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From: Rohan McLure <rmclure@linux.ibm.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Rohan McLure <rmclure@linux.ibm.com>
Subject: [PATCH v4 08/20] powerpc: Include all arch-specific syscall prototypes
Date: Wed, 24 Aug 2022 12:05:36 +1000	[thread overview]
Message-ID: <20220824020548.62625-9-rmclure@linux.ibm.com> (raw)
In-Reply-To: <20220824020548.62625-1-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>
---
V1 -> V2: Explicitly include prototypes.
V2 -> V3: Remove extraneous #include <asm/compat.h> and ppc_fallocate
prototype. Rename header.
---
 arch/powerpc/include/asm/syscalls.h          | 90 +++++++++++++-----
 .../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, 70 insertions(+), 24 deletions(-)

diff --git a/arch/powerpc/include/asm/syscalls.h b/arch/powerpc/include/asm/syscalls.h
index 3e3aff0835a6..91417dee534e 100644
--- a/arch/powerpc/include/asm/syscalls.h
+++ b/arch/powerpc/include/asm/syscalls.h
@@ -8,45 +8,91 @@
 #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;
 
+#ifndef CONFIG_ARCH_HAS_SYSCALL_WRAPPER
+
+/*
+ * PowerPC architecture-specific syscalls
+ */
+
+long sys_rtas(struct rtas_args __user *uargs);
+long sys_ni_syscall(void);
+
+#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 */
+
+/* Parameters are reordered for powerpc to avoid padding */
+long sys_ppc_fadvise64_64(int fd, int advice,
+			  u32 offset_high, u32 offset_low,
+			  u32 len_high, u32 len_low);
+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);
 
-int compat_sys_ftruncate64(unsigned int fd, u32 reg4, unsigned long len1,
-			   unsigned long len2);
+/* Architecture-specific implementations in sys_ppc32.c */
 
+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);
-#endif
+#endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */
 
 #endif /* __KERNEL__ */
 #endif /* __ASM_POWERPC_SYSCALLS_H */
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


  parent reply	other threads:[~2022-08-24  2:11 UTC|newest]

Thread overview: 53+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-08-24  2:05 [PATCH v4 00/20] powerpc: Syscall wrapper and register clearing Rohan McLure
2022-08-24  2:05 ` [PATCH v4 01/20] powerpc: Remove asmlinkage from syscall handler definitions Rohan McLure
2022-08-25  7:04   ` Andrew Donnellan
2022-09-12  8:20   ` Nicholas Piggin
2022-08-24  2:05 ` [PATCH v4 02/20] powerpc: Use generic fallocate compatibility syscall Rohan McLure
2022-09-12  8:38   ` Nicholas Piggin
2022-09-12  9:57     ` Arnd Bergmann
2022-09-12 11:00       ` Christophe Leroy
2022-09-12 11:07         ` Arnd Bergmann
2022-08-24  2:05 ` [PATCH v4 03/20] powerpc/32: Remove powerpc select specialisation Rohan McLure
2022-09-12  9:03   ` Nicholas Piggin
2022-09-15  4:36     ` Rohan McLure
2022-08-24  2:05 ` [PATCH v4 04/20] powerpc: Provide do_ppc64_personality helper Rohan McLure
2022-09-12  9:26   ` Nicholas Piggin
2022-08-24  2:05 ` [PATCH v4 05/20] powerpc: Remove direct call to personality syscall handler Rohan McLure
2022-09-12  9:42   ` Nicholas Piggin
2022-08-24  2:05 ` [PATCH v4 06/20] powerpc: Remove direct call to mmap2 syscall handlers Rohan McLure
2022-09-12  9:47   ` Nicholas Piggin
2022-09-15  5:06     ` Rohan McLure
2022-08-24  2:05 ` [PATCH v4 07/20] powerpc: Adopt SYSCALL_DEFINE for arch-specific " Rohan McLure
2022-09-12 10:04   ` Nicholas Piggin
2022-08-24  2:05 ` Rohan McLure [this message]
2022-09-12 10:33   ` [PATCH v4 08/20] powerpc: Include all arch-specific syscall prototypes Nicholas Piggin
2022-09-13  7:09     ` Rohan McLure
2022-08-24  2:05 ` [PATCH v4 09/20] powerpc: Enable compile-time check for syscall handlers Rohan McLure
2022-09-12 10:42   ` Nicholas Piggin
2022-09-13  2:29     ` Michael Ellerman
2022-08-24  2:05 ` [PATCH v4 10/20] powerpc: Use common syscall handler type Rohan McLure
2022-09-12 10:56   ` Nicholas Piggin
2022-09-15  5:45     ` Rohan McLure
2022-09-16  1:02       ` Nicholas Piggin
2022-08-24  2:05 ` [PATCH v4 11/20] powerpc: Add ZEROIZE_GPRS macros for register clears Rohan McLure
2022-09-12 11:09   ` Nicholas Piggin
2022-09-15  5:47     ` Rohan McLure
2022-08-24  2:05 ` [PATCH v4 12/20] Revert "powerpc/syscall: Save r3 in regs->orig_r3" Rohan McLure
2022-09-12 11:14   ` Nicholas Piggin
2022-08-24  2:05 ` [PATCH v4 13/20] powerpc: Provide syscall wrapper Rohan McLure
2022-09-12 11:26   ` Nicholas Piggin
2022-08-24  2:05 ` [PATCH v4 14/20] powerpc/64s: Clear/restore caller gprs in syscall interrupt/return Rohan McLure
2022-09-12 11:47   ` Nicholas Piggin
2022-08-24  2:05 ` [PATCH v4 15/20] powerpc/64s: Use {ZEROIZE,SAVE,REST}_GPRS macros in sc, scv 0 handlers Rohan McLure
2022-09-12 11:49   ` Nicholas Piggin
2022-08-24  2:05 ` [PATCH v4 16/20] powerpc/32: Clarify interrupt restores with REST_GPR macro in entry_32.S Rohan McLure
2022-08-24  2:05 ` [PATCH v4 17/20] powerpc/64e: Clarify register saves and clears with {SAVE,ZEROIZE}_GPRS Rohan McLure
2022-09-12 12:17   ` Nicholas Piggin
2022-08-24  2:05 ` [PATCH v4 18/20] powerpc/64s: Fix comment on interrupt handler prologue Rohan McLure
2022-09-12 11:51   ` Nicholas Piggin
2022-08-24  2:05 ` [PATCH v4 19/20] powerpc/64s: Clear gprs on interrupt routine entry in Book3S Rohan McLure
2022-09-12 12:15   ` Nicholas Piggin
2022-09-15  6:55     ` Rohan McLure
2022-09-16  0:43       ` Nicholas Piggin
2022-08-24  2:05 ` [PATCH v4 20/20] powerpc/64e: Clear gprs on interrupt routine entry Rohan McLure
2022-09-12  0:55 ` [PATCH v4 00/20] powerpc: Syscall wrapper and register clearing Rohan McLure

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