* [Qemu-devel] [PATCH 03/21] linux-user: implemented ELF coredump support for ARM target
2009-06-12 13:50 [Qemu-devel] [PATCH 00/21] Pending linux-user patches riku.voipio
2009-06-12 13:50 ` [Qemu-devel] [PATCH 01/21] export mmap_find_vma for shmat riku.voipio
2009-06-12 13:50 ` [Qemu-devel] [PATCH 02/21] Implement shm* syscalls and fix 64/32bit errors riku.voipio
@ 2009-06-12 13:50 ` riku.voipio
2009-06-14 15:16 ` Blue Swirl
2009-06-12 13:50 ` [Qemu-devel] [PATCH 04/21] linux-user: added x86 and x86_64 support for ELF coredump riku.voipio
` (18 subsequent siblings)
21 siblings, 1 reply; 40+ messages in thread
From: riku.voipio @ 2009-06-12 13:50 UTC (permalink / raw)
To: qemu-devel
From: Mika Westerberg <mika.westerberg@iki.fi>
When target process is killed with signal (such signal that
should dump core) a coredump file is created. This file is
similar than coredump generated by Linux (there are few exceptions
though).
Riku Voipio: added support for rlimit
From: Mika Westerberg <mika.westerberg@iki.fi>
Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
---
cpu-all.h | 2 +
elf.h | 19 +-
exec.c | 69 +++--
linux-user/elfload.c | 928 +++++++++++++++++++++++++++++++++++++++++++++++-
linux-user/linuxload.c | 50 ++--
linux-user/main.c | 42 ++-
linux-user/qemu.h | 13 +-
linux-user/signal.c | 40 ++-
linux-user/syscall.c | 6 +
9 files changed, 1101 insertions(+), 68 deletions(-)
diff --git a/cpu-all.h b/cpu-all.h
index dc9b034..8f078c4 100644
--- a/cpu-all.h
+++ b/cpu-all.h
@@ -735,6 +735,8 @@ extern unsigned long qemu_host_page_mask;
#define PAGE_RESERVED 0x0020
void page_dump(FILE *f);
+int walk_memory_regions(void *,
+ int (*fn)(void *, unsigned long, unsigned long, unsigned long));
int page_get_flags(target_ulong address);
void page_set_flags(target_ulong start, target_ulong end, int flags);
int page_check_range(target_ulong start, target_ulong len, int flags);
diff --git a/elf.h b/elf.h
index 182cad9..f8dea7c 100644
--- a/elf.h
+++ b/elf.h
@@ -1081,7 +1081,23 @@ typedef struct elf64_shdr {
#define EI_CLASS 4
#define EI_DATA 5
#define EI_VERSION 6
-#define EI_PAD 7
+#define EI_OSABI 7
+#define EI_PAD 8
+
+#define ELFOSABI_NONE 0 /* UNIX System V ABI */
+#define ELFOSABI_SYSV 0 /* Alias. */
+#define ELFOSABI_HPUX 1 /* HP-UX */
+#define ELFOSABI_NETBSD 2 /* NetBSD. */
+#define ELFOSABI_LINUX 3 /* Linux. */
+#define ELFOSABI_SOLARIS 6 /* Sun Solaris. */
+#define ELFOSABI_AIX 7 /* IBM AIX. */
+#define ELFOSABI_IRIX 8 /* SGI Irix. */
+#define ELFOSABI_FREEBSD 9 /* FreeBSD. */
+#define ELFOSABI_TRU64 10 /* Compaq TRU64 UNIX. */
+#define ELFOSABI_MODESTO 11 /* Novell Modesto. */
+#define ELFOSABI_OPENBSD 12 /* OpenBSD. */
+#define ELFOSABI_ARM 97 /* ARM */
+#define ELFOSABI_STANDALONE 255 /* Standalone (embedded) application */
#define ELFMAG0 0x7f /* EI_MAG */
#define ELFMAG1 'E'
@@ -1108,6 +1124,7 @@ typedef struct elf64_shdr {
#define NT_PRFPREG 2
#define NT_PRPSINFO 3
#define NT_TASKSTRUCT 4
+#define NT_AUXV 6
#define NT_PRXFPREG 0x46e62b7f /* copied from gdb5.1/include/elf/common.h */
diff --git a/exec.c b/exec.c
index 52f4e89..9e7d66a 100644
--- a/exec.c
+++ b/exec.c
@@ -2131,36 +2131,36 @@ int tlb_set_page_exec(CPUState *env, target_ulong vaddr,
return 0;
}
-/* dump memory mappings */
-void page_dump(FILE *f)
+/*
+ * Walks guest process memory "regions" one by one
+ * and calls callback function 'fn' for each region.
+ */
+int walk_memory_regions(void *priv,
+ int (*fn)(void *, unsigned long, unsigned long, unsigned long))
{
unsigned long start, end;
+ PageDesc *p = NULL;
int i, j, prot, prot1;
- PageDesc *p;
+ int rc = 0;
- fprintf(f, "%-8s %-8s %-8s %s\n",
- "start", "end", "size", "prot");
- start = -1;
- end = -1;
+ start = end = -1;
prot = 0;
- for(i = 0; i <= L1_SIZE; i++) {
- if (i < L1_SIZE)
- p = l1_map[i];
- else
- p = NULL;
- for(j = 0;j < L2_SIZE; j++) {
- if (!p)
- prot1 = 0;
- else
- prot1 = p[j].flags;
+
+ for (i = 0; i <= L1_SIZE; i++) {
+ p = (i < L1_SIZE) ? l1_map[i] : NULL;
+ for (j = 0; j < L2_SIZE; j++) {
+ prot1 = (p == NULL) ? 0 : p[j].flags;
+ /*
+ * "region" is one continuous chunk of memory
+ * that has same protection flags set.
+ */
if (prot1 != prot) {
end = (i << (32 - L1_BITS)) | (j << TARGET_PAGE_BITS);
if (start != -1) {
- fprintf(f, "%08lx-%08lx %08lx %c%c%c\n",
- start, end, end - start,
- prot & PAGE_READ ? 'r' : '-',
- prot & PAGE_WRITE ? 'w' : '-',
- prot & PAGE_EXEC ? 'x' : '-');
+ rc = (*fn)(priv, start, end, prot);
+ /* callback can stop iteration by returning != 0 */
+ if (rc != 0)
+ return (rc);
}
if (prot1 != 0)
start = end;
@@ -2168,10 +2168,33 @@ void page_dump(FILE *f)
start = -1;
prot = prot1;
}
- if (!p)
+ if (p == NULL)
break;
}
}
+ return (rc);
+}
+
+static int dump_region(void *priv, unsigned long start,
+ unsigned long end, unsigned long prot)
+{
+ FILE *f = (FILE *)priv;
+
+ (void) fprintf(f, "%08lx-%08lx %08lx %c%c%c\n",
+ start, end, end - start,
+ ((prot & PAGE_READ) ? 'r' : '-'),
+ ((prot & PAGE_WRITE) ? 'w' : '-'),
+ ((prot & PAGE_EXEC) ? 'x' : '-'));
+
+ return (0);
+}
+
+/* dump memory mappings */
+void page_dump(FILE *f)
+{
+ (void) fprintf(f, "%-8s %-8s %-8s %s\n",
+ "start", "end", "size", "prot");
+ walk_memory_regions(f, dump_region);
}
int page_get_flags(target_ulong address)
diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index 190ad14..c9e8bc1 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -1,4 +1,6 @@
/* This is the Linux kernel elf-loading code, ported into user space */
+#include <sys/time.h>
+#include <sys/param.h>
#include <stdio.h>
#include <sys/types.h>
@@ -6,8 +8,10 @@
#include <errno.h>
#include <unistd.h>
#include <sys/mman.h>
+#include <sys/resource.h>
#include <stdlib.h>
#include <string.h>
+#include <time.h>
#include "qemu.h"
#include "disas.h"
@@ -21,6 +25,8 @@
#undef ELF_ARCH
#endif
+#define ELF_OSABI ELFOSABI_SYSV
+
/* from personality.h */
/*
@@ -160,7 +166,6 @@ static inline void init_thread(struct target_pt_regs *regs, struct image_info *i
}
#endif
-#define USE_ELF_CORE_DUMP
#define ELF_EXEC_PAGESIZE 4096
#endif
@@ -198,6 +203,37 @@ static inline void init_thread(struct target_pt_regs *regs, struct image_info *i
regs->ARM_r10 = infop->start_data;
}
+typedef uint32_t elf_greg_t;
+typedef uint16_t target_uid_t;
+typedef uint16_t target_gid_t;
+typedef int32_t target_pid_t;
+
+#define ELF_NREG 18
+typedef elf_greg_t elf_gregset_t[ELF_NREG];
+
+static void elf_core_copy_regs(elf_gregset_t *regs, const CPUState *env)
+{
+ (*regs)[0] = env->regs[0];
+ (*regs)[1] = env->regs[1];
+ (*regs)[2] = env->regs[2];
+ (*regs)[3] = env->regs[3];
+ (*regs)[4] = env->regs[4];
+ (*regs)[5] = env->regs[5];
+ (*regs)[6] = env->regs[6];
+ (*regs)[7] = env->regs[7];
+ (*regs)[8] = env->regs[8];
+ (*regs)[9] = env->regs[9];
+ (*regs)[10] = env->regs[10];
+ (*regs)[11] = env->regs[11];
+ (*regs)[12] = env->regs[12];
+ (*regs)[13] = env->regs[13];
+ (*regs)[14] = env->regs[14];
+ (*regs)[15] = env->regs[15];
+
+ (*regs)[16] = cpsr_read((CPUState *)env);
+ (*regs)[17] = env->regs[0]; /* XXX */
+}
+
#define USE_ELF_CORE_DUMP
#define ELF_EXEC_PAGESIZE 4096
@@ -418,7 +454,6 @@ static inline void init_thread(struct target_pt_regs *_regs, struct image_info *
_regs->gpr[5] = pos;
}
-#define USE_ELF_CORE_DUMP
#define ELF_EXEC_PAGESIZE 4096
#endif
@@ -448,7 +483,6 @@ static inline void init_thread(struct target_pt_regs *regs, struct image_info *i
regs->regs[29] = infop->start_stack;
}
-#define USE_ELF_CORE_DUMP
#define ELF_EXEC_PAGESIZE 4096
#endif /* TARGET_MIPS */
@@ -470,7 +504,6 @@ static inline void init_thread(struct target_pt_regs *regs, struct image_info *i
}
-#define USE_ELF_CORE_DUMP
#define ELF_EXEC_PAGESIZE 4096
#endif /* TARGET_MICROBLAZE */
@@ -492,7 +525,6 @@ static inline void init_thread(struct target_pt_regs *regs, struct image_info *i
regs->regs[15] = infop->start_stack;
}
-#define USE_ELF_CORE_DUMP
#define ELF_EXEC_PAGESIZE 4096
#endif
@@ -512,7 +544,6 @@ static inline void init_thread(struct target_pt_regs *regs, struct image_info *i
regs->erp = infop->entry;
}
-#define USE_ELF_CORE_DUMP
#define ELF_EXEC_PAGESIZE 8192
#endif
@@ -537,7 +568,6 @@ static inline void init_thread(struct target_pt_regs *regs, struct image_info *i
regs->pc = infop->entry;
}
-#define USE_ELF_CORE_DUMP
#define ELF_EXEC_PAGESIZE 8192
#endif
@@ -562,7 +592,6 @@ static inline void init_thread(struct target_pt_regs *regs, struct image_info *i
regs->unique, infop->start_data);
}
-#define USE_ELF_CORE_DUMP
#define ELF_EXEC_PAGESIZE 8192
#endif /* TARGET_ALPHA */
@@ -680,6 +709,20 @@ static void bswap_sym(struct elf_sym *sym)
}
#endif
+#ifdef USE_ELF_CORE_DUMP
+static int elf_core_dump(int, const CPUState *);
+
+#ifdef BSWAP_NEEDED
+static void bswap_note(struct elf_note *en)
+{
+ bswaptls(&en->n_namesz);
+ bswaptls(&en->n_descsz);
+ bswaptls(&en->n_type);
+}
+#endif /* BSWAP_NEEDED */
+
+#endif /* USE_ELF_CORE_DUMP */
+
/*
* 'copy_elf_strings()' copies argument/envelope strings from user
* memory to free pages in kernel mem. These are in a format ready
@@ -904,6 +947,8 @@ static abi_ulong create_elf_tables(abi_ulong p, int argc, int envc,
#endif
#undef NEW_AUX_ENT
+ info->saved_auxv = sp;
+
sp = loader_build_argptr(envc, argc, sp, p, !ibcs);
return sp;
}
@@ -1586,9 +1631,876 @@ int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
info->entry = elf_entry;
+#ifdef USE_ELF_CORE_DUMP
+ bprm->core_dump = &elf_core_dump;
+#endif
+
return 0;
}
+#ifdef USE_ELF_CORE_DUMP
+
+/*
+ * Definitions to generate Intel SVR4-like core files.
+ * These mostly have the same names as the SVR4 types with "elf_"
+ * tacked on the front to prevent clashes with linux definitions,
+ * and the typedef forms have been avoided. This is mostly like
+ * the SVR4 structure, but more Linuxy, with things that Linux does
+ * not support and which gdb doesn't really use excluded.
+ *
+ * Fields we don't dump (their contents is zero) in linux-user qemu
+ * are marked with XXX.
+ *
+ * Core dump code is copied from linux kernel (fs/binfmt_elf.c).
+ *
+ * Porting ELF coredump for target is (quite) simple process. First you
+ * define ELF_USE_CORE_DUMP in target ELF code (where init_thread() for
+ * the target resides):
+ *
+ * #define USE_ELF_CORE_DUMP
+ *
+ * Next you define type of register set used for dumping. ELF specification
+ * says that it needs to be array of elf_greg_t that has size of ELF_NREG.
+ *
+ * typedef <target_regtype> elf_greg_t;
+ * #define ELF_NREG <number of registers>
+ * typedef elf_greg_t elf_gregset_t[ELF_NREG];
+ *
+ * Then define following types to match target types. Actual types can
+ * be found from linux kernel (arch/<ARCH>/include/asm/posix_types.h):
+ *
+ * typedef <target_uid_type> target_uid_t;
+ * typedef <target_gid_type> target_gid_t;
+ * typedef <target_pid_type> target_pid_t;
+ *
+ * Last step is to implement target specific function that copies registers
+ * from given cpu into just specified register set. Prototype is:
+ *
+ * static void elf_core_copy_regs(elf_gregset_t *regs, const CPUState *env);
+ *
+ * Parameters:
+ * regs - copy register values into here (allocated and zeroed by caller)
+ * env - copy registers from here
+ *
+ * Example for ARM target is provided in this file.
