From: Rohan McLure <rmclure@linux.ibm.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Rohan McLure <rmclure@linux.ibm.com>,
Nicholas Piggin <npiggin@gmail.com>
Subject: [PATCH v6 16/25] powerpc: Include all arch-specific syscall prototypes
Date: Wed, 21 Sep 2022 16:55:56 +1000 [thread overview]
Message-ID: <20220921065605.1051927-17-rmclure@linux.ibm.com> (raw)
In-Reply-To: <20220921065605.1051927-1-rmclure@linux.ibm.com>
Forward declare all syscall handler prototypes where a generic prototype
is not provided in either linux/syscalls.h or linux/compat.h in
asm/syscalls.h. This is required for compile-time type-checking for
syscall handlers, which is implemented later in this series.
32-bit compatibility syscall handlers are expressed in terms of types in
ppc32.h. Expose this header globally.
Signed-off-by: Rohan McLure <rmclure@linux.ibm.com>
Acked-by: Nicholas Piggin <npiggin@gmail.com>
---
V2: Explicitly include prototypes.
V3: Remove extraneous #include <asm/compat.h> and ppc_fallocate
prototype. Rename header.
V5: Clean. Elaborate comment on long long munging. Remove
prototype hiding conditional on SYSCALL_WRAPPER.
---
arch/powerpc/include/asm/syscalls.h | 97 ++++++++++++++----
.../ppc32.h => include/asm/syscalls_32.h} | 0
arch/powerpc/kernel/signal_32.c | 2 +-
arch/powerpc/perf/callchain_32.c | 2 +-
4 files changed, 77 insertions(+), 24 deletions(-)
diff --git a/arch/powerpc/include/asm/syscalls.h b/arch/powerpc/include/asm/syscalls.h
index 525d2aa0c8ca..5d106acf7906 100644
--- a/arch/powerpc/include/asm/syscalls.h
+++ b/arch/powerpc/include/asm/syscalls.h
@@ -8,6 +8,14 @@
#include <linux/types.h>
#include <linux/compat.h>
+#ifdef CONFIG_PPC64
+#include <asm/syscalls_32.h>
+#endif
+#include <asm/unistd.h>
+#include <asm/ucontext.h>
+
+struct rtas_args;
+
/*
* long long munging:
* The 32 bit ABI passes long longs in an odd even register pair.
@@ -20,44 +28,89 @@
#define merge_64(high, low) ((u64)high << 32) | low
#endif
-struct rtas_args;
+long sys_ni_syscall(void);
+
+/*
+ * PowerPC architecture-specific syscalls
+ */
+
+long sys_rtas(struct rtas_args __user *uargs);
+
+#ifdef CONFIG_PPC64
+long sys_ppc64_personality(unsigned long personality);
+#ifdef CONFIG_COMPAT
+long compat_sys_ppc64_personality(unsigned long personality);
+#endif /* CONFIG_COMPAT */
+#endif /* CONFIG_PPC64 */
+long sys_swapcontext(struct ucontext __user *old_ctx,
+ struct ucontext __user *new_ctx, long ctx_size);
long sys_mmap(unsigned long addr, size_t len,
unsigned long prot, unsigned long flags,
unsigned long fd, off_t offset);
long sys_mmap2(unsigned long addr, size_t len,
unsigned long prot, unsigned long flags,
unsigned long fd, unsigned long pgoff);
-long sys_ppc64_personality(unsigned long personality);
-long sys_rtas(struct rtas_args __user *uargs);
-long sys_ppc_fadvise64_64(int fd, int advice, u32 offset_high, u32 offset_low,
- u32 len_high, u32 len_low);
+long sys_switch_endian(void);
-#ifdef CONFIG_COMPAT
-unsigned long compat_sys_mmap2(unsigned long addr, size_t len,
- unsigned long prot, unsigned long flags,
- unsigned long fd, unsigned long pgoff);
-
-compat_ssize_t compat_sys_pread64(unsigned int fd, char __user *ubuf, compat_size_t count,
- u32 reg6, u32 pos1, u32 pos2);
+#ifdef CONFIG_PPC32
+long sys_sigreturn(void);
+long sys_debug_setcontext(struct ucontext __user *ctx, int ndbg,
+ struct sig_dbg_op __user *dbg);
+#endif
-compat_ssize_t compat_sys_pwrite64(unsigned int fd, const char __user *ubuf, compat_size_t count,
- u32 reg6, u32 pos1, u32 pos2);
+long sys_rt_sigreturn(void);
-compat_ssize_t compat_sys_readahead(int fd, u32 r4, u32 offset1, u32 offset2, u32 count);
+long sys_subpage_prot(unsigned long addr,
+ unsigned long len, u32 __user *map);
-int compat_sys_truncate64(const char __user *path, u32 reg4,
- unsigned long len1, unsigned long len2);
+#ifdef CONFIG_COMPAT
+long compat_sys_swapcontext(struct ucontext32 __user *old_ctx,
+ struct ucontext32 __user *new_ctx,
+ int ctx_size);
+long compat_sys_old_getrlimit(unsigned int resource,
+ struct compat_rlimit __user *rlim);
+long compat_sys_sigreturn(void);
+long compat_sys_rt_sigreturn(void);
+#endif /* CONFIG_COMPAT */
-int compat_sys_ftruncate64(unsigned int fd, u32 reg4, unsigned long len1,
- unsigned long len2);
+/*
+ * Architecture specific signatures required by long long munging:
+ * The 32 bit ABI passes long longs in an odd even register pair.
