8cd1def4b8
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> [mpe: Use standard include guard naming for syscalls_32.h] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220921065605.1051927-17-rmclure@linux.ibm.com
61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
#ifndef _ASM_POWERPC_SYSCALLS_32_H
|
|
#define _ASM_POWERPC_SYSCALLS_32_H
|
|
|
|
#include <linux/compat.h>
|
|
#include <asm/siginfo.h>
|
|
#include <asm/signal.h>
|
|
|
|
/*
|
|
* Data types and macros for providing 32b PowerPC support.
|
|
*/
|
|
|
|
/* These are here to support 32-bit syscalls on a 64-bit kernel. */
|
|
|
|
struct pt_regs32 {
|
|
unsigned int gpr[32];
|
|
unsigned int nip;
|
|
unsigned int msr;
|
|
unsigned int orig_gpr3; /* Used for restarting system calls */
|
|
unsigned int ctr;
|
|
unsigned int link;
|
|
unsigned int xer;
|
|
unsigned int ccr;
|
|
unsigned int mq; /* 601 only (not used at present) */
|
|
unsigned int trap; /* Reason for being here */
|
|
unsigned int dar; /* Fault registers */
|
|
unsigned int dsisr;
|
|
unsigned int result; /* Result of a system call */
|
|
};
|
|
|
|
struct sigcontext32 {
|
|
unsigned int _unused[4];
|
|
int signal;
|
|
compat_uptr_t handler;
|
|
unsigned int oldmask;
|
|
compat_uptr_t regs; /* 4 byte pointer to the pt_regs32 structure. */
|
|
};
|
|
|
|
struct mcontext32 {
|
|
elf_gregset_t32 mc_gregs;
|
|
elf_fpregset_t mc_fregs;
|
|
unsigned int mc_pad[2];
|
|
elf_vrregset_t32 mc_vregs __attribute__((__aligned__(16)));
|
|
elf_vsrreghalf_t32 mc_vsregs __attribute__((__aligned__(16)));
|
|
};
|
|
|
|
struct ucontext32 {
|
|
unsigned int uc_flags;
|
|
unsigned int uc_link;
|
|
compat_stack_t uc_stack;
|
|
int uc_pad[7];
|
|
compat_uptr_t uc_regs; /* points to uc_mcontext field */
|
|
compat_sigset_t uc_sigmask; /* mask last for extensibility */
|
|
/* glibc has 1024-bit signal masks, ours are 64-bit */
|
|
int uc_maskext[30];
|
|
int uc_pad2[3];
|
|
struct mcontext32 uc_mcontext;
|
|
};
|
|
|
|
#endif // _ASM_POWERPC_SYSCALLS_32_H
|