+ */
+
+/* An ELF note in memory */
+struct memelfnote {
+ const char *name;
+ size_t namesz;
+ size_t namesz_rounded;
+ int type;
+ size_t datasz;
+ void *data;
+ size_t notesz;
+};
+
+struct elf_siginfo {
+ int si_signo; /* signal number */
+ int si_code; /* extra code */
+ int si_errno; /* errno */
+};
+
+struct elf_prstatus {
+ struct elf_siginfo pr_info; /* Info associated with signal */
+ short pr_cursig; /* Current signal */
+ target_ulong pr_sigpend; /* XXX */
+ target_ulong pr_sighold; /* XXX */
+ target_pid_t pr_pid;
+ target_pid_t pr_ppid;
+ target_pid_t pr_pgrp;
+ target_pid_t pr_sid;
+ struct target_timeval pr_utime; /* XXX User time */
+ struct target_timeval pr_stime; /* XXX System time */
+ struct target_timeval pr_cutime; /* XXX Cumulative user time */
+ struct target_timeval pr_cstime; /* XXX Cumulative system time */
+ elf_gregset_t pr_reg; /* GP registers */
+ int pr_fpvalid; /* XXX */
+};
+
+#define ELF_PRARGSZ (80) /* Number of chars for args */
+
+struct elf_prpsinfo {
+ char pr_state; /* numeric process state */
+ char pr_sname; /* char for pr_state */
+ char pr_zomb; /* zombie */
+ char pr_nice; /* nice val */
+ target_ulong pr_flag; /* flags */
+ target_uid_t pr_uid;
+ target_gid_t pr_gid;
+ target_pid_t pr_pid, pr_ppid, pr_pgrp, pr_sid;
+ /* Lots missing */
+ char pr_fname[16]; /* filename of executable */
+ char pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */
+};
+
+/* Here is the structure in which status of each thread is captured. */
+struct elf_thread_status {
+ TAILQ_ENTRY(elf_thread_status) ets_link;
+ struct elf_prstatus prstatus; /* NT_PRSTATUS */
+#if 0
+ elf_fpregset_t fpu; /* NT_PRFPREG */
+ struct task_struct *thread;
+ elf_fpxregset_t xfpu; /* ELF_CORE_XFPREG_TYPE */
+#endif
+ struct memelfnote notes[1];
+ int num_notes;
+};
+
+struct elf_note_info {
+ struct memelfnote *notes;
+ struct elf_prstatus *prstatus; /* NT_PRSTATUS */
+ struct elf_prpsinfo *psinfo; /* NT_PRPSINFO */
+
+ TAILQ_HEAD(thread_list_head, elf_thread_status) thread_list;
+#if 0
+ /*
+ * Current version of ELF coredump doesn't support
+ * dumping fp regs etc.
+ */
+ elf_fpregset_t *fpu;
+ elf_fpxregset_t *xfpu;
+ int thread_status_size;
+#endif
+ int notes_size;
+ int numnote;
+};
+
+struct vm_area_struct {
+ abi_ulong vma_start; /* start vaddr of memory region */
+ abi_ulong vma_end; /* end vaddr of memory region */
+ abi_ulong vma_flags; /* protection etc. flags for the region */
+ TAILQ_ENTRY(vm_area_struct) vma_link;
+};
+
+struct mm_struct {
+ TAILQ_HEAD(, vm_area_struct) mm_mmap;
+ int mm_count; /* number of mappings */
+};
+
+static struct mm_struct *vma_init(void);
+static void vma_delete(struct mm_struct *);
+static int vma_add_mapping(struct mm_struct *, abi_ulong,
+ abi_ulong, abi_ulong);
+static int vma_get_mapping_count(const struct mm_struct *);
+static struct vm_area_struct *vma_first(const struct mm_struct *);
+static struct vm_area_struct *vma_next(struct vm_area_struct *);
+static abi_ulong vma_dump_size(const struct vm_area_struct *);
+static int vma_walker(void *priv, unsigned long start, unsigned long end,
+ unsigned long flags);
+
+static void fill_elf_header(struct elfhdr *, int, uint16_t, uint32_t);
+static void fill_note(struct memelfnote *, const char *, int,
+ unsigned int, void *);
+static void fill_prstatus(struct elf_prstatus *, const TaskState *, int);
+static int fill_psinfo(struct elf_prpsinfo *, const TaskState *);
+static void fill_auxv_note(struct memelfnote *, const TaskState *);
+static void fill_elf_note_phdr(struct elf_phdr *, int, off_t);
+static size_t note_size(const struct memelfnote *);
+static void free_note_info(struct elf_note_info *);
+static int fill_note_info(struct elf_note_info *, long, const CPUState *);
+static void fill_thread_info(struct elf_note_info *, const CPUState *);
+static int core_dump_filename(const TaskState *, char *, size_t);
+
+static int dump_write(int, const void *, size_t);
+static int write_note(struct memelfnote *, int);
+static int write_note_info(struct elf_note_info *, int);
+
+#ifdef BSWAP_NEEDED
+static void bswap_prstatus(struct elf_prstatus *);
+static void bswap_psinfo(struct elf_prpsinfo *);
+
+static void bswap_prstatus(struct elf_prstatus *prstatus)
+{
+ prstatus->pr_info.si_signo = tswapl(prstatus->pr_info.si_signo);
+ prstatus->pr_info.si_code = tswapl(prstatus->pr_info.si_code);
+ prstatus->pr_info.si_errno = tswapl(prstatus->pr_info.si_errno);
+ prstatus->pr_cursig = tswap16(prstatus->pr_cursig);
+ prstatus->pr_sigpend = tswapl(prstatus->pr_sigpend);
+ prstatus->pr_sighold = tswapl(prstatus->pr_sighold);
+ prstatus->pr_pid = tswap32(prstatus->pr_pid);
+ prstatus->pr_ppid = tswap32(prstatus->pr_ppid);
+ prstatus->pr_pgrp = tswap32(prstatus->pr_pgrp);
+ prstatus->pr_sid = tswap32(prstatus->pr_sid);
+ /* cpu times are not filled, so we skip them */
+ /* regs should be in correct format already */
+ prstatus->pr_fpvalid = tswap32(prstatus->pr_fpvalid);
+}
+
+static void bswap_psinfo(struct elf_prpsinfo *psinfo)
+{
+ psinfo->pr_flag = tswapl(psinfo->pr_flag);
+ psinfo->pr_uid = tswap16(psinfo->pr_uid);
+ psinfo->pr_gid = tswap16(psinfo->pr_gid);
+ psinfo->pr_pid = tswap32(psinfo->pr_pid);
+ psinfo->pr_ppid = tswap32(psinfo->pr_ppid);
+ psinfo->pr_pgrp = tswap32(psinfo->pr_pgrp);
+ psinfo->pr_sid = tswap32(psinfo->pr_sid);
+}
+#endif /* BSWAP_NEEDED */
+
+/*
+ * Minimal support for linux memory regions. These are needed
+ * when we are finding out what memory exactly belongs to
+ * emulated process. No locks needed here, as long as
+ * thread that received the signal is stopped.
+ */
+
+static struct mm_struct *vma_init(void)
+{
+ struct mm_struct *mm;
+
+ if ((mm = qemu_malloc(sizeof (*mm))) == NULL)
+ return (NULL);
+
+ mm->mm_count = 0;
+ TAILQ_INIT(&mm->mm_mmap);
+
+ return (mm);
+}
+
+static void vma_delete(struct mm_struct *mm)
+{
+ struct vm_area_struct *vma;
+
+ while ((vma = vma_first(mm)) != NULL) {
+ TAILQ_REMOVE(&mm->mm_mmap, vma, vma_link);
+ qemu_free(vma);
+ }
+ qemu_free(mm);
+}
+
+static int vma_add_mapping(struct mm_struct *mm, abi_ulong start,
+ abi_ulong end, abi_ulong flags)
+{
+ struct vm_area_struct *vma;
+
+ if ((vma = qemu_mallocz(sizeof (*vma))) == NULL)
+ return (-1);
+
+ vma->vma_start = start;
+ vma->vma_end = end;
+ vma->vma_flags = flags;
+
+ TAILQ_INSERT_TAIL(&mm->mm_mmap, vma, vma_link);
+ mm->mm_count++;
+
+ return (0);
+}
+
+static struct vm_area_struct *vma_first(const struct mm_struct *mm)
+{
+ return (TAILQ_FIRST(&mm->mm_mmap));
+}
+
+static struct vm_area_struct *vma_next(struct vm_area_struct *vma)
+{
+ return (TAILQ_NEXT(vma, vma_link));
+}
+
+static int vma_get_mapping_count(const struct mm_struct *mm)
+{
+ return (mm->mm_count);
+}
+
+/*
+ * Calculate file (dump) size of given memory region.
+ */
+static abi_ulong vma_dump_size(const struct vm_area_struct *vma)
+{
+ /* if we cannot even read the first page, skip it */
+ if (!access_ok(VERIFY_READ, vma->vma_start, TARGET_PAGE_SIZE))
+ return (0);
+
+ /*
+ * Usually we don't dump executable pages as they contain
+ * non-writable code that debugger can read directly from
+ * target library etc. However, thread stacks are marked
+ * also executable so we read in first page of given region
+ * and check whether it contains elf header. If there is
+ * no elf header, we dump it.
+ */
+ if (vma->vma_flags & PROT_EXEC) {
+ char page[TARGET_PAGE_SIZE];
+
+ copy_from_user(page, vma->vma_start, sizeof (page));
+ if ((page[EI_MAG0] == ELFMAG0) &&
+ (page[EI_MAG1] == ELFMAG1) &&
+ (page[EI_MAG2] == ELFMAG2) &&
+ (page[EI_MAG3] == ELFMAG3)) {
+ /*
+ * Mappings are possibly from ELF binary. Don't dump
+ * them.
+ */
+ return (0);
+ }
+ }
+
+ return (vma->vma_end - vma->vma_start);
+}
+
+static int vma_walker(void *priv, unsigned long start, unsigned long end,
+ unsigned long flags)
+{
+ struct mm_struct *mm = (struct mm_struct *)priv;
+
+ /*
+ * Don't dump anything that qemu has reserved for internal use.
+ */
+ if (flags & PAGE_RESERVED)
+ return (0);
+
+ vma_add_mapping(mm, start, end, flags);
+ return (0);
+}
+
+static void fill_note(struct memelfnote *note, const char *name, int type,
+ unsigned int sz, void *data)
+{
+ unsigned int namesz;
+
+ namesz = strlen(name) + 1;
+ note->name = name;
+ note->namesz = namesz;
+ note->namesz_rounded = roundup(namesz, sizeof (int32_t));
+ note->type = type;
+ note->datasz = roundup(sz, sizeof (int32_t));;
+ note->data = data;
+
+ /*
+ * We calculate rounded up note size here as specified by
+ * ELF document.
+ */
+ note->notesz = sizeof (struct elf_note) +
+ note->namesz_rounded + note->datasz;
+}
+
+static void fill_elf_header(struct elfhdr *elf, int segs, uint16_t machine,
+ uint32_t flags)
+{
+ (void) memset(elf, 0, sizeof(*elf));
+
+ (void) memcpy(elf->e_ident, ELFMAG, SELFMAG);
+ elf->e_ident[EI_CLASS] = ELF_CLASS;
+ elf->e_ident[EI_DATA] = ELF_DATA;
+ elf->e_ident[EI_VERSION] = EV_CURRENT;
+ elf->e_ident[EI_OSABI] = ELF_OSABI;
+
+ elf->e_type = ET_CORE;
+ elf->e_machine = machine;
+ elf->e_version = EV_CURRENT;
+ elf->e_phoff = sizeof(struct elfhdr);
+ elf->e_flags = flags;
+ elf->e_ehsize = sizeof(struct elfhdr);
+ elf->e_phentsize = sizeof(struct elf_phdr);
+ elf->e_phnum = segs;
+
+#ifdef BSWAP_NEEDED
+ bswap_ehdr(elf);
+#endif
+}
+
+static void fill_elf_note_phdr(struct elf_phdr *phdr, int sz, off_t offset)
+{
+ phdr->p_type = PT_NOTE;
+ phdr->p_offset = offset;
+ phdr->p_vaddr = 0;
+ phdr->p_paddr = 0;
+ phdr->p_filesz = sz;
+ phdr->p_memsz = 0;
+ phdr->p_flags = 0;
+ phdr->p_align = 0;
+
+#ifdef BSWAP_NEEDED
+ bswap_phdr(phdr);
+#endif
+}
+
+static size_t note_size(const struct memelfnote *note)
+{
+ return (note->notesz);
+}
+
+static void fill_prstatus(struct elf_prstatus *prstatus,
+ const TaskState *ts, int signr)
+{
+ (void) memset(prstatus, 0, sizeof (*prstatus));
+ prstatus->pr_info.si_signo = prstatus->pr_cursig = signr;
+ prstatus->pr_pid = ts->ts_tid;
+ prstatus->pr_ppid = getppid();
+ prstatus->pr_pgrp = getpgrp();
+ prstatus->pr_sid = getsid(0);
+
+#ifdef BSWAP_NEEDED
+ bswap_prstatus(prstatus);
+#endif
+}
+
+static int fill_psinfo(struct elf_prpsinfo *psinfo, const TaskState *ts)
+{
+ char *filename, *base_filename;
+ unsigned int i, len;
+
+ (void) memset(psinfo, 0, sizeof (*psinfo));
+
+ len = ts->info->arg_end - ts->info->arg_start;
+ if (len >= ELF_PRARGSZ)
+ len = ELF_PRARGSZ - 1;
+ if (copy_from_user(&psinfo->pr_psargs, ts->info->arg_start, len))
+ return -EFAULT;
+ for (i = 0; i < len; i++)
+ if (psinfo->pr_psargs[i] == 0)
+ psinfo->pr_psargs[i] = ' ';
+ psinfo->pr_psargs[len] = 0;
+
+ psinfo->pr_pid = getpid();
+ psinfo->pr_ppid = getppid();
+ psinfo->pr_pgrp = getpgrp();
+ psinfo->pr_sid = getsid(0);
+ psinfo->pr_uid = getuid();
+ psinfo->pr_gid = getgid();
+
+ filename = strdup(ts->bprm->filename);
+ base_filename = strdup(basename(filename));
+ (void) strncpy(psinfo->pr_fname, base_filename,
+ sizeof(psinfo->pr_fname));
+ free(base_filename);
+ free(filename);
+
+#ifdef BSWAP_NEEDED
+ bswap_psinfo(psinfo);
+#endif
+ return (0);
+}
+
+static void fill_auxv_note(struct memelfnote *note, const TaskState *ts)
+{
+ elf_addr_t auxv = (elf_addr_t)ts->info->saved_auxv;
+ elf_addr_t orig_auxv = auxv;
+ abi_ulong val;
+ void *ptr;
+ int i, len;
+
+ /*
+ * Auxiliary vector is stored in target process stack. It contains
+ * {type, value} pairs that we need to dump into note. This is not
+ * strictly necessary but we do it here for sake of completeness.
+ */
+
+ /* find out lenght of the vector, AT_NULL is terminator */
+ i = len = 0;
+ do {
+ get_user_ual(val, auxv);
+ i += 2;
+ auxv += 2 * sizeof (elf_addr_t);
+ } while (val != AT_NULL);
+ len = i * sizeof (elf_addr_t);
+
+ /* read in whole auxv vector and copy it to memelfnote */
+ ptr = lock_user(VERIFY_READ, orig_auxv, len, 0);
+ if (ptr != NULL) {
+ fill_note(note, "CORE", NT_AUXV, len, ptr);
+ unlock_user(ptr, auxv, len);
+ }
+}
+
+/*
+ * Constructs name of coredump file. We have following convention
+ * for the name:
+ * qemu_<basename-of-target-binary>_<date>-<time>_<pid>.core
+ *
+ * Returns 0 in case of success, -1 otherwise (errno is set).
