ce48b21007
This patch extends the floating point save and restore code to use the VSX load/stores when VSX is available. This will make FP context save/restore marginally slower on FP only code, when VSX is available, as it has to load/store 128bits rather than just 64bits. Mixing FP, VMX and VSX code will get constant architected state. The signals interface is extended to enable access to VSR 0-31 doubleword 1 after discussions with tool chain maintainers. Backward compatibility is maintained. The ptrace interface is also extended to allow access to VSR 0-31 full registers. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
140 lines
3.4 KiB
C
140 lines
3.4 KiB
C
#ifndef _PPC64_PPC32_H
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#define _PPC64_PPC32_H
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#include <linux/compat.h>
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#include <asm/siginfo.h>
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#include <asm/signal.h>
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/*
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* Data types and macros for providing 32b PowerPC support.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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/* These are here to support 32-bit syscalls on a 64-bit kernel. */
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typedef struct compat_siginfo {
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int si_signo;
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int si_errno;
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int si_code;
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union {
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int _pad[SI_PAD_SIZE32];
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/* kill() */
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struct {
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compat_pid_t _pid; /* sender's pid */
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compat_uid_t _uid; /* sender's uid */
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} _kill;
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/* POSIX.1b timers */
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struct {
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compat_timer_t _tid; /* timer id */
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int _overrun; /* overrun count */
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compat_sigval_t _sigval; /* same as below */
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int _sys_private; /* not to be passed to user */
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} _timer;
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/* POSIX.1b signals */
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struct {
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compat_pid_t _pid; /* sender's pid */
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compat_uid_t _uid; /* sender's uid */
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compat_sigval_t _sigval;
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} _rt;
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/* SIGCHLD */
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struct {
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compat_pid_t _pid; /* which child */
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compat_uid_t _uid; /* sender's uid */
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int _status; /* exit code */
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compat_clock_t _utime;
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compat_clock_t _stime;
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} _sigchld;
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/* SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGEMT */
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struct {
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unsigned int _addr; /* faulting insn/memory ref. */
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} _sigfault;
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/* SIGPOLL */
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struct {
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int _band; /* POLL_IN, POLL_OUT, POLL_MSG */
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int _fd;
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} _sigpoll;
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} _sifields;
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} compat_siginfo_t;
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#define __old_sigaction32 old_sigaction32
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struct __old_sigaction32 {
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compat_uptr_t sa_handler;
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compat_old_sigset_t sa_mask;
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unsigned int sa_flags;
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compat_uptr_t sa_restorer; /* not used by Linux/SPARC yet */
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};
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struct sigaction32 {
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compat_uptr_t sa_handler; /* Really a pointer, but need to deal with 32 bits */
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unsigned int sa_flags;
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compat_uptr_t sa_restorer; /* Another 32 bit pointer */
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compat_sigset_t sa_mask; /* A 32 bit mask */
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};
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typedef struct sigaltstack_32 {
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unsigned int ss_sp;
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int ss_flags;
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compat_size_t ss_size;
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} stack_32_t;
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struct pt_regs32 {
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unsigned int gpr[32];
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unsigned int nip;
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unsigned int msr;
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unsigned int orig_gpr3; /* Used for restarting system calls */
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unsigned int ctr;
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unsigned int link;
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unsigned int xer;
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unsigned int ccr;
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unsigned int mq; /* 601 only (not used at present) */
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unsigned int trap; /* Reason for being here */
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unsigned int dar; /* Fault registers */
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unsigned int dsisr;
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unsigned int result; /* Result of a system call */
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};
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struct sigcontext32 {
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unsigned int _unused[4];
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int signal;
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compat_uptr_t handler;
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unsigned int oldmask;
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compat_uptr_t regs; /* 4 byte pointer to the pt_regs32 structure. */
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};
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struct mcontext32 {
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elf_gregset_t32 mc_gregs;
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elf_fpregset_t mc_fregs;
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unsigned int mc_pad[2];
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elf_vrregset_t32 mc_vregs __attribute__((__aligned__(16)));
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elf_vsrreghalf_t32 mc_vsregs __attribute__((__aligned__(16)));
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};
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struct ucontext32 {
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unsigned int uc_flags;
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unsigned int uc_link;
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stack_32_t uc_stack;
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int uc_pad[7];
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compat_uptr_t uc_regs; /* points to uc_mcontext field */
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compat_sigset_t uc_sigmask; /* mask last for extensibility */
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/* glibc has 1024-bit signal masks, ours are 64-bit */
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int uc_maskext[30];
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int uc_pad2[3];
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struct mcontext32 uc_mcontext;
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};
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#endif /* _PPC64_PPC32_H */
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