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bsd-user/i386/target_arch_signal.h: Update mcontext_t to match FreeBSD 

Fill in target_mcontext_t to match the FreeBSD mcontex_t. Also tag the
current size of mcontext and ucontext to enable size checking for i386.

Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Warner Losh 2021-11-04 16:41:55 -06:00
parent c504713f34
commit 679041b1ef
1 changed files with 46 additions and 0 deletions
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46
bsd-user/i386/target_arch_signal.h
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@ -28,8 +28,54 @@
#define TARGET_SIGSTKSZ (MINSIGSTKSZ + 32768) /* recommended size */
typedef struct target_mcontext {
abi_ulong mc_onstack; /* XXX - sigcontext compat. */
abi_ulong mc_gs; /* machine state (struct trapframe) */
abi_ulong mc_fs;
abi_ulong mc_es;
abi_ulong mc_ds;
abi_ulong mc_edi;
abi_ulong mc_esi;
abi_ulong mc_ebp;
abi_ulong mc_isp;
abi_ulong mc_ebx;
abi_ulong mc_edx;
abi_ulong mc_ecx;
abi_ulong mc_eax;
abi_ulong mc_trapno;
abi_ulong mc_err;
abi_ulong mc_eip;
abi_ulong mc_cs;
abi_ulong mc_eflags;
abi_ulong mc_esp;
abi_ulong mc_ss;
int32_t mc_len; /* sizeof(mcontext_t) */
#define _MC_FPFMT_NODEV 0x10000 /* device not present or configured */
#define _MC_FPFMT_387 0x10001
#define _MC_FPFMT_XMM 0x10002
int32_t mc_fpformat;
#define _MC_FPOWNED_NONE 0x20000 /* FP state not used */
#define _MC_FPOWNED_FPU 0x20001 /* FP state came from FPU */
#define _MC_FPOWNED_PCB 0x20002 /* FP state came from PCB */
int32_t mc_ownedfp;
abi_ulong mc_flags;
/*
* See <machine/npx.h> for the internals of mc_fpstate[].
*/
int32_t mc_fpstate[128] __aligned(16);
abi_ulong mc_fsbase;
abi_ulong mc_gsbase;
abi_ulong mc_xfpustate;
abi_ulong mc_xfpustate_len;
int32_t mc_spare2[4];
} target_mcontext_t;
#define TARGET_MCONTEXT_SIZE 640
#define TARGET_UCONTEXT_SIZE 704
#include "target_os_ucontext.h"
struct target_sigframe {