+ */
+static int core_dump_filename(const TaskState *ts, char *buf,
+ size_t bufsize)
+{
+ char timestamp[64];
+ char *filename = NULL;
+ char *base_filename = NULL;
+ struct timeval tv;
+ struct tm tm;
+
+ assert(bufsize >= PATH_MAX);
+
+ if (gettimeofday(&tv, NULL) < 0) {
+ (void) fprintf(stderr, "unable to get current timestamp: %s",
+ strerror(errno));
+ return (-1);
+ }
+
+ filename = strdup(ts->bprm->filename);
+ base_filename = strdup(basename(filename));
+ (void) strftime(timestamp, sizeof (timestamp), "%Y%m%d-%H%M%S",
+ localtime_r(&tv.tv_sec, &tm));
+ (void) snprintf(buf, bufsize, "qemu_%s_%s_%d.core",
+ base_filename, timestamp, (int)getpid());
+ free(base_filename);
+ free(filename);
+
+ return (0);
+}
+
+static int dump_write(int fd, const void *ptr, size_t size)
+{
+ const char *bufp = (const char *)ptr;
+ ssize_t bytes_written, bytes_left;
+ struct rlimit dumpsize;
+ off_t pos;
+
+ bytes_written = 0;
+ getrlimit(RLIMIT_CORE, &dumpsize);
+ if ((pos = lseek(fd, 0, SEEK_CUR))==-1) {
+ if (errno == ESPIPE) { /* not a seekable stream */
+ bytes_left = size;
+ } else {
+ return pos;
+ }
+ } else {
+ if (dumpsize.rlim_cur <= pos) {
+ return -1;
+ } else if (dumpsize.rlim_cur == RLIM_INFINITY) {
+ bytes_left = size;
+ } else {
+ size_t limit_left=dumpsize.rlim_cur - pos;
+ bytes_left = limit_left >= size ? size : limit_left ;
+ }
+ }
+
+ /*
+ * In normal conditions, single write(2) should do but
+ * in case of socket etc. this mechanism is more portable.
+ */
+ do {
+ bytes_written = write(fd, bufp, bytes_left);
+ if (bytes_written < 0) {
+ if (errno == EINTR)
+ continue;
+ return (-1);
+ } else if (bytes_written == 0) { /* eof */
+ return (-1);
+ }
+ bufp += bytes_written;
+ bytes_left -= bytes_written;
+ } while (bytes_left > 0);
+
+ return (0);
+}
+
+static int write_note(struct memelfnote *men, int fd)
+{
+ struct elf_note en;
+
+ en.n_namesz = men->namesz;
+ en.n_type = men->type;
+ en.n_descsz = men->datasz;
+
+#ifdef BSWAP_NEEDED
+ bswap_note(&en);
+#endif
+
+ if (dump_write(fd, &en, sizeof(en)) != 0)
+ return (-1);
+ if (dump_write(fd, men->name, men->namesz_rounded) != 0)
+ return (-1);
+ if (dump_write(fd, men->data, men->datasz) != 0)
+ return (-1);
+
+ return (0);
+}
+
+static void fill_thread_info(struct elf_note_info *info, const CPUState *env)
+{
+ TaskState *ts = (TaskState *)env->opaque;
+ struct elf_thread_status *ets;
+
+ ets = qemu_mallocz(sizeof (*ets));
+ ets->num_notes = 1; /* only prstatus is dumped */
+ fill_prstatus(&ets->prstatus, ts, 0);
+ elf_core_copy_regs(&ets->prstatus.pr_reg, env);
+ fill_note(&ets->notes[0], "CORE", NT_PRSTATUS, sizeof (ets->prstatus),
+ &ets->prstatus);
+
+ TAILQ_INSERT_TAIL(&info->thread_list, ets, ets_link);
+
+ info->notes_size += note_size(&ets->notes[0]);
+}
+
+static int fill_note_info(struct elf_note_info *info,
+ long signr, const CPUState *env)
+{
+#define NUMNOTES 3
+ CPUState *cpu = NULL;
+ TaskState *ts = (TaskState *)env->opaque;
+ int i;
+
+ (void) memset(info, 0, sizeof (*info));
+
+ TAILQ_INIT(&info->thread_list);
+
+ info->notes = qemu_mallocz(NUMNOTES * sizeof (struct memelfnote));
+ if (info->notes == NULL)
+ return (-ENOMEM);
+ info->prstatus = qemu_mallocz(sizeof (*info->prstatus));
+ if (info->prstatus == NULL)
+ return (-ENOMEM);
+ info->psinfo = qemu_mallocz(sizeof (*info->psinfo));
+ if (info->prstatus == NULL)
+ return (-ENOMEM);
+
+ /*
+ * First fill in status (and registers) of current thread
+ * including process info & aux vector.
+ */
+ fill_prstatus(info->prstatus, ts, signr);
+ elf_core_copy_regs(&info->prstatus->pr_reg, env);
+ fill_note(&info->notes[0], "CORE", NT_PRSTATUS,
+ sizeof (*info->prstatus), info->prstatus);
+ fill_psinfo(info->psinfo, ts);
+ fill_note(&info->notes[1], "CORE", NT_PRPSINFO,
+ sizeof (*info->psinfo), info->psinfo);
+ fill_auxv_note(&info->notes[2], ts);
+ info->numnote = 3;
+
+ info->notes_size = 0;
+ for (i = 0; i < info->numnote; i++)
+ info->notes_size += note_size(&info->notes[i]);
+
+ /* read and fill status of all threads */
+ cpu_list_lock();
+ for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) {
+ if (cpu == thread_env)
+ continue;
+ fill_thread_info(info, cpu);
+ }
+ cpu_list_unlock();
+
+ return (0);
+}
+
+static void free_note_info(struct elf_note_info *info)
+{
+ struct elf_thread_status *ets;
+
+ while (!TAILQ_EMPTY(&info->thread_list)) {
+ ets = TAILQ_FIRST(&info->thread_list);
+ TAILQ_REMOVE(&info->thread_list, ets, ets_link);
+ qemu_free(ets);
+ }
+
+ qemu_free(info->prstatus);
+ qemu_free(info->psinfo);
+ qemu_free(info->notes);
+}
+
+static int write_note_info(struct elf_note_info *info, int fd)
+{
+ struct elf_thread_status *ets;
+ int i, error = 0;
+
+ /* write prstatus, psinfo and auxv for current thread */
+ for (i = 0; i < info->numnote; i++)
+ if ((error = write_note(&info->notes[i], fd)) != 0)
+ return (error);
+
+ /* write prstatus for each thread */
+ for (ets = info->thread_list.tqh_first; ets != NULL;
+ ets = ets->ets_link.tqe_next) {
+ if ((error = write_note(&ets->notes[0], fd)) != 0)
+ return (error);
+ }
+
+ return (0);
+}
+
+/*
+ * Write out ELF coredump.
+ *
+ * See documentation of ELF object file format in:
+ * http://www.caldera.com/developers/devspecs/gabi41.pdf
+ *
+ * Coredump format in linux is following:
+ *
+ * 0 +----------------------+ \
+ * | ELF header | ET_CORE |
+ * +----------------------+ |
+ * | ELF program headers | |--- headers
+ * | - NOTE section | |
+ * | - PT_LOAD sections | |
+ * +----------------------+ /
+ * | NOTEs: |
+ * | - NT_PRSTATUS |
+ * | - NT_PRSINFO |
+ * | - NT_AUXV |
+ * +----------------------+ <-- aligned to target page
+ * | Process memory dump |
+ * : :
+ * . .
+ * : :
+ * | |
+ * +----------------------+
+ *
+ * NT_PRSTATUS -> struct elf_prstatus (per thread)
+ * NT_PRSINFO -> struct elf_prpsinfo
+ * NT_AUXV is array of { type, value } pairs (see fill_auxv_note()).
+ *
+ * Format follows System V format as close as possible. Current
+ * version limitations are as follows:
+ * - no floating point registers are dumped
+ *
+ * Function returns 0 in case of success, negative errno otherwise.
+ *
+ * TODO: make this work also during runtime: it should be
+ * possible to force coredump from running process and then
+ * continue processing. For example qemu could set up SIGUSR2
+ * handler (provided that target process haven't registered
+ * handler for that) that does the dump when signal is received.
+ */
+static int elf_core_dump(int signr, const CPUState *env)
+{
+ const TaskState *ts = (const TaskState *)env->opaque;
+ struct vm_area_struct *vma = NULL;
+ char corefile[PATH_MAX];
+ struct elf_note_info info;
+ struct elfhdr elf;
+ struct elf_phdr phdr;
+ struct rlimit dumpsize;
+ struct mm_struct *mm = NULL;
+ off_t offset = 0, data_offset = 0;
+ int segs = 0;
+ int fd = -1;
+
+ errno = 0;
+ getrlimit(RLIMIT_CORE, &dumpsize);
+ if (dumpsize.rlim_cur == 0)
+ return 0;
+
+ if (core_dump_filename(ts, corefile, sizeof (corefile)) < 0)
+ return (-errno);
+
+ if ((fd = open(corefile, O_WRONLY | O_CREAT,
+ S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH)) < 0)
+ return (-errno);
+
+ /*
+ * Walk through target process memory mappings and
+ * set up structure containing this information. After
+ * this point vma_xxx functions can be used.
+ */
+ if ((mm = vma_init()) == NULL)
+ goto out;
+
+ walk_memory_regions(mm, vma_walker);
+ segs = vma_get_mapping_count(mm);
+
+ /*
+ * Construct valid coredump ELF header. We also
+ * add one more segment for notes.
+ */
+ fill_elf_header(&elf, segs + 1, ELF_MACHINE, 0);
+ if (dump_write(fd, &elf, sizeof (elf)) != 0)
+ goto out;
+
+ /* fill in in-memory version of notes */
+ if (fill_note_info(&info, signr, env) < 0)
+ goto out;
+
+ offset += sizeof (elf); /* elf header */
+ offset += (segs + 1) * sizeof (struct elf_phdr); /* program headers */
+
+ /* write out notes program header */
+ fill_elf_note_phdr(&phdr, info.notes_size, offset);
+
+ offset += info.notes_size;
+ if (dump_write(fd, &phdr, sizeof (phdr)) != 0)
+ goto out;
+
+ /*
+ * ELF specification wants data to start at page boundary so
+ * we align it here.
+ */
+ offset = roundup(offset, ELF_EXEC_PAGESIZE);
+
+ /*
+ * Write program headers for memory regions mapped in
+ * the target process.
+ */
+ for (vma = vma_first(mm); vma != NULL; vma = vma_next(vma)) {
+ (void) memset(&phdr, 0, sizeof (phdr));
+
+ phdr.p_type = PT_LOAD;
+ phdr.p_offset = offset;
+ phdr.p_vaddr = vma->vma_start;
+ phdr.p_paddr = 0;
+ phdr.p_filesz = vma_dump_size(vma);
+ offset += phdr.p_filesz;
+ phdr.p_memsz = vma->vma_end - vma->vma_start;
+ phdr.p_flags = vma->vma_flags & PROT_READ ? PF_R : 0;
+ if (vma->vma_flags & PROT_WRITE)
+ phdr.p_flags |= PF_W;
+ if (vma->vma_flags & PROT_EXEC)
+ phdr.p_flags |= PF_X;
+ phdr.p_align = ELF_EXEC_PAGESIZE;
+
+ dump_write(fd, &phdr, sizeof (phdr));
+ }
+
+ /*
+ * Next we write notes just after program headers. No
+ * alignment needed here.
+ */
+ if (write_note_info(&info, fd) < 0)
+ goto out;
+
+ /* align data to page boundary */
+ data_offset = lseek(fd, 0, SEEK_CUR);
+ data_offset = TARGET_PAGE_ALIGN(data_offset);
+ if (lseek(fd, data_offset, SEEK_SET) != data_offset)
+ goto out;
+
+ /*
+ * Finally we can dump process memory into corefile as well.
+ */
+ for (vma = vma_first(mm); vma != NULL; vma = vma_next(vma)) {
+ abi_ulong addr;
+ abi_ulong end;
+
+ end = vma->vma_start + vma_dump_size(vma);
+
+ for (addr = vma->vma_start; addr < end;
+ addr += TARGET_PAGE_SIZE) {
+ char page[TARGET_PAGE_SIZE];
+ int error;
+
+ /*
+ * Read in page from target process memory and
+ * write it to coredump file.
+ */
+ error = copy_from_user(page, addr, sizeof (page));
+ if (error != 0) {
+ (void) fprintf(stderr, "unable to dump " TARGET_FMT_lx "\n",
+ addr);
+ errno = -error;
+ goto out;
+ }
+ if (dump_write(fd, page, TARGET_PAGE_SIZE) < 0)
+ goto out;
+ }
+ }
+
+out:
+ free_note_info(&info);
+ if (mm != NULL)
+ vma_delete(mm);
+ (void) close(fd);
+
+ if (errno != 0)
+ return (-errno);
+ return (0);
+}
+
+#endif /* USE_ELF_CORE_DUMP */
+
static int load_aout_interp(void * exptr, int interp_fd)
{
printf("a.out interpreter not yet supported\n");
diff --git a/linux-user/linuxload.c b/linux-user/linuxload.c
index ada7c69..14c433e 100644
--- a/linux-user/linuxload.c
+++ b/linux-user/linuxload.c
@@ -115,6 +115,7 @@ static int prepare_binprm(struct linux_binprm *bprm)
abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp,
abi_ulong stringp, int push_ptr)
{
+ TaskState *ts = (TaskState *)thread_env->opaque;
int n = sizeof(abi_ulong);
abi_ulong envp;
abi_ulong argv;
@@ -133,13 +134,14 @@ abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp,
sp -= n;
/* FIXME - handle put_user() failures */
put_user_ual(argc, sp);
-
+ ts->info->arg_start = stringp;
while (argc-- > 0) {
/* FIXME - handle put_user() failures */
put_user_ual(stringp, argv);
argv += n;
stringp += target_strlen(stringp) + 1;
}
+ ts->info->arg_end = stringp;
/* FIXME - handle put_user() failures */
put_user_ual(0, argv);
while (envc-- > 0) {
@@ -155,45 +157,45 @@ abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp,
}
int loader_exec(const char * filename, char ** argv, char ** envp,
- struct target_pt_regs * regs, struct image_info *infop)
+ struct target_pt_regs * regs, struct image_info *infop,
+ struct linux_binprm *bprm)
{
- struct linux_binprm bprm;
int retval;
int i;
- bprm.p = TARGET_PAGE_SIZE*MAX_ARG_PAGES-sizeof(unsigned int);
+ bprm->p = TARGET_PAGE_SIZE*MAX_ARG_PAGES-sizeof(unsigned int);
for (i=0 ; i<MAX_ARG_PAGES ; i++) /* clear page-table */
- bprm.page[i] = 0;
+ bprm->page[i] = 0;
retval = open(filename, O_RDONLY);
if (retval < 0)
return retval;
- bprm.fd = retval;
- bprm.filename = (char *)filename;
- bprm.argc = count(argv);
- bprm.argv = argv;
- bprm.envc = count(envp);
- bprm.envp = envp;
+ bprm->fd = retval;
+ bprm->filename = (char *)filename;
+ bprm->argc = count(argv);
+ bprm->argv = argv;
+ bprm->envc = count(envp);
+ bprm->envp = envp;
- retval = prepare_binprm(&bprm);
+ retval = prepare_binprm(bprm);
infop->host_argv = argv;
if(retval>=0) {
- if (bprm.buf[0] == 0x7f
- && bprm.buf[1] == 'E'
- && bprm.buf[2] == 'L'
- && bprm.buf[3] == 'F') {
+ if (bprm->buf[0] == 0x7f
+ && bprm->buf[1] == 'E'
+ && bprm->buf[2] == 'L'
+ && bprm->buf[3] == 'F') {
#ifndef TARGET_HAS_ELFLOAD32
- retval = load_elf_binary(&bprm,regs,infop);
+ retval = load_elf_binary(bprm,regs,infop);
#else
- retval = load_elf_binary_multi(&bprm, regs, infop);
+ retval = load_elf_binary_multi(bprm, regs, infop);
#endif
#if defined(TARGET_HAS_BFLT)
- } else if (bprm.buf[0] == 'b'
- && bprm.buf[1] == 'F'
- && bprm.buf[2] == 'L'
- && bprm.buf[3] == 'T') {
- retval = load_flt_binary(&bprm,regs,infop);
+ } else if (bprm->buf[0] == 'b'
+ && bprm->buf[1] == 'F'
+ && bprm->buf[2] == 'L'
+ && bprm->buf[3] == 'T') {
+ retval = load_flt_binary(bprm,regs,infop);
#endif
} else {
fprintf(stderr, "Unknown binary format\n");
@@ -209,7 +211,7 @@ int loader_exec(const char * filename, char ** argv, char ** envp,
/* Something went wrong, return the inode and free the argument pages*/
for (i=0 ; i<MAX_ARG_PAGES ; i++) {
- free(bprm.page[i]);
+ free(bprm->page[i]);
}
return(retval);
}
diff --git a/linux-user/main.c b/linux-user/main.c
index 4832d3f..7eabd0c 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -25,6 +25,7 @@
#include <errno.h>
#include <unistd.h>
#include <sys/mman.h>
+#include <sys/syscall.h>
#include "qemu.h"
#include "qemu-common.h"
@@ -2319,6 +2320,27 @@ static void usage(void)
THREAD CPUState *thread_env;
+void task_settid(TaskState *ts)
+{
+ if (ts->ts_tid == 0) {
+#ifdef USE_NPTL
+ ts->ts_tid = (pid_t)syscall(SYS_gettid);
+#else
+ /* when no threads are used, tid becomes pid */
+ ts->ts_tid = getpid();
+#endif
+ }
+}
+
+void stop_all_tasks(void)
+{
+ /*
+ * We trust that when using NPTL, start_exclusive()
+ * handles thread stopping correctly.