+ * The following signatures provide a machine long parameter for
+ * each register that will be supplied. The implementation is
+ * responsible for combining parameter pairs.
+ */
+#ifdef CONFIG_COMPAT
+long compat_sys_mmap2(unsigned long addr, size_t len,
+ unsigned long prot, unsigned long flags,
+ unsigned long fd, unsigned long pgoff);
+long compat_sys_ppc_pread64(unsigned int fd,
+ char __user *ubuf, compat_size_t count,
+ u32 reg6, u32 pos1, u32 pos2);
+long compat_sys_ppc_pwrite64(unsigned int fd,
+ const char __user *ubuf, compat_size_t count,
+ u32 reg6, u32 pos1, u32 pos2);
+long compat_sys_ppc_readahead(int fd, u32 r4,
+ u32 offset1, u32 offset2, u32 count);
+long compat_sys_ppc_truncate64(const char __user *path, u32 reg4,
+ unsigned long len1, unsigned long len2);
+long compat_sys_ppc_ftruncate64(unsigned int fd, u32 reg4,
+ unsigned long len1, unsigned long len2);
long compat_sys_ppc32_fadvise64(int fd, u32 unused, u32 offset1, u32 offset2,
size_t len, int advice);
+long compat_sys_ppc_sync_file_range2(int fd, unsigned int flags,
+ unsigned int offset1,
+ unsigned int offset2,
+ unsigned int nbytes1,
+ unsigned int nbytes2);
+#endif /* CONFIG_COMPAT */
-long compat_sys_sync_file_range2(int fd, unsigned int flags,
- unsigned int offset1, unsigned int offset2,
- unsigned int nbytes1, unsigned int nbytes2);
+#if defined(CONFIG_PPC32) || defined(CONFIG_COMPAT)
+long sys_ppc_fadvise64_64(int fd, int advice,
+ u32 offset_high, u32 offset_low,
+ u32 len_high, u32 len_low);
#endif
#endif /* __KERNEL__ */
diff --git a/arch/powerpc/kernel/ppc32.h b/arch/powerpc/include/asm/syscalls_32.h
similarity index 100%
rename from arch/powerpc/kernel/ppc32.h
rename to arch/powerpc/include/asm/syscalls_32.h
diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c
index 157a7403e3eb..c114c7f25645 100644
--- a/arch/powerpc/kernel/signal_32.c
+++ b/arch/powerpc/kernel/signal_32.c
@@ -43,7 +43,7 @@
#include <asm/tm.h>
#include <asm/asm-prototypes.h>
#ifdef CONFIG_PPC64
-#include "ppc32.h"
+#include <asm/syscalls_32.h>
#include <asm/unistd.h>
#else
#include <asm/ucontext.h>
diff --git a/arch/powerpc/perf/callchain_32.c b/arch/powerpc/perf/callchain_32.c
index b83c47b7947f..ea8cfe3806dc 100644
--- a/arch/powerpc/perf/callchain_32.c
+++ b/arch/powerpc/perf/callchain_32.c
@@ -19,7 +19,7 @@
#include "callchain.h"
#ifdef CONFIG_PPC64
-#include "../kernel/ppc32.h"
+#include <asm/syscalls_32.h>
#else /* CONFIG_PPC64 */
#define __SIGNAL_FRAMESIZE32 __SIGNAL_FRAMESIZE
--
2.34.1
next prev parent reply other threads:[~2022-09-21 7:08 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-21 6:55 [PATCH v6 00/25] powerpc: Syscall wrapper and register clearing Rohan McLure
2022-09-21 6:55 ` [PATCH v6 01/25] powerpc: Remove asmlinkage from syscall handler definitions Rohan McLure
2022-09-21 6:55 ` [PATCH v6 02/25] powerpc: Save caller r3 prior to system_call_exception Rohan McLure
2022-09-21 6:55 ` [PATCH v6 03/25] powerpc: Add ZEROIZE_GPRS macros for register clears Rohan McLure
2022-09-21 6:55 ` [PATCH v6 04/25] powerpc/64s: Use {ZEROIZE,SAVE,REST}_GPRS macros in sc, scv 0 handlers Rohan McLure
2022-09-21 6:55 ` [PATCH v6 05/25] powerpc/32: Clarify interrupt restores with REST_GPR macro in entry_32.S Rohan McLure
