mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 07:36:56 +07:00
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
|
|
#define _PPC64_PPC32_H
|
|
|
|
#include <linux/compat.h>
|
|
#include <asm/siginfo.h>
|
|
#include <asm/signal.h>
|
|
|
|
/*
|
|
* Data types and macros for providing 32b PowerPC support.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*/
|
|
|
|
/* These are here to support 32-bit syscalls on a 64-bit kernel. */
|
|
|
|
typedef struct compat_siginfo {
|
|
int si_signo;
|
|
int si_errno;
|
|
int si_code;
|
|
|
|
union {
|
|
int _pad[SI_PAD_SIZE32];
|
|
|
|
/* kill() */
|
|
struct {
|
|
compat_pid_t _pid; /* sender's pid */
|
|
compat_uid_t _uid; /* sender's uid */
|
|
} _kill;
|
|
|
|
/* POSIX.1b timers */
|
|
struct {
|
|
compat_timer_t _tid; /* timer id */
|
|
int _overrun; /* overrun count */
|
|
compat_sigval_t _sigval; /* same as below */
|
|
int _sys_private; /* not to be passed to user */
|
|
} _timer;
|
|
|
|
/* POSIX.1b signals */
|
|
struct {
|
|
compat_pid_t _pid; /* sender's pid */
|
|
compat_uid_t _uid; /* sender's uid */
|
|
compat_sigval_t _sigval;
|
|
} _rt;
|
|
|
|
/* SIGCHLD */
|
|
struct {
|
|
compat_pid_t _pid; /* which child */
|
|
compat_uid_t _uid; /* sender's uid */
|
|
int _status; /* exit code */
|
|
compat_clock_t _utime;
|
|
compat_clock_t _stime;
|
|
} _sigchld;
|
|
|
|
/* SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGEMT */
|
|
struct {
|
|
unsigned int _addr; /* faulting insn/memory ref. */
|
|
} _sigfault;
|
|
|
|
/* SIGPOLL */
|
|
struct {
|
|
int _band; /* POLL_IN, POLL_OUT, POLL_MSG */
|
|
int _fd;
|
|
} _sigpoll;
|
|
} _sifields;
|
|
} compat_siginfo_t;
|
|
|
|
#define __old_sigaction32 old_sigaction32
|
|
|
|
struct __old_sigaction32 {
|
|
compat_uptr_t sa_handler;
|
|
compat_old_sigset_t sa_mask;
|
|
unsigned int sa_flags;
|
|
compat_uptr_t sa_restorer; /* not used by Linux/SPARC yet */
|
|
};
|
|
|
|
|
|
|
|
struct sigaction32 {
|
|
compat_uptr_t sa_handler; /* Really a pointer, but need to deal with 32 bits */
|
|
unsigned int sa_flags;
|
|
compat_uptr_t sa_restorer; /* Another 32 bit pointer */
|
|
compat_sigset_t sa_mask; /* A 32 bit mask */
|
|
};
|
|
|
|
typedef struct sigaltstack_32 {
|
|
unsigned int ss_sp;
|
|
int ss_flags;
|
|
compat_size_t ss_size;
|
|
} stack_32_t;
|
|
|
|
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;
|
|
stack_32_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 /* _PPC64_PPC32_H */
|