+ */
+ start_exclusive();
+}
+
/* Assumes contents are already zeroed. */
void init_task_state(TaskState *ts)
{
@@ -2338,6 +2360,7 @@ int main(int argc, char **argv, char **envp)
const char *cpu_model;
struct target_pt_regs regs1, *regs = ®s1;
struct image_info info1, *info = &info1;
+ struct linux_binprm bprm;
TaskState ts1, *ts = &ts1;
CPUState *env;
int optind;
@@ -2467,6 +2490,8 @@ int main(int argc, char **argv, char **envp)
/* Zero out image_info */
memset(info, 0, sizeof(struct image_info));
+ memset(&bprm, 0, sizeof (bprm));
+
/* Scan interp_prefix dir for replacement files. */
init_paths(interp_prefix);
@@ -2543,7 +2568,16 @@ int main(int argc, char **argv, char **envp)
}
target_argv[target_argc] = NULL;
- if (loader_exec(filename, target_argv, target_environ, regs, info) != 0) {
+ memset(ts, 0, sizeof(TaskState));
+ init_task_state(ts);
+ /* build Task State */
+ ts->info = info;
+ ts->bprm = &bprm;
+ env->opaque = ts;
+ task_settid(ts);
+
+ if (loader_exec(filename, target_argv, target_environ, regs,
+ info, &bprm) != 0) {
printf("Error loading %s\n", filename);
_exit(1);
}
@@ -2579,12 +2613,6 @@ int main(int argc, char **argv, char **envp)
syscall_init();
signal_init();
- /* build Task State */
- memset(ts, 0, sizeof(TaskState));
- init_task_state(ts);
- ts->info = info;
- env->opaque = ts;
-
#if defined(TARGET_I386)
cpu_x86_set_cpl(env, 3);
diff --git a/linux-user/qemu.h b/linux-user/qemu.h
index d83a2a4..e04a31c 100644
--- a/linux-user/qemu.h
+++ b/linux-user/qemu.h
@@ -18,6 +18,7 @@
#include "syscall.h"
#include "target_signal.h"
#include "gdbstub.h"
+#include "sys-queue.h"
#if defined(USE_NPTL)
#define THREAD __thread
@@ -44,6 +45,9 @@ struct image_info {
abi_ulong entry;
abi_ulong code_offset;
abi_ulong data_offset;
+ abi_ulong saved_auxv;
+ abi_ulong arg_start;
+ abi_ulong arg_end;
char **host_argv;
int personality;
};
@@ -87,7 +91,7 @@ struct emulated_sigtable {
/* NOTE: we force a big alignment so that the stack stored after is
aligned too */
typedef struct TaskState {
- struct TaskState *next;
+ pid_t ts_tid; /* tid (or pid) of this task */
#ifdef TARGET_ARM
/* FPA state */
FPA11 fpa;
@@ -114,6 +118,7 @@ typedef struct TaskState {
#endif
int used; /* non zero if used */
struct image_info *info;
+ struct linux_binprm *bprm;
struct emulated_sigtable sigtab[TARGET_NSIG];
struct sigqueue sigqueue_table[MAX_SIGQUEUE_SIZE]; /* siginfo queue */
@@ -125,6 +130,8 @@ typedef struct TaskState {
extern char *exec_path;
void init_task_state(TaskState *ts);
+void task_settid(TaskState *);
+void stop_all_tasks(void);
extern const char *qemu_uname_release;
/* ??? See if we can avoid exposing so much of the loader internals. */
@@ -149,13 +156,15 @@ struct linux_binprm {
char **argv;
char **envp;
char * filename; /* Name of binary */
+ int (*core_dump)(int, const CPUState *); /* coredump routine */
};
void do_init_thread(struct target_pt_regs *regs, struct image_info *infop);
abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp,
abi_ulong stringp, int push_ptr);
int loader_exec(const char * filename, char ** argv, char ** envp,
- struct target_pt_regs * regs, struct image_info *infop);
+ struct target_pt_regs * regs, struct image_info *infop,
+ struct linux_binprm *);
int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
struct image_info * info);
diff --git a/linux-user/signal.c b/linux-user/signal.c
index 371927e..6a34171 100644
--- a/linux-user/signal.c
+++ b/linux-user/signal.c
@@ -27,6 +27,7 @@
#include <errno.h>
#include <assert.h>
#include <sys/ucontext.h>
+#include <sys/resource.h>
#include "qemu.h"
#include "qemu-common.h"
@@ -287,6 +288,23 @@ static int fatal_signal (int sig)
}
}
+/* returns 1 if given signal should dump core if not handled */
+static int core_dump_signal(int sig)
+{
+ switch (sig) {
+ case TARGET_SIGABRT:
+ case TARGET_SIGFPE:
+ case TARGET_SIGILL:
+ case TARGET_SIGQUIT:
+ case TARGET_SIGSEGV:
+ case TARGET_SIGTRAP:
+ case TARGET_SIGBUS:
+ return (1);
+ default:
+ return (0);
+ }
+}
+
void signal_init(void)
{
struct sigaction act;
@@ -352,13 +370,29 @@ static inline void free_sigqueue(CPUState *env, struct sigqueue *q)
/* abort execution with signal */
static void QEMU_NORETURN force_sig(int sig)
{
- int host_sig;
+ TaskState *ts = (TaskState *)thread_env->opaque;
+ int host_sig, core_dumped = 0;
struct sigaction act;
host_sig = target_to_host_signal(sig);
- fprintf(stderr, "qemu: uncaught target signal %d (%s) - exiting\n",
- sig, strsignal(host_sig));
gdb_signalled(thread_env, sig);
+ /* dump core if supported by target binary format */
+ if (core_dump_signal(sig) && (ts->bprm->core_dump != NULL)) {
+ stop_all_tasks();
+ core_dumped =
+ ((*ts->bprm->core_dump)(sig, thread_env) == 0);
+ }
+ if (core_dumped) {
+ /* we already dumped the core of target process, we don't want
+ * a coredump of qemu itself */
+ struct rlimit nodump;
+ getrlimit(RLIMIT_CORE, &nodump);
+ nodump.rlim_cur=0;
+ setrlimit(RLIMIT_CORE, &nodump);
+ (void) fprintf(stderr, "qemu: uncaught target signal %d (%s) - %s\n",
+ sig, strsignal(host_sig), "core dumped" );
+ }
+
/* The proper exit code for dieing from an uncaught signal is
* -<signal>. The kernel doesn't allow exit() or _exit() to pass
* a negative value. To get the proper exit code we need to
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 47d03f7..56f2a3f 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -3379,11 +3379,14 @@ static void *clone_func(void *arg)
{
new_thread_info *info = arg;
CPUState *env;
+ TaskState *ts;
env = info->env;
thread_env = env;
+ ts = (TaskState *)thread_env->opaque;
info->tid = gettid();
env->host_tid = info->tid;
+ task_settid(ts);
if (info->child_tidptr)
put_user_u32(info->tid, info->child_tidptr);
if (info->parent_tidptr)
@@ -3435,6 +3438,7 @@ static int do_fork(CPUState *env, unsigned int flags, abi_ulong newsp,
flags &= ~(CLONE_VFORK | CLONE_VM);
if (flags & CLONE_VM) {
+ TaskState *parent_ts = (TaskState *)env->opaque;
#if defined(USE_NPTL)
new_thread_info info;
pthread_attr_t attr;
@@ -3447,6 +3451,8 @@ static int do_fork(CPUState *env, unsigned int flags, abi_ulong newsp,
/* Init regs that differ from the parent. */
cpu_clone_regs(new_env, newsp);
new_env->opaque = ts;
+ ts->bprm = parent_ts->bprm;
+ ts->info = parent_ts->info;
#if defined(USE_NPTL)
nptl_flags = flags;
flags &= ~CLONE_NPTL_FLAGS2;
--
1.6.2.1
^ permalink raw reply related [flat|nested] 40+ messages in thread* [Qemu-devel] [PATCH 05/21] linux-user: strace now handles guest strings correctly [v2]
2009-06-12 13:50 [Qemu-devel] [PATCH 00/21] Pending linux-user patches riku.voipio
` (3 preceding siblings ...)
2009-06-12 13:50 ` [Qemu-devel] [PATCH 04/21] linux-user: added x86 and x86_64 support for ELF coredump riku.voipio
@ 2009-06-12 13:50 ` riku.voipio
2009-06-14 15:17 ` Blue Swirl
2009-06-12 13:50 ` [Qemu-devel] [PATCH 06/21] Revived GUEST_BASE support for usermode emulation targets [v5] riku.voipio
` (16 subsequent siblings)
21 siblings, 1 reply; 40+ messages in thread
From: riku.voipio @ 2009-06-12 13:50 UTC (permalink / raw)
To: qemu-devel
From: Mika Westerberg <mika.westerberg@iki.fi>
- to not to break strace with GUEST_BASE is set:
- Strace now can load and print guest strings correctly.
- Added printing support for commonly used flags in some syscalls
(e.g open, creat, mmap etc.)
v2:
- fix strace.c build on etch
- add futex print to strace
From: Mika Westerberg <mika.westerberg@iki.fi>
Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
---
linux-user/strace.c | 1072 ++++++++++++++++++++++++++++++++++++++++++++-
linux-user/strace.list | 111 +++---
linux-user/syscall.c | 6 -
linux-user/syscall_defs.h | 6 +
4 files changed, 1118 insertions(+), 77 deletions(-)
diff --git a/linux-user/strace.c b/linux-user/strace.c
index b4caffe..5ea9acb 100644
--- a/linux-user/strace.c
+++ b/linux-user/strace.c
@@ -6,6 +6,9 @@
#include <sys/shm.h>
#include <sys/select.h>
#include <sys/types.h>
+#include <sys/mount.h>
+#include <sys/mman.h>
+#include <linux/futex.h>
#include <unistd.h>
#include "qemu.h"
@@ -21,6 +24,47 @@ struct syscallname {
void (*result)(const struct syscallname *, abi_long);
};
+#ifdef __GNUC__
+/*
+ * It is possible that target doesn't have syscall that uses
+ * following flags but we don't want the compiler to warn
+ * us about them being unused. Same applies to utility print
+ * functions. It is ok to keep them while not used.
+ */
+#define UNUSED __attribute__ ((unused))
+#else
+#define UNUSED
+#endif
+
+/*
+ * Structure used to translate flag values into strings. This is
+ * similar that is in the actual strace tool.
+ */
+struct flags {
+ abi_long f_value; /* flag */
+ const char *f_string; /* stringified flag */
+};
+
+/* common flags for all architectures */
+#define FLAG_GENERIC(name) { name, #name }
+/* target specific flags (syscall_defs.h has TARGET_<flag>) */
+#define FLAG_TARGET(name) { TARGET_ ## name, #name }
+/* end of flags array */
+#define FLAG_END { 0, NULL }
+
+UNUSED static const char *get_comma(int);
+UNUSED static void print_pointer(abi_long, int);
+UNUSED static void print_flags(const struct flags *, abi_long, int);
+UNUSED static void print_at_dirfd(abi_long, int);
+UNUSED static void print_file_mode(abi_long, int);
+UNUSED static void print_open_flags(abi_long, int);
+UNUSED static void print_syscall_prologue(const struct syscallname *);
+UNUSED static void print_syscall_epilogue(const struct syscallname *);
+UNUSED static void print_string(abi_long, int);
+UNUSED static void print_raw_param(const char *, abi_long, int);
+UNUSED static void print_timeval(abi_ulong, int);
+UNUSED static void print_number(abi_long, int);
+
/*
* Utility functions
*/
@@ -100,22 +144,6 @@ print_fdset(int n, abi_ulong target_fds_addr)
}
gemu_log("]");
}
-
-static void
-print_timeval(abi_ulong tv_addr)
-{
- if( tv_addr ) {
- struct target_timeval *tv;
-
- tv = lock_user(VERIFY_READ, tv_addr, sizeof(*tv), 1);
- if (!tv)
- return;
- gemu_log("{" TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "}",
- tv->tv_sec, tv->tv_usec);
- unlock_user(tv, tv_addr, 0);
- } else
- gemu_log("NULL");
-}
#endif
/*
@@ -142,7 +170,7 @@ print_newselect(const struct syscallname *name,
gemu_log(",");
print_fdset(arg1, arg4);
gemu_log(",");
- print_timeval(arg5);
+ print_timeval(arg5, 1);
gemu_log(")");
/* save for use in the return output function below */
@@ -250,11 +278,1019 @@ print_syscall_ret_newselect(const struct syscallname *name, abi_long ret)
gemu_log(",");
print_fdset(newselect_arg1,newselect_arg4);
gemu_log(",");
- print_timeval(newselect_arg5);
+ print_timeval(newselect_arg5, 1);
gemu_log(")\n");
}
#endif
+UNUSED static struct flags access_flags[] = {
+ FLAG_GENERIC(F_OK),
+ FLAG_GENERIC(R_OK),
+ FLAG_GENERIC(W_OK),
+ FLAG_GENERIC(X_OK),
+ FLAG_END,
+};
+
+UNUSED static struct flags at_file_flags[] = {
+#ifdef AT_EACCESS
+ FLAG_GENERIC(AT_EACCESS),
+#endif
+#ifdef AT_SYMLINK_NOFOLLOW
+ FLAG_GENERIC(AT_SYMLINK_NOFOLLOW),
+#endif
+ FLAG_END,
+};
+
+UNUSED static struct flags unlinkat_flags[] = {
+#ifdef AT_REMOVEDIR
+ FLAG_GENERIC(AT_REMOVEDIR),
+#endif
+ FLAG_END,
+};
+
+UNUSED static struct flags mode_flags[] = {
+ FLAG_GENERIC(S_IFSOCK),
+ FLAG_GENERIC(S_IFLNK),
+ FLAG_GENERIC(S_IFREG),
+ FLAG_GENERIC(S_IFBLK),
+ FLAG_GENERIC(S_IFDIR),
+ FLAG_GENERIC(S_IFCHR),
+ FLAG_GENERIC(S_IFIFO),
+ FLAG_END,
+};
+
+UNUSED static struct flags open_access_flags[] = {
+ FLAG_TARGET(O_RDONLY),
+ FLAG_TARGET(O_WRONLY),
+ FLAG_TARGET(O_RDWR),
+ FLAG_END,
+};
+
+UNUSED static struct flags open_flags[] = {
+ FLAG_TARGET(O_APPEND),
+ FLAG_TARGET(O_CREAT),
+ FLAG_TARGET(O_DIRECTORY),
+ FLAG_TARGET(O_EXCL),
+ FLAG_TARGET(O_LARGEFILE),
+ FLAG_TARGET(O_NOCTTY),
+ FLAG_TARGET(O_NOFOLLOW),
+ FLAG_TARGET(O_NONBLOCK), /* also O_NDELAY */
+ FLAG_TARGET(O_SYNC),
+ FLAG_TARGET(O_TRUNC),
+#ifdef O_DIRECT
+ FLAG_TARGET(O_DIRECT),
+#endif
+ FLAG_END,
+};
+
+UNUSED static struct flags mount_flags[] = {
+#ifdef MS_BIND
+ FLAG_GENERIC(MS_BIND),
+#endif
+#ifdef MS_DIRSYNC
+ FLAG_GENERIC(MS_DIRSYNC),
+#endif
+ FLAG_GENERIC(MS_MANDLOCK),
+#ifdef MS_MOVE
+ FLAG_GENERIC(MS_MOVE),
+#endif
+ FLAG_GENERIC(MS_NOATIME),
+ FLAG_GENERIC(MS_NODEV),
+ FLAG_GENERIC(MS_NODIRATIME),
+ FLAG_GENERIC(MS_NOEXEC),
+ FLAG_GENERIC(MS_NOSUID),
+ FLAG_GENERIC(MS_RDONLY),
+#ifdef MS_RELATIME
+ FLAG_GENERIC(MS_RELATIME),
+#endif
+ FLAG_GENERIC(MS_REMOUNT),
+ FLAG_GENERIC(MS_SYNCHRONOUS),
+ FLAG_END,
+};
+
+UNUSED static struct flags umount2_flags[] = {
+#ifdef MNT_FORCE
+ FLAG_GENERIC(MNT_FORCE),
+#endif
+#ifdef MNT_DETACH
+ FLAG_GENERIC(MNT_DETACH),
+#endif
+#ifdef MNT_EXPIRE
+ FLAG_GENERIC(MNT_EXPIRE),
+#endif
+ FLAG_END,
+};
+
+UNUSED static struct flags mmap_prot_flags[] = {
+ FLAG_GENERIC(PROT_NONE),
+ FLAG_GENERIC(PROT_EXEC),
+ FLAG_GENERIC(PROT_READ),
+ FLAG_GENERIC(PROT_WRITE),
+ FLAG_END,
+};
+
+UNUSED static struct flags mmap_flags[] = {
+ FLAG_TARGET(MAP_SHARED),
+ FLAG_TARGET(MAP_PRIVATE),
+ FLAG_TARGET(MAP_ANONYMOUS),
+ FLAG_TARGET(MAP_DENYWRITE),
+ FLAG_TARGET(MAP_FIXED),
+ FLAG_TARGET(MAP_GROWSDOWN),
+#ifdef MAP_LOCKED
+ FLAG_TARGET(MAP_LOCKED),
+#endif
+#ifdef MAP_NONBLOCK
+ FLAG_TARGET(MAP_NONBLOCK),
+#endif
+ FLAG_TARGET(MAP_NORESERVE),
+#ifdef MAP_POPULATE
+ FLAG_TARGET(MAP_POPULATE),
+#endif
+ FLAG_END,
+};
+
+UNUSED static struct flags fcntl_flags[] = {
+ FLAG_TARGET(F_DUPFD),
+ FLAG_TARGET(F_GETFD),
+ FLAG_TARGET(F_SETFD),
+ FLAG_TARGET(F_GETFL),
+ FLAG_TARGET(F_SETFL),
+ FLAG_TARGET(F_GETLK),
+ FLAG_TARGET(F_SETLK),
+ FLAG_TARGET(F_SETLKW),
+ FLAG_END,
+};
+
+/*
+ * print_xxx utility functions. These are used to print syscall
+ * parameters in certain format. All of these have parameter
+ * named 'last'. This parameter is used to add comma to output
+ * when last == 0.