2022-09-21 6:55 ` [PATCH v6 06/25] powerpc/64e: Clarify register saves and clears with {SAVE,ZEROIZE}_GPRS Rohan McLure
2022-09-21 6:55 ` [PATCH v6 07/25] powerpc/64s: Fix comment on interrupt handler prologue Rohan McLure
2022-09-21 6:55 ` [PATCH v6 08/25] powerpc: Fix fallocate and fadvise64_64 compat parameter combination Rohan McLure
2022-09-21 6:55 ` [PATCH v6 09/25] asm-generic: compat: Support BE for long long args in 32-bit ABIs Rohan McLure
2022-10-31 13:23 ` [PATCH] asm-generic: compat: fix compat_arg_u64 and compat_arg_u64_dual Andreas Schwab
2022-11-01 12:25 ` Michael Ellerman
2022-11-03 8:20 ` Christophe Leroy
2022-11-03 8:48 ` Arnd Bergmann
2022-09-21 6:55 ` [PATCH v6 10/25] powerpc: Use generic fallocate compatibility syscall Rohan McLure
2022-09-21 6:55 ` [PATCH v6 11/25] powerpc/32: Remove powerpc select specialisation Rohan McLure
2022-09-21 6:55 ` [PATCH v6 12/25] powerpc: Remove direct call to personality syscall handler Rohan McLure
2022-09-21 6:55 ` [PATCH v6 13/25] powerpc: Remove direct call to mmap2 syscall handlers Rohan McLure
2022-09-28 12:15 ` Michael Ellerman
2022-09-28 13:00 ` Arnd Bergmann
2022-09-30 13:19 ` Michael Ellerman
2022-09-30 14:09 ` Arnd Bergmann
2022-09-21 6:55 ` [PATCH v6 14/25] powerpc: Provide do_ppc64_personality helper Rohan McLure
2022-09-21 6:55 ` [PATCH v6 15/25] powerpc: Adopt SYSCALL_DEFINE for arch-specific syscall handlers Rohan McLure
2022-09-21 6:55 ` Rohan McLure [this message]
2022-09-21 6:55 ` [PATCH v6 17/25] powerpc: Enable compile-time check for " Rohan McLure
2022-09-21 6:55 ` [PATCH v6 18/25] powerpc: Use common syscall handler type Rohan McLure
2022-09-21 6:55 ` [PATCH v6 19/25] powerpc: Remove high-order word clearing on compat syscall entry Rohan McLure
2022-09-23 7:40 ` Nicholas Piggin
2022-09-28 11:56 ` Michael Ellerman
2022-09-21 6:56 ` [PATCH v6 20/25] powerpc: Change system_call_exception calling convention Rohan McLure
2022-09-23 7:43 ` Nicholas Piggin
2022-09-21 6:56 ` [PATCH v6 21/25] powerpc: Provide syscall wrapper Rohan McLure
2022-09-23 7:50 ` Nicholas Piggin
2022-10-30 15:34 ` Andreas Schwab
2022-10-30 15:50 ` Andreas Schwab
2022-10-30 19:43 ` Arnd Bergmann
2022-10-30 20:05 ` Andreas Schwab
2022-10-31 3:09 ` Michael Ellerman
2022-10-31 14:47 ` [PATCH] powerpc/32: fix syscall wrappers with 64-bit arguments Andreas Schwab
2022-10-31 19:37 ` Arnd Bergmann
2022-11-01 12:25 ` Michael Ellerman
2022-09-21 6:56 ` [PATCH v6 22/25] powerpc/64s: Clear user GPRs in syscall interrupt entry Rohan McLure
2022-09-23 8:02 ` Nicholas Piggin
2022-10-31 23:22 ` Rohan McLure
2022-09-21 6:56 ` [PATCH v6 23/25] powerpc/64: Add INTERRUPT_SANITIZE_REGISTERS Kconfig Rohan McLure
2022-09-21 6:56 ` [PATCH v6 24/25] powerpc/64s: Clear gprs on interrupt routine entry in Book3S Rohan McLure
2022-09-21 6:56 ` [PATCH v6 25/25] powerpc/64e: Clear gprs on interrupt routine entry on Book3E Rohan McLure
2022-10-04 13:24 ` [PATCH v6 00/25] powerpc: Syscall wrapper and register clearing Michael Ellerman
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20220921065605.1051927-17-rmclure@linux.ibm.com \
--to=rmclure@linux.ibm.com \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=npiggin@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).