+ */
+
+static const char *
+get_comma(int last)
+{
+ return ((last) ? "" : ",");
+}
+
+static void
+print_flags(const struct flags *f, abi_long tflags, int last)
+{
+ const char *sep = "";
+ int flags;
+ int n;
+
+ flags = (int)tswap32(tflags);
+
+ if ((flags == 0) && (f->f_value == 0)) {
+ gemu_log("%s%s", f->f_string, get_comma(last));
+ return;
+ }
+ for (n = 0; f->f_string != NULL; f++) {
+ if ((f->f_value != 0) && ((flags & f->f_value) == f->f_value)) {
+ gemu_log("%s%s", sep, f->f_string);
+ flags &= ~f->f_value;
+ sep = "|";
+ n++;
+ }
+ }
+
+ if (n > 0) {
+ /* print rest of the flags as numeric */
+ if (flags != 0) {
+ gemu_log("%s%#x%s", sep, flags, get_comma(last));
+ } else {
+ gemu_log("%s", get_comma(last));
+ }
+ } else {
+ /* no string version of flags found, print them in hex then */
+ gemu_log("%#x%s", flags, get_comma(last));
+ }
+}
+
+static void
+print_at_dirfd(abi_long tdirfd, int last)
+{
+ int dirfd = tswap32(tdirfd);
+
+#ifdef AT_FDCWD
+ if (dirfd == AT_FDCWD) {
+ gemu_log("AT_FDCWD%s", get_comma(last));
+ return;
+ }
+#endif
+ gemu_log("%d%s", dirfd, get_comma(last));
+}
+
+static void
+print_file_mode(abi_long tmode, int last)
+{
+ const char *sep = "";
+ const struct flags *m;
+ mode_t mode = (mode_t)tswap32(tmode);
+
+ for (m = &mode_flags[0]; m->f_string != NULL; m++) {
+ if ((m->f_value & mode) == m->f_value) {
+ gemu_log("%s%s", m->f_string, sep);
+ sep = "|";
+ mode &= ~m->f_value;
+ break;
+ }
+ }
+
+ mode &= ~S_IFMT;
+ /* print rest of the mode as octal */
+ if (mode != 0)
+ gemu_log("%s%#o", sep, mode);
+
+ gemu_log("%s", get_comma(last));
+}
+
+static void
+print_open_flags(abi_long tflags, int last)
+{
+ int flags = tswap32(tflags);
+
+ print_flags(open_access_flags, flags & TARGET_O_ACCMODE, 1);
+ flags &= ~TARGET_O_ACCMODE;
+ if (flags == 0) {
+ gemu_log("%s", get_comma(last));
+ return;
+ }
+ gemu_log("|");
+ print_flags(open_flags, flags, last);
+}
+
+static void
+print_syscall_prologue(const struct syscallname *sc)
+{
+ gemu_log("%s(", sc->name);
+}
+
+/*ARGSUSED*/
+static void
+print_syscall_epilogue(const struct syscallname *sc)
+{
+ (void)sc;
+ gemu_log(")");
+}
+
+static void
+print_string(abi_long addr, int last)
+{
+ char *s;
+
+ if ((s = lock_user_string(addr)) != NULL) {
+ gemu_log("\"%s\"%s", s, get_comma(last));
+ unlock_user(s, addr, 0);
+ } else {
+ /* can't get string out of it, so print it as pointer */
+ print_pointer(addr, last);
+ }
+}
+
+/*
+ * Prints out raw parameter using given format. Caller needs
+ * to do byte swapping if needed.
+ */
+static void
+print_raw_param(const char *fmt, abi_long param, int last)
+{
+ char format[64];
+
+ (void) snprintf(format, sizeof (format), "%s%s", fmt, get_comma(last));
+ gemu_log(format, param);
+}
+
+static void
+print_pointer(abi_long p, int last)
+{
+ if (p == 0)
+ gemu_log("NULL%s", get_comma(last));
+ else
+ gemu_log("0x" TARGET_ABI_FMT_lx "%s", p, get_comma(last));
+}
+
+/*
+ * Reads 32-bit (int) number from guest address space from
+ * address 'addr' and prints it.
+ */
+static void
+print_number(abi_long addr, int last)
+{
+ if (addr == 0) {
+ gemu_log("NULL%s", get_comma(last));
+ } else {
+ int num;
+
+ get_user_s32(num, addr);
+ gemu_log("[%d]%s", num, get_comma(last));
+ }
+}
+
+static void
+print_timeval(abi_ulong tv_addr, int last)
+{
+ if( tv_addr ) {
+ struct target_timeval *tv;
+
+ tv = lock_user(VERIFY_READ, tv_addr, sizeof(*tv), 1);
+ if (!tv)
+ return;
+ gemu_log("{" TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "}%s",
+ tv->tv_sec, tv->tv_usec, get_comma(last));
+ unlock_user(tv, tv_addr, 0);
+ } else
+ gemu_log("NULL%s", get_comma(last));
+}
+
+#undef UNUSED
+
+#ifdef TARGET_NR_accept
+static void
+print_accept(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_raw_param("%d", tswap32(arg0), 0);
+ print_pointer(arg1, 0);
+ print_number(arg2, 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_access
+static void
+print_access(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_string(arg0, 0);
+ print_flags(access_flags, arg1, 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_brk
+static void
+print_brk(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_pointer(arg0, 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_chdir
+static void
+print_chdir(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_string(arg0, 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_chmod
+static void
+print_chmod(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_string(arg0, 0);
+ print_file_mode(arg1, 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_creat
+static void
+print_creat(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_string(arg0, 0);
+ print_file_mode(arg1, 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_execv
+static void
+print_execv(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_string(arg0, 0);
+ print_raw_param("0x" TARGET_ABI_FMT_lx, tswapl(arg1), 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_faccessat
+static void
+print_faccessat(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_at_dirfd(arg0, 0);
+ print_string(arg1, 0);
+ print_flags(access_flags, arg2, 0);
+ print_flags(at_file_flags, arg3, 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_fchmodat
+static void
+print_fchmodat(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_at_dirfd(arg0, 0);
+ print_string(arg1, 0);
+ print_file_mode(arg2, 0);
+ print_flags(at_file_flags, arg3, 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_fchownat
+static void
+print_fchownat(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_at_dirfd(arg0, 0);
+ print_string(arg1, 0);
+#ifdef USE_UID16
+ print_raw_param("%d", tswap16(arg2), 0);
+ print_raw_param("%d", tswap16(arg3), 0);
+#else
+ print_raw_param("%d", tswap32(arg2), 0);
+ print_raw_param("%d", tswap32(arg3), 0);
+#endif
+ print_flags(at_file_flags, arg4, 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
+#if defined(TARGET_NR_fcntl) || defined(TARGET_NR_fcntl64)
+static void
+print_fcntl(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_raw_param("%d", tswap32(arg0), 0);
+ print_flags(fcntl_flags, arg1, 0);
+ /*
+ * TODO: check flags and print following argument only
+ * when needed.
+ */
+ print_pointer(arg2, 1);
+ print_syscall_epilogue(name);
+}
+#define print_fcntl64 print_fcntl
+#endif
+
+
+#ifdef TARGET_NR_futimesat
+static void
+print_futimesat(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_at_dirfd(arg0, 0);
+ print_string(arg1, 0);
+ print_timeval(arg2, 0);
+ print_timeval(arg2 + sizeof (struct target_timeval), 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_link
+static void
+print_link(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_string(arg0, 0);
+ print_string(arg1, 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_linkat
+static void
+print_linkat(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_at_dirfd(arg0, 0);
+ print_string(arg1, 0);
+ print_at_dirfd(arg2, 0);
+ print_string(arg3, 0);
+ print_flags(at_file_flags, arg4, 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
+#if defined(TARGET_NR_stat) || defined(TARGET_NR_stat64) || \
+ defined(TARGET_NR_lstat) || defined(TARGET_NR_lstat64)
+static void
+print_stat(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_string(arg0, 0);
+ print_pointer(arg1, 1);
+ print_syscall_epilogue(name);
+}
+#define print_lstat print_stat
+#define print_stat64 print_stat
+#define print_lstat64 print_stat
+#endif
+
+#if defined(TARGET_NR_fstat) || defined(TARGET_NR_fstat64)
+static void
+print_fstat(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_raw_param("%d", tswap32(arg0), 0);
+ print_pointer(arg1, 1);
+ print_syscall_epilogue(name);
+}
+#define print_fstat64 print_fstat
+#endif
+
+#ifdef TARGET_NR_mkdir
+static void
+print_mkdir(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_string(arg0, 0);
+ print_file_mode(arg1, 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_mkdirat
+static void
+print_mkdirat(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_at_dirfd(arg0, 0);
+ print_string(arg1, 0);
+ print_file_mode(arg2, 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_mknod
+static void
+print_mknod(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ int hasdev = (tswapl(arg1) & (S_IFCHR|S_IFBLK));
+
+ print_syscall_prologue(name);
+ print_string(arg0, 0);
+ print_file_mode(arg1, (hasdev == 0));
+ if (hasdev) {
+ print_raw_param("makedev(%d", major(tswapl(arg2)), 0);
+ print_raw_param("%d)", minor(tswapl(arg2)), 1);
+ }
+ print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_mknodat
+static void
+print_mknodat(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ int hasdev = (tswapl(arg2) & (S_IFCHR|S_IFBLK));
+
+ print_syscall_prologue(name);
+ print_at_dirfd(arg0, 0);
+ print_string(arg1, 0);
+ print_file_mode(arg2, (hasdev == 0));
+ if (hasdev) {
+ print_raw_param("makedev(%d", major(tswapl(arg3)), 0);
+ print_raw_param("%d)", minor(tswapl(arg3)), 1);
+ }
+ print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_mq_open
+static void
+print_mq_open(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ int is_creat = (tswapl(arg1) & TARGET_O_CREAT);
+
+ print_syscall_prologue(name);
+ print_string(arg0, 0);
+ print_open_flags(arg1, (is_creat == 0));
+ if (is_creat) {
+ print_file_mode(arg2, 0);
+ print_pointer(arg3, 1);
+ }
+ print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_open
+static void
+print_open(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ int is_creat = (tswap32(arg1) & TARGET_O_CREAT);
+
+ print_syscall_prologue(name);
+ print_string(arg0, 0);
+ print_open_flags(arg1, (is_creat == 0));
+ if (is_creat)
+ print_file_mode(arg2, 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_openat
+static void
+print_openat(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ int is_creat = (tswap32(arg2) & TARGET_O_CREAT);
+
+ print_syscall_prologue(name);
+ print_at_dirfd(arg0, 0);
+ print_string(arg1, 0);
+ print_open_flags(arg2, (is_creat == 0));
+ if (is_creat)
+ print_file_mode(arg3, 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_mq_unlink
+static void
+print_mq_unlink(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_string(arg0, 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
+#if defined(TARGET_NR_fstatat64) || defined(TARGET_NR_newfstatat)
+static void
+print_fstatat64(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_at_dirfd(arg0, 0);
+ print_string(arg1, 0);
+ print_pointer(arg2, 0);
+ print_flags(at_file_flags, arg3, 1);
+ print_syscall_epilogue(name);
+}
+#define print_newfstatat print_fstatat64
+#endif
+
+#ifdef TARGET_NR_readlink
+static void
+print_readlink(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_string(arg0, 0);
+ print_pointer(arg1, 0);
+ print_raw_param("%u", tswapl(arg2), 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_readlinkat
+static void
+print_readlinkat(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_at_dirfd(arg0, 0);
+ print_string(arg1, 0);
+ print_pointer(arg2, 0);
+ print_raw_param("%u", tswapl(arg3), 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_rename
+static void
+print_rename(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_string(arg0, 0);
+ print_string(arg1, 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_renameat
+static void
+print_renameat(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_at_dirfd(arg0, 0);
+ print_string(arg1, 0);
+ print_at_dirfd(arg2, 0);
+ print_string(arg3, 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_statfs
+static void
+print_statfs(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_string(arg0, 0);
+ print_pointer(arg1, 1);
+ print_syscall_epilogue(name);
+}
+#define print_statfs64 print_statfs
+#endif
+
+#ifdef TARGET_NR_symlink
+static void
+print_symlink(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_string(arg0, 0);
+ print_string(arg1, 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_symlinkat
+static void
+print_symlinkat(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_string(arg0, 0);
+ print_at_dirfd(arg1, 0);
+ print_string(arg2, 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_mount
+static void
+print_mount(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_string(arg0, 0);
+ print_string(arg1, 0);
+ print_string(arg2, 0);
+ print_flags(mount_flags, arg3, 0);
+ print_pointer(arg4, 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_umount
+static void
+print_umount(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_string(arg0, 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_umount2
+static void
+print_umount2(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_string(arg0, 0);
+ print_flags(umount2_flags, arg1, 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_unlink
+static void
+print_unlink(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_string(arg0, 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_unlinkat
+static void
+print_unlinkat(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_at_dirfd(arg0, 0);
+ print_string(arg1, 0);
+ print_flags(unlinkat_flags, arg2, 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_utime
+static void
+print_utime(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_string(arg0, 0);
+ print_pointer(arg1, 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_utimes
+static void
+print_utimes(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_string(arg0, 0);
+ print_pointer(arg1, 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_utimensat
+static void
+print_utimensat(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_at_dirfd(arg0, 0);
+ print_string(arg1, 0);
+ print_pointer(arg2, 0);
+ print_flags(at_file_flags, arg3, 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_mmap
+static void
+print_mmap(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_pointer(arg0, 0);
+ print_raw_param("%d", tswapl(arg1), 0);
+ print_flags(mmap_prot_flags, arg2, 0);
+ print_flags(mmap_flags, arg3, 0);
+ print_raw_param("%d", tswapl(arg4), 0);
+ print_raw_param("%#x", tswapl(arg5), 1);
+ print_syscall_epilogue(name);
+}
+#define print_mmap2 print_mmap
+#endif
+
+#ifdef TARGET_NR_mprotect
+static void
+print_mprotect(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_pointer(arg0, 0);
+ print_raw_param("%d", tswapl(arg1), 0);
+ print_flags(mmap_prot_flags, arg2, 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_munmap
+static void
+print_munmap(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_pointer(arg0, 0);
+ print_raw_param("%d", tswapl(arg1), 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_futex
+static void print_futex_op(abi_long tflag, int last)
+{
+#define print_op(val) \
+if( cmd == val ) { \
+ gemu_log(#val); \
+ return; \
+}
+
+ int cmd = (int)tswap32(tflag);
+#ifdef FUTEX_PRIVATE_FLAG
+ if (cmd == FUTEX_PRIVATE_FLAG)
+ gemu_log("FUTEX_PRIVATE_FLAG|");
+#endif
+ print_op(FUTEX_WAIT)
+ print_op(FUTEX_WAKE)
+ print_op(FUTEX_FD)
+ print_op(FUTEX_REQUEUE)
+ print_op(FUTEX_CMP_REQUEUE)
+ print_op(FUTEX_WAKE_OP)
+ print_op(FUTEX_LOCK_PI)
+ print_op(FUTEX_UNLOCK_PI)
+ print_op(FUTEX_TRYLOCK_PI)
+#ifdef FUTEX_WAIT_BITSET
+ print_op(FUTEX_WAIT_BITSET)
+#endif
+#ifdef FUTEX_WAKE_BITSET
+ print_op(FUTEX_WAKE_BITSET)
+#endif
+ /* unknown values */
+ gemu_log("%d",cmd);
+}
+
+static void
+print_futex(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_pointer(arg0, 0);
+ print_futex_op(arg1, 0);
+ print_raw_param(",%d", tswapl(arg2), 0);
+ print_pointer(arg3, 0); /* struct timespec */
+ print_pointer(arg4, 0);
+ print_raw_param("%d", tswapl(arg4), 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
/*
* An array of all of the syscalls we know about
*/
diff --git a/linux-user/strace.list b/linux-user/strace.list
index 3f688db..97b7f76 100644
--- a/linux-user/strace.list
+++ b/linux-user/strace.list
@@ -1,8 +1,13 @@
+/*
+ * Note that if you change format strings in these, check also
+ * that corresponding print functions are able to handle string
+ * locking correctly (see strace.c).
+ */
#ifdef TARGET_NR_accept
-{ TARGET_NR_accept, "accept" , "%s(%d,%#x,%#x)", NULL, NULL },
+{ TARGET_NR_accept, "accept" , NULL, print_accept, NULL },
#endif
#ifdef TARGET_NR_access
-{ TARGET_NR_access, "access" , "%s(\"%s\",%#o)", NULL, NULL },
+{ TARGET_NR_access, "access" , NULL, print_access, NULL },
#endif
#ifdef TARGET_NR_acct
{ TARGET_NR_acct, "acct" , NULL, NULL, NULL },
@@ -38,7 +43,7 @@
{ TARGET_NR_break, "break" , NULL, NULL, NULL },
#endif
#ifdef TARGET_NR_brk
-{ TARGET_NR_brk, "brk" , NULL, NULL, print_syscall_ret_addr },
+{ TARGET_NR_brk, "brk" , NULL, print_brk, print_syscall_ret_addr },
#endif
#ifdef TARGET_NR_cachectl
{ TARGET_NR_cachectl, "cachectl" , NULL, NULL, NULL },
@@ -53,10 +58,10 @@
{ TARGET_NR_capset, "capset" , NULL, NULL, NULL },
#endif
#ifdef TARGET_NR_chdir
-{ TARGET_NR_chdir, "chdir" , "%s(\"%s\")", NULL, NULL },
+{ TARGET_NR_chdir, "chdir" , NULL, print_chdir, NULL },
#endif
#ifdef TARGET_NR_chmod
-{ TARGET_NR_chmod, "chmod" , "%s(\"%s\",%#o)", NULL, NULL },
+{ TARGET_NR_chmod, "chmod" , NULL, print_chmod, NULL },
#endif
#ifdef TARGET_NR_chown
{ TARGET_NR_chown, "chown" , NULL, NULL, NULL },
@@ -89,7 +94,7 @@
{ TARGET_NR_connect, "connect" , "%s(%d,%#x,%d)", NULL, NULL },
#endif
#ifdef TARGET_NR_creat
-{ TARGET_NR_creat, "creat" , "%s(\"%s\",%#o)", NULL, NULL },
+{ TARGET_NR_creat, "creat" , NULL, print_creat, NULL },
#endif
#ifdef TARGET_NR_create_module
{ TARGET_NR_create_module, "create_module" , NULL, NULL, NULL },
@@ -122,7 +127,7 @@
{ TARGET_NR_epoll_wait_old, "epoll_wait_old" , NULL, NULL, NULL },
#endif
#ifdef TARGET_NR_execv
-{ TARGET_NR_execv, "execv" , "%s(\"%s\",%ld,%ld,%ld,%ld,%ld)\n", NULL, NULL },
+{ TARGET_NR_execv, "execv" , NULL, print_execv, NULL },
#endif
#ifdef TARGET_NR_execve
{ TARGET_NR_execve, "execve" , NULL, print_execve, NULL },
@@ -140,7 +145,7 @@
{ TARGET_NR_exit_group, "exit_group" , "%s(%d)\n", NULL, NULL },
#endif
#ifdef TARGET_NR_faccessat
-{ TARGET_NR_faccessat, "faccessat" , "%s(%d,\"%s\",%#o,%#x)", NULL, NULL },
+{ TARGET_NR_faccessat, "faccessat" , NULL, print_faccessat, NULL },
#endif
#ifdef TARGET_NR_fadvise64
{ TARGET_NR_fadvise64, "fadvise64" , NULL, NULL, NULL },
@@ -155,22 +160,22 @@
{ TARGET_NR_fchmod, "fchmod" , "%s(%d,%#o)", NULL, NULL },
#endif
#ifdef TARGET_NR_fchmodat
-{ TARGET_NR_fchmodat, "fchmodat" , "%s(%d,\"%s\",%#o,%#x)", NULL, NULL },
+{ TARGET_NR_fchmodat, "fchmodat" , NULL, print_fchmodat, NULL },
#endif
#ifdef TARGET_NR_fchown
-{ TARGET_NR_fchown, "fchown" , "%s(\"%s\",%d,%d)", NULL, NULL },
+{ TARGET_NR_fchown, "fchown" , "%s(%d,%d,%d)", NULL, NULL },
#endif
#ifdef TARGET_NR_fchown32
{ TARGET_NR_fchown32, "fchown32" , NULL, NULL, NULL },
#endif
#ifdef TARGET_NR_fchownat
-{ TARGET_NR_fchownat, "fchownat" , "%s(%d,\"%s\",%d,%d,%#x)", NULL, NULL },
+{ TARGET_NR_fchownat, "fchownat" , NULL, print_fchownat, NULL },
#endif
#ifdef TARGET_NR_fcntl
-{ TARGET_NR_fcntl, "fcntl" , NULL, NULL, NULL },
+{ TARGET_NR_fcntl, "fcntl" , NULL, print_fcntl, NULL },
#endif
#ifdef TARGET_NR_fcntl64
-{ TARGET_NR_fcntl64, "fcntl64" , NULL, NULL, NULL },
+{ TARGET_NR_fcntl64, "fcntl64" , NULL, print_fcntl64, NULL },
#endif
#ifdef TARGET_NR_fdatasync
{ TARGET_NR_fdatasync, "fdatasync" , NULL, NULL, NULL },
@@ -194,10 +199,10 @@
{ TARGET_NR_fsetxattr, "fsetxattr" , NULL, NULL, NULL },
#endif
#ifdef TARGET_NR_fstat
-{ TARGET_NR_fstat, "fstat" , "%s(%d,%p)", NULL, NULL },
+{ TARGET_NR_fstat, "fstat" , NULL, print_fstat, NULL },
#endif
#ifdef TARGET_NR_fstat64
-{ TARGET_NR_fstat64, "fstat64" , "%s(%d,%p)", NULL, NULL },
+{ TARGET_NR_fstat64, "fstat64" , NULL, print_fstat64, NULL },
#endif
#ifdef TARGET_NR_fstatfs
{ TARGET_NR_fstatfs, "fstatfs" , "%s(%d,%p)", NULL, NULL },
@@ -218,10 +223,10 @@
{ TARGET_NR_ftruncate64, "ftruncate64" , NULL, NULL, NULL },
#endif
#ifdef TARGET_NR_futex
-{ TARGET_NR_futex, "futex" , NULL, NULL, NULL },
+{ TARGET_NR_futex, "futex" , NULL, print_futex, NULL },
#endif
#ifdef TARGET_NR_futimesat
-{ TARGET_NR_futimesat, "futimesat" , "%s(%d,\"%s\",%p)", NULL, NULL },
+{ TARGET_NR_futimesat, "futimesat" , NULL, print_futimesat, NULL },
#endif
#ifdef TARGET_NR_getcwd
{ TARGET_NR_getcwd, "getcwd" , "%s(%p,%d)", NULL, NULL },
@@ -425,10 +430,10 @@
{ TARGET_NR_lgetxattr, "lgetxattr" , NULL, NULL, NULL },
#endif
#ifdef TARGET_NR_link
-{ TARGET_NR_link, "link" , "%s(\"%s\",\"%s\")", NULL, NULL },
+{ TARGET_NR_link, "link" , NULL, print_link, NULL },
#endif
#ifdef TARGET_NR_linkat
-{ TARGET_NR_linkat, "linkat" , "%s(%d,\"%s\",%d,\"%s\",%#x)", NULL, NULL },
+{ TARGET_NR_linkat, "linkat" , NULL, print_linkat, NULL },
#endif
#ifdef TARGET_NR_Linux
{ TARGET_NR_Linux, "Linux" , NULL, NULL, NULL },
@@ -461,10 +466,10 @@
{ TARGET_NR_lsetxattr, "lsetxattr" , NULL, NULL, NULL },
#endif
#ifdef TARGET_NR_lstat
-{ TARGET_NR_lstat, "lstat" , "%s(\"%s\",%p)", NULL, NULL },
+{ TARGET_NR_lstat, "lstat" , NULL, print_lstat, NULL },
#endif
#ifdef TARGET_NR_lstat64
-{ TARGET_NR_lstat64, "lstat64" , "%s(\"%s\",%p)", NULL, NULL },
+{ TARGET_NR_lstat64, "lstat64" , NULL, print_lstat64, NULL },
#endif
#ifdef TARGET_NR_madvise
{ TARGET_NR_madvise, "madvise" , NULL, NULL, NULL },
@@ -485,16 +490,16 @@
{ TARGET_NR_mincore, "mincore" , NULL, NULL, NULL },
#endif
#ifdef TARGET_NR_mkdir
-{ TARGET_NR_mkdir, "mkdir" , "%s(\"%s\",%#o)", NULL, NULL },
+{ TARGET_NR_mkdir, "mkdir" , NULL, print_mkdir, NULL },
#endif
#ifdef TARGET_NR_mkdirat
-{ TARGET_NR_mkdirat, "mkdirat" , "%s(%d,\"%s\",%#o)", NULL, NULL },
+{ TARGET_NR_mkdirat, "mkdirat" , NULL, print_mkdirat, NULL },
#endif
#ifdef TARGET_NR_mknod
-{ TARGET_NR_mknod, "mknod" , "%s(\"%s\",%#o,%#x)", NULL, NULL },
+{ TARGET_NR_mknod, "mknod" , NULL, print_mknod, NULL },
#endif
#ifdef TARGET_NR_mknodat
-{ TARGET_NR_mknodat, "mknodat" , "%s(%d,\"%s\",%#o,%#x)", NULL, NULL },
+{ TARGET_NR_mknodat, "mknodat" , NULL, print_mknodat, NULL },
#endif
#ifdef TARGET_NR_mlock
{ TARGET_NR_mlock, "mlock" , NULL, NULL, NULL },
@@ -503,22 +508,22 @@
{ TARGET_NR_mlockall, "mlockall" , NULL, NULL, NULL },
#endif
#ifdef TARGET_NR_mmap
-{ TARGET_NR_mmap, "mmap" , NULL, NULL, print_syscall_ret_addr },
+{ TARGET_NR_mmap, "mmap" , NULL, print_mmap, print_syscall_ret_addr },
#endif
#ifdef TARGET_NR_mmap2
-{ TARGET_NR_mmap2, "mmap2" , NULL, NULL, print_syscall_ret_addr },
+{ TARGET_NR_mmap2, "mmap2" , NULL, print_mmap2, print_syscall_ret_addr },
#endif
#ifdef TARGET_NR_modify_ldt
{ TARGET_NR_modify_ldt, "modify_ldt" , NULL, NULL, NULL },
#endif
#ifdef TARGET_NR_mount
-{ TARGET_NR_mount, "mount" , NULL, NULL, NULL },
+{ TARGET_NR_mount, "mount" , NULL, print_mount, NULL },
#endif
#ifdef TARGET_NR_move_pages
{ TARGET_NR_move_pages, "move_pages" , NULL, NULL, NULL },
#endif
#ifdef TARGET_NR_mprotect
-{ TARGET_NR_mprotect, "mprotect" , NULL, NULL, NULL },
+{ TARGET_NR_mprotect, "mprotect" , NULL, print_mprotect, NULL },
#endif
#ifdef TARGET_NR_mpx
{ TARGET_NR_mpx, "mpx" , NULL, NULL, NULL },
@@ -530,7 +535,7 @@
{ TARGET_NR_mq_notify, "mq_notify" , "%s(%d,%p)", NULL, NULL },
#endif
#ifdef TARGET_NR_mq_open
-{ TARGET_NR_mq_open, "mq_open" , "%s(\"/%s\",%#x,%#o,%p)", NULL, NULL },
+{ TARGET_NR_mq_open, "mq_open" , NULL, print_mq_open, NULL },
#endif
#ifdef TARGET_NR_mq_timedreceive
{ TARGET_NR_mq_timedreceive, "mq_timedreceive" , "%s(%d,%p,%d,%u,%p)", NULL, NULL },
@@ -539,7 +544,7 @@
{ TARGET_NR_mq_timedsend, "mq_timedsend" , "%s(%d,%p,%d,%u,%p)", NULL, NULL },
#endif
#ifdef TARGET_NR_mq_unlink
-{ TARGET_NR_mq_unlink, "mq_unlink" , "%s(%s)", NULL, NULL },
+{ TARGET_NR_mq_unlink, "mq_unlink" , NULL, print_mq_unlink, NULL },
#endif
#ifdef TARGET_NR_mremap
{ TARGET_NR_mremap, "mremap" , NULL, NULL, NULL },
@@ -569,16 +574,16 @@
{ TARGET_NR_munlockall, "munlockall" , NULL, NULL, NULL },
#endif
#ifdef TARGET_NR_munmap
-{ TARGET_NR_munmap, "munmap" , "%s(%p,%d)", NULL, NULL },
+{ TARGET_NR_munmap, "munmap" , NULL, print_munmap, NULL },
#endif
#ifdef TARGET_NR_nanosleep
{ TARGET_NR_nanosleep, "nanosleep" , NULL, NULL, NULL },
#endif
#ifdef TARGET_NR_fstatat64
-{ TARGET_NR_fstatat64, "fstatat64" , "%s(%d,\"%s\",%p,%#x)", NULL, NULL },
+{ TARGET_NR_fstatat64, "fstatat64" , NULL, print_fstatat64, NULL },
#endif
#ifdef TARGET_NR_newfstatat
-{ TARGET_NR_newfstatat, "newfstatat" , "%s(%d,\"%s\",%p,%#x)", NULL, NULL },
+{ TARGET_NR_newfstatat, "newfstatat" , NULL, print_newfstatat, NULL },
#endif
#ifdef TARGET_NR__newselect
{ TARGET_NR__newselect, "_newselect" , NULL, print_newselect, print_syscall_ret_newselect },
@@ -611,10 +616,10 @@
{ TARGET_NR_olduname, "olduname" , NULL, NULL, NULL },
#endif
#ifdef TARGET_NR_open
-{ TARGET_NR_open, "open" , "%s(\"%s\",%#x,%#o)", NULL, NULL },
+{ TARGET_NR_open, "open" , NULL, print_open, NULL },
#endif
#ifdef TARGET_NR_openat
-{ TARGET_NR_openat, "openat" , "%s(%d,\"%s\",%#x,%#o)", NULL, NULL },
+{ TARGET_NR_openat, "openat" , NULL, print_openat, NULL },
#endif
#ifdef TARGET_NR_osf_adjtime
{ TARGET_NR_osf_adjtime, "osf_adjtime" , NULL, NULL, NULL },
@@ -1007,10 +1012,10 @@
{ TARGET_NR_readdir, "readdir" , NULL, NULL, NULL },
#endif
#ifdef TARGET_NR_readlink
-{ TARGET_NR_readlink, "readlink" , "%s(\"%s\",%p,%d)", NULL, NULL },
+{ TARGET_NR_readlink, "readlink" , NULL, print_readlink, NULL },
#endif
#ifdef TARGET_NR_readlinkat
-{ TARGET_NR_readlinkat, "readlinkat" , "%s(%d,\"%s\",%p,%d)", NULL, NULL },
+{ TARGET_NR_readlinkat, "readlinkat" , NULL, print_readlinkat, NULL },
#endif
#ifdef TARGET_NR_readv
{ TARGET_NR_readv, "readv" , NULL, NULL, NULL },
@@ -1034,10 +1039,10 @@
{ TARGET_NR_removexattr, "removexattr" , NULL, NULL, NULL },
#endif
#ifdef TARGET_NR_rename
-{ TARGET_NR_rename, "rename" , "%s(\"%s\",\"%s\")", NULL, NULL },
+{ TARGET_NR_rename, "rename" , NULL, print_rename, NULL },
#endif
#ifdef TARGET_NR_renameat
-{ TARGET_NR_renameat, "renameat" , "%s(%d,\"%s\",%d,\"%s\")", NULL, NULL },
+{ TARGET_NR_renameat, "renameat" , NULL, print_renameat, NULL },
#endif
#ifdef TARGET_NR_request_key
{ TARGET_NR_request_key, "request_key" , NULL, NULL, NULL },
@@ -1301,16 +1306,16 @@
{ TARGET_NR_ssetmask, "ssetmask" , NULL, NULL, NULL },
#endif
#ifdef TARGET_NR_stat
-{ TARGET_NR_stat, "stat" , "%s(\"%s\",%p)", NULL, NULL },
+{ TARGET_NR_stat, "stat" , NULL, print_stat, NULL },
#endif
#ifdef TARGET_NR_stat64
-{ TARGET_NR_stat64, "stat64" , "%s(\"%s\",%p)", NULL, NULL },
+{ TARGET_NR_stat64, "stat64" , NULL, print_stat64, NULL },
#endif
#ifdef TARGET_NR_statfs
-{ TARGET_NR_statfs, "statfs" , "%s(\"%s\",%p)", NULL, NULL },
+{ TARGET_NR_statfs, "statfs" , NULL, print_statfs, NULL },
#endif
#ifdef TARGET_NR_statfs64
-{ TARGET_NR_statfs64, "statfs64" , "%s(\"%s\",%p)", NULL, NULL },
+{ TARGET_NR_statfs64, "statfs64" , NULL, print_statfs64, NULL },
#endif
#ifdef TARGET_NR_stime
{ TARGET_NR_stime, "stime" , NULL, NULL, NULL },
@@ -1334,10 +1339,10 @@
{ TARGET_NR_swapon, "swapon" , NULL, NULL, NULL },
#endif
#ifdef TARGET_NR_symlink
-{ TARGET_NR_symlink, "symlink" , "%s(\"%s\",\"%s\")", NULL, NULL },
+{ TARGET_NR_symlink, "symlink" , NULL, print_symlink, NULL },
#endif
#ifdef TARGET_NR_symlinkat
-{ TARGET_NR_symlinkat, "symlinkat" , "%s(\"%s\",%d,\"%s\")", NULL, NULL },
+{ TARGET_NR_symlinkat, "symlinkat", NULL, print_symlinkat, NULL },
#endif
#ifdef TARGET_NR_sync
{ TARGET_NR_sync, "sync" , NULL, NULL, NULL },
@@ -1427,19 +1432,19 @@
{ TARGET_NR_umask, "umask" , "%s(%#o)", NULL, NULL },
#endif
#ifdef TARGET_NR_umount
-{ TARGET_NR_umount, "umount" , "%s(\"%s\",\"%s\",\"%s\",%#x,%p)", NULL, NULL },
+{ TARGET_NR_umount, "umount" , NULL, print_umount, NULL },
#endif
#ifdef TARGET_NR_umount2
-{ TARGET_NR_umount2, "umount2" , NULL, NULL, NULL },
+{ TARGET_NR_umount2, "umount2" , NULL, print_umount2, NULL },
#endif
#ifdef TARGET_NR_uname
{ TARGET_NR_uname, "uname" , "%s(%p)", NULL, NULL },
#endif
#ifdef TARGET_NR_unlink
-{ TARGET_NR_unlink, "unlink" , "%s(\"%s\")", NULL, NULL },
+{ TARGET_NR_unlink, "unlink" , NULL, print_unlink, NULL },
#endif
#ifdef TARGET_NR_unlinkat
-{ TARGET_NR_unlinkat, "unlinkat" , "%s(%d,\"%s\",%#x)", NULL, NULL },
+{ TARGET_NR_unlinkat, "unlinkat" , NULL, print_unlinkat, NULL },
#endif
#ifdef TARGET_NR_unshare
{ TARGET_NR_unshare, "unshare" , NULL, NULL, NULL },
@@ -1469,10 +1474,10 @@
{ TARGET_NR_ustat, "ustat" , "%s(%#x,%p)", NULL, NULL },
#endif
#ifdef TARGET_NR_utime
-{ TARGET_NR_utime, "utime" , "%s(\"%s\",%p)", NULL, NULL },
+{ TARGET_NR_utime, "utime" , NULL, print_utime, NULL },
#endif
#ifdef TARGET_NR_utimes
-{ TARGET_NR_utimes, "utimes" , NULL, NULL, NULL },
+{ TARGET_NR_utimes, "utimes" , NULL, print_utimes, NULL },
#endif
#ifdef TARGET_NR_utrap_install
{ TARGET_NR_utrap_install, "utrap_install" , NULL, NULL, NULL },
@@ -1511,5 +1516,5 @@
{ TARGET_NR_writev, "writev" , "%s(%d,%p,%#x)", NULL, NULL },
#endif
#ifdef TARGET_NR_utimensat
-{ TARGET_NR_utimensat, "utimensat", "%s(%d,\"%s\",%p,%#x)", NULL, NULL },
+{ TARGET_NR_utimensat, "utimensat", NULL, print_utimensat, NULL },
#endif
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 56f2a3f..056581d 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -93,12 +93,6 @@
//#define DEBUG
-#if defined(TARGET_I386) || defined(TARGET_ARM) || defined(TARGET_SPARC) \
- || defined(TARGET_M68K) || defined(TARGET_SH4) || defined(TARGET_CRIS)
-/* 16 bit uid wrappers emulation */
-#define USE_UID16
-#endif
-
//#include <linux/msdos_fs.h>
#define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, struct linux_dirent [2])
#define VFAT_IOCTL_READDIR_SHORT _IOR('r', 2, struct linux_dirent [2])
diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h
index e2ba0bb..b79d2df 100644
--- a/linux-user/syscall_defs.h
+++ b/linux-user/syscall_defs.h
@@ -48,6 +48,12 @@
#define TARGET_IOC_NRBITS 8
#define TARGET_IOC_TYPEBITS 8
+#if defined(TARGET_I386) || defined(TARGET_ARM) || defined(TARGET_SPARC) \
+ || defined(TARGET_M68K) || defined(TARGET_SH4) || defined(TARGET_CRIS)
+ /* 16 bit uid wrappers emulation */
+#define USE_UID16
+#endif
+
#if defined(TARGET_I386) || defined(TARGET_ARM) || defined(TARGET_SH4) \
|| defined(TARGET_M68K) || defined(TARGET_CRIS)
--
1.6.2.1
^ permalink raw reply related [flat|nested] 40+ messages in thread* [Qemu-devel] [PATCH 06/21] Revived GUEST_BASE support for usermode emulation targets [v5]
2009-06-12 13:50 [Qemu-devel] [PATCH 00/21] Pending linux-user patches riku.voipio
` (4 preceding siblings ...)
2009-06-12 13:50 ` [Qemu-devel] [PATCH 05/21] linux-user: strace now handles guest strings correctly [v2] riku.voipio
@ 2009-06-12 13:50 ` riku.voipio
2009-06-14 15:28 ` Blue Swirl
2009-06-12 13:50 ` [Qemu-devel] [PATCH 07/21] linux-user: fix utimensat riku.voipio
` (15 subsequent siblings)
21 siblings, 1 reply; 40+ messages in thread
From: riku.voipio @ 2009-06-12 13:50 UTC (permalink / raw)
To: qemu-devel
From: Mika Westerberg <mika.westerberg@iki.fi>
From: Mika Westerberg <mika.westerberg@iki.fi>
- Now GUEST_BASE is dynamic and can be set from command line.
- Qemu checks /proc/sys/vm/mmap_min_addr and sets GUEST_BASE
if needed.
- Code generation supports GUEST_BASE for i386 and x86_64 hosts.
[v3]: implemented GUEST_BASE with offset mods
Using malc's advice, instead of a mov or lea, just adjust
the offset parameter of tcg_out_modrm_offset(). - Riku
[v5]: set a GUEST_BASE_MAX instead of supporting moving
to arbitary ranges
From: Mika Westerberg <mika.westerberg@iki.fi>
Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
---
configure | 9 +++++++
cpu-all.h | 7 ++++-
linux-user/elfload.c | 24 +++++++++++++++++++
linux-user/main.c | 59 +++++++++++++++++++++++++++++++++++++++++++++++
linux-user/qemu.h | 3 ++
tcg/i386/tcg-target.c | 36 ++++++++++++++++------------
tcg/x86_64/tcg-target.c | 30 +++++++++++++----------
7 files changed, 138 insertions(+), 30 deletions(-)
diff --git a/configure b/configure
index 89e7f53..11501c6 100755
--- a/configure
+++ b/configure
@@ -181,6 +181,7 @@ linux_user="no"
darwin_user="no"
bsd_user="no"
build_docs="yes"
+guest_base="no"
uname_release=""
curses="yes"
curl="yes"
@@ -465,6 +466,8 @@ for opt do
;;
--enable-bsd-user) bsd_user="yes"
;;
+ --enable-guest-base) guest_base="yes"
+ ;;
--enable-uname-release=*) uname_release="$optarg"
;;
--sparc_cpu=*)
@@ -628,6 +631,8 @@ echo " --enable-darwin-user enable all darwin usermode emulation targets"
echo " --disable-darwin-user disable all darwin usermode emulation targets"
echo " --enable-bsd-user enable all BSD usermode emulation targets"
echo " --disable-bsd-user disable all BSD usermode emulation targets"
+echo " --enable-guest-base enable GUEST_BASE support for usermode"
+echo " emulation targets"
echo " --fmod-lib path to FMOD library"
echo " --fmod-inc path to FMOD includes"
echo " --oss-lib path to OSS library"
@@ -1375,6 +1380,7 @@ echo "Documentation $build_docs"
[ ! -z "$uname_release" ] && \
echo "uname -r $uname_release"
echo "NPTL support $nptl"
+echo "GUEST_BASE $guest_base"
echo "vde support $vde"
echo "AIO support $aio"
echo "IO thread $io_thread"
@@ -2127,6 +2133,9 @@ if test "$target_user_only" = "yes" -a "$elfload32" = "yes"; then
echo "TARGET_HAS_ELFLOAD32=yes" >> $config_mak
echo "#define TARGET_HAS_ELFLOAD32 1" >> $config_h
fi
+if test "$target_user_only" = "yes" -a "$guest_base" = "yes"; then
+ echo "#define CONFIG_USE_GUEST_BASE 1" >> $config_h
+fi
if test "$target_bsd_user" = "yes" ; then
echo "CONFIG_BSD_USER=yes" >> $config_mak
echo "#define CONFIG_BSD_USER 1" >> $config_h
diff --git a/cpu-all.h b/cpu-all.h
index 8f078c4..d8603ae 100644
--- a/cpu-all.h
+++ b/cpu-all.h
@@ -625,8 +625,13 @@ static inline void stfq_be_p(void *ptr, float64 v)
/* On some host systems the guest address space is reserved on the host.
* This allows the guest address space to be offset to a convenient location.
*/
-//#define GUEST_BASE 0x20000000
+#if defined(CONFIG_USE_GUEST_BASE)
+#define GUEST_BASE_MAX 0x38000000
+extern unsigned long guest_base;
+#define GUEST_BASE guest_base
+#else
#define GUEST_BASE 0
+#endif
/* All direct uses of g2h and h2g need to go away for usermode softmmu. */
#define g2h(x) ((void *)((unsigned long)(x) + GUEST_BASE))
diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index 1839337..1a22042 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -1545,6 +1545,30 @@ int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
info->mmap = 0;
elf_entry = (abi_ulong) elf_ex.e_entry;
+#if defined(CONFIG_USE_GUEST_BASE)
+ /*
+ * In case where user has not explicitly set the guest_base, we
+ * probe here that should we set it automatically.
+ */
+ if (guest_base == 0) {
+ /*
+ * Go through ELF program header table and find out whether
+ * any of the segments drop below our current mmap_min_addr and
+ * in that case set guest_base to corresponding address.
+ */
+ for (i = 0, elf_ppnt = elf_phdata; i < elf_ex.e_phnum;
+ i++, elf_ppnt++) {
+ if (elf_ppnt->p_type != PT_LOAD)
+ continue;
+ if (HOST_PAGE_ALIGN(elf_ppnt->p_vaddr) < mmap_min_addr) {
+ guest_base = HOST_PAGE_ALIGN(mmap_min_addr);
+ qemu_log("setting guest_base=0x%lx\n", guest_base);
+ break;
+ }
+ }
+ }
+#endif /* CONFIG_USE_GUEST_BASE */
+
/* Do this so that we can load the interpreter, if need be. We will
change some of these later */
info->rss = 0;
diff --git a/linux-user/main.c b/linux-user/main.c
index 7eabd0c..0395549 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -41,6 +41,10 @@
char *exec_path;
int singlestep;
+#if defined(CONFIG_USE_GUEST_BASE)
+unsigned long mmap_min_addr = 0;
+unsigned long guest_base = 0;
+#endif
static const char *interp_prefix = CONFIG_QEMU_PREFIX;
const char *qemu_uname_release = CONFIG_UNAME_RELEASE;
@@ -2294,6 +2298,9 @@ static void usage(void)
"-E var=value sets/modifies targets environment variable(s)\n"
"-U var unsets targets environment variable(s)\n"
"-0 argv0 forces target process argv[0] to be argv0\n"
+#if defined(CONFIG_USE_GUEST_BASE)
+ "-B address set guest_base address to address\n"
+#endif
"\n"
"Debug options:\n"
"-d options activate log (logfile=%s)\n"
@@ -2468,6 +2475,10 @@ int main(int argc, char **argv, char **envp)
#endif
exit(1);
}
+#if defined(CONFIG_USE_GUEST_BASE)
+ } else if (!strcmp(r, "B")) {
+ guest_base = strtol(argv[optind++], NULL, 0);
+#endif
} else if (!strcmp(r, "drop-ld-preload")) {
(void) envlist_unsetenv(envlist, "LD_PRELOAD");
} else if (!strcmp(r, "singlestep")) {
@@ -2545,6 +2556,41 @@ int main(int argc, char **argv, char **envp)
target_environ = envlist_to_environ(envlist, NULL);
envlist_free(envlist);
+#if defined(CONFIG_USE_GUEST_BASE)
+ /*
+ * Now that page sizes are configured in cpu_init() we can do
+ * proper page alignment for guest_base.
+ */
+ guest_base = HOST_PAGE_ALIGN(guest_base);
+
+ /*
+ * Read in mmap_min_addr kernel parameter and check
+ * whether it is set to some value > 0. This value is used
+ * later on when doing mmap(2)s to calculate where guest_base
+ * is to set, if needed.
+ *
+ * When user has explicitly set the quest base, we skip this
+ * test.
+ */
+ if (guest_base == 0) {
+ FILE *fp;
+
+ if ((fp = fopen("/proc/sys/vm/mmap_min_addr", "r")) != NULL) {
+ unsigned long tmp;
+ if (fscanf(fp, "%lu", &tmp) == 1) {
+ mmap_min_addr = tmp;
+ qemu_log("kernel mmap_min_addr=%lu\n", mmap_min_addr);
+ }
+ fclose(fp);
+ }
+ }
+ if (guest_base >= GUEST_BASE_MAX) {
+ fprintf(stderr, "guest base %lu is larger than GUEST_BASE_MAX: %d \n",
+ guest_base, GUEST_BASE_MAX);
+ exit(1);
+ }
+#endif /* CONFIG_USE_GUEST_BASE */
+
/*
* Prepare copy of argv vector for target.
*/
@@ -2594,6 +2640,19 @@ int main(int argc, char **argv, char **envp)
free(target_environ);
if (qemu_log_enabled()) {
+#if defined(CONFIG_USE_GUEST_BASE)
+ if (guest_base > 0) {
+ qemu_log("guest_base is set to 0x%lx\n", guest_base);
+ qemu_log(
+ "==========================================================\n"
+ "Note that all target addresses below are given in target\n"
+ "address space which is different from host by guest_base.\n"
+ "For example: target address 0x" TARGET_ABI_FMT_lx " becomes\n"
+ "%p and so on.\n"
+ "==========================================================\n",
+ (abi_ulong)0x8000, g2h(0x8000));
+ }
+#endif
log_page_dump();
qemu_log("start_brk 0x" TARGET_ABI_FMT_lx "\n", info->start_brk);
diff --git a/linux-user/qemu.h b/linux-user/qemu.h
index e04a31c..4028953 100644
--- a/linux-user/qemu.h
+++ b/linux-user/qemu.h
@@ -133,6 +133,9 @@ void init_task_state(TaskState *ts);
void task_settid(TaskState *);
void stop_all_tasks(void);
extern const char *qemu_uname_release;
+#if defined(CONFIG_USE_GUEST_BASE)
+extern unsigned long mmap_min_addr;
+#endif
/* ??? See if we can avoid exposing so much of the loader internals. */
/*
diff --git a/tcg/i386/tcg-target.c b/tcg/i386/tcg-target.c
index e0fd434..aaec3c7 100644
--- a/tcg/i386/tcg-target.c
+++ b/tcg/i386/tcg-target.c
@@ -22,6 +22,10 @@
* THE SOFTWARE.
*/
+#ifndef CONFIG_USE_GUEST_BASE
+#define GUEST_BASE 0
+#endif
+
#ifndef NDEBUG
static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
"%eax",
@@ -572,15 +576,15 @@ static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args,
switch(opc) {
case 0:
/* movzbl */
- tcg_out_modrm_offset(s, 0xb6 | P_EXT, data_reg, r0, 0);
+ tcg_out_modrm_offset(s, 0xb6 | P_EXT, data_reg, r0, GUEST_BASE);
break;
case 0 | 4:
/* movsbl */
- tcg_out_modrm_offset(s, 0xbe | P_EXT, data_reg, r0, 0);
+ tcg_out_modrm_offset(s, 0xbe | P_EXT, data_reg, r0, GUEST_BASE);
break;
case 1:
/* movzwl */
- tcg_out_modrm_offset(s, 0xb7 | P_EXT, data_reg, r0, 0);
+ tcg_out_modrm_offset(s, 0xb7 | P_EXT, data_reg, r0, GUEST_BASE);
if (bswap) {
/* rolw $8, data_reg */
tcg_out8(s, 0x66);
@@ -590,7 +594,7 @@ static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args,
break;
case 1 | 4:
/* movswl */
- tcg_out_modrm_offset(s, 0xbf | P_EXT, data_reg, r0, 0);
+ tcg_out_modrm_offset(s, 0xbf | P_EXT, data_reg, r0, GUEST_BASE);
if (bswap) {
/* rolw $8, data_reg */
tcg_out8(s, 0x66);
@@ -603,7 +607,7 @@ static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args,
break;
case 2:
/* movl (r0), data_reg */
- tcg_out_modrm_offset(s, 0x8b, data_reg, r0, 0);
+ tcg_out_modrm_offset(s, 0x8b, data_reg, r0, GUEST_BASE);
if (bswap) {
/* bswap */
tcg_out_opc(s, (0xc8 + data_reg) | P_EXT);
@@ -619,13 +623,13 @@ static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args,
r0 = r1;
}
if (!bswap) {
- tcg_out_modrm_offset(s, 0x8b, data_reg, r0, 0);
- tcg_out_modrm_offset(s, 0x8b, data_reg2, r0, 4);
+ tcg_out_modrm_offset(s, 0x8b, data_reg, r0, GUEST_BASE);
+ tcg_out_modrm_offset(s, 0x8b, data_reg2, r0, GUEST_BASE + 4);
} else {
- tcg_out_modrm_offset(s, 0x8b, data_reg, r0, 4);
+ tcg_out_modrm_offset(s, 0x8b, data_reg, r0, GUEST_BASE + 4);
tcg_out_opc(s, (0xc8 + data_reg) | P_EXT);
- tcg_out_modrm_offset(s, 0x8b, data_reg2, r0, 0);
+ tcg_out_modrm_offset(s, 0x8b, data_reg2, r0, GUEST_BASE);
/* bswap */
tcg_out_opc(s, (0xc8 + data_reg2) | P_EXT);
}
@@ -806,7 +810,7 @@ static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args,
switch(opc) {
case 0:
/* movb */
- tcg_out_modrm_offset(s, 0x88, data_reg, r0, 0);
+ tcg_out_modrm_offset(s, 0x88, data_reg, r0, GUEST_BASE);
break;
case 1:
if (bswap) {
@@ -818,7 +822,7 @@ static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args,
}
/* movw */
tcg_out8(s, 0x66);
- tcg_out_modrm_offset(s, 0x89, data_reg, r0, 0);
+ tcg_out_modrm_offset(s, 0x89, data_reg, r0, GUEST_BASE);
break;
case 2:
if (bswap) {
@@ -828,21 +832,21 @@ static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args,
data_reg = r1;
}
/* movl */
- tcg_out_modrm_offset(s, 0x89, data_reg, r0, 0);
+ tcg_out_modrm_offset(s, 0x89, data_reg, r0, GUEST_BASE);
break;
case 3:
if (bswap) {
tcg_out_mov(s, r1, data_reg2);
/* bswap data_reg */
tcg_out_opc(s, (0xc8 + r1) | P_EXT);
- tcg_out_modrm_offset(s, 0x89, r1, r0, 0);
+ tcg_out_modrm_offset(s, 0x89, r1, r0, GUEST_BASE);
tcg_out_mov(s, r1, data_reg);
/* bswap data_reg */
tcg_out_opc(s, (0xc8 + r1) | P_EXT);
- tcg_out_modrm_offset(s, 0x89, r1, r0, 4);
+ tcg_out_modrm_offset(s, 0x89, r1, r0, GUEST_BASE + 4);
} else {
- tcg_out_modrm_offset(s, 0x89, data_reg, r0, 0);
- tcg_out_modrm_offset(s, 0x89, data_reg2, r0, 4);
+ tcg_out_modrm_offset(s, 0x89, data_reg, r0, GUEST_BASE);
+ tcg_out_modrm_offset(s, 0x89, data_reg2, r0, GUEST_BASE + 4);
}
break;
default:
diff --git a/tcg/x86_64/tcg-target.c b/tcg/x86_64/tcg-target.c
index 5378e85..6015bb5 100644
--- a/tcg/x86_64/tcg-target.c
+++ b/tcg/x86_64/tcg-target.c
@@ -22,6 +22,10 @@
* THE SOFTWARE.
*/
+#ifndef CONFIG_USE_GUEST_BASE
+#define GUEST_BASE 0
+#endif
+
#ifndef NDEBUG
static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
"%rax",
@@ -616,15 +620,15 @@ static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args,
switch(opc) {
case 0:
/* movzbl */
- tcg_out_modrm_offset(s, 0xb6 | P_EXT, data_reg, r0, 0);
+ tcg_out_modrm_offset(s, 0xb6 | P_EXT, data_reg, r0, GUEST_BASE);
break;
case 0 | 4:
/* movsbX */
- tcg_out_modrm_offset(s, 0xbe | P_EXT | rexw, data_reg, r0, 0);
+ tcg_out_modrm_offset(s, 0xbe | P_EXT | rexw, data_reg, r0, GUEST_BASE);
break;
case 1:
/* movzwl */
- tcg_out_modrm_offset(s, 0xb7 | P_EXT, data_reg, r0, 0);
+ tcg_out_modrm_offset(s, 0xb7 | P_EXT, data_reg, r0, GUEST_BASE);
if (bswap) {
/* rolw $8, data_reg */
tcg_out8(s, 0x66);
@@ -635,7 +639,7 @@ static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args,
case 1 | 4:
if (bswap) {
/* movzwl */
- tcg_out_modrm_offset(s, 0xb7 | P_EXT, data_reg, r0, 0);
+ tcg_out_modrm_offset(s, 0xb7 | P_EXT, data_reg, r0, GUEST_BASE);
/* rolw $8, data_reg */
tcg_out8(s, 0x66);
tcg_out_modrm(s, 0xc1, 0, data_reg);
@@ -645,12 +649,12 @@ static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args,
tcg_out_modrm(s, 0xbf | P_EXT | rexw, data_reg, data_reg);
} else {
/* movswX */
- tcg_out_modrm_offset(s, 0xbf | P_EXT | rexw, data_reg, r0, 0);
+ tcg_out_modrm_offset(s, 0xbf | P_EXT | rexw, data_reg, r0, GUEST_BASE);
}
break;
case 2:
/* movl (r0), data_reg */
- tcg_out_modrm_offset(s, 0x8b, data_reg, r0, 0);
+ tcg_out_modrm_offset(s, 0x8b, data_reg, r0, GUEST_BASE);
if (bswap) {
/* bswap */
tcg_out_opc(s, (0xc8 + (data_reg & 7)) | P_EXT, 0, data_reg, 0);
@@ -659,19 +663,19 @@ static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args,
case 2 | 4:
if (bswap) {
/* movl (r0), data_reg */
- tcg_out_modrm_offset(s, 0x8b, data_reg, r0, 0);
+ tcg_out_modrm_offset(s, 0x8b, data_reg, r0, GUEST_BASE);
/* bswap */
tcg_out_opc(s, (0xc8 + (data_reg & 7)) | P_EXT, 0, data_reg, 0);
/* movslq */
tcg_out_modrm(s, 0x63 | P_REXW, data_reg, data_reg);
} else {
/* movslq */
- tcg_out_modrm_offset(s, 0x63 | P_REXW, data_reg, r0, 0);
+ tcg_out_modrm_offset(s, 0x63 | P_REXW, data_reg, r0, GUEST_BASE);
}
break;
case 3:
/* movq (r0), data_reg */
- tcg_out_modrm_offset(s, 0x8b | P_REXW, data_reg, r0, 0);
+ tcg_out_modrm_offset(s, 0x8b | P_REXW, data_reg, r0, GUEST_BASE);
if (bswap) {
/* bswap */
tcg_out_opc(s, (0xc8 + (data_reg & 7)) | P_EXT | P_REXW, 0, data_reg, 0);
@@ -787,7 +791,7 @@ static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args,
switch(opc) {
case 0:
/* movb */
- tcg_out_modrm_offset(s, 0x88 | P_REXB, data_reg, r0, 0);
+ tcg_out_modrm_offset(s, 0x88 | P_REXB, data_reg, r0, GUEST_BASE);
break;
case 1:
if (bswap) {
@@ -799,7 +803,7 @@ static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args,
}
/* movw */
tcg_out8(s, 0x66);
- tcg_out_modrm_offset(s, 0x89, data_reg, r0, 0);
+ tcg_out_modrm_offset(s, 0x89, data_reg, r0, GUEST_BASE);
break;
case 2:
if (bswap) {
@@ -809,7 +813,7 @@ static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args,
data_reg = r1;
}
/* movl */
- tcg_out_modrm_offset(s, 0x89, data_reg, r0, 0);
+ tcg_out_modrm_offset(s, 0x89, data_reg, r0, GUEST_BASE);
break;
case 3:
if (bswap) {
@@ -819,7 +823,7 @@ static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args,
data_reg = r1;
}
/* movq */
- tcg_out_modrm_offset(s, 0x89 | P_REXW, data_reg, r0, 0);
+ tcg_out_modrm_offset(s, 0x89 | P_REXW, data_reg, r0, GUEST_BASE);
break;
default:
tcg_abort();
--
1.6.2.1
^ permalink raw reply related [flat|nested] 40+ messages in thread