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Workaround WSL not supporting x87 in ucontext_t

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This commit is contained in:
Justine Tunney 2022-11-02 03:03:32 -07:00
parent d6ff4c754e
commit fae0c0286f
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GPG key ID: BE714B4575D6E328
8 changed files with 13 additions and 11 deletions
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2
libc/calls/ntcontext2linux.c
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@ -23,7 +23,6 @@
privileged void _ntcontext2linux(ucontext_t *ctx, const struct NtContext *cr) {
if (!cr) return;
ctx->uc_flags = cr->EFlags;
ctx->uc_mcontext.eflags = cr->EFlags;
ctx->uc_mcontext.rax = cr->Rax;
ctx->uc_mcontext.rbx = cr->Rbx;
@ -51,7 +50,6 @@ privileged void _ntcontext2linux(ucontext_t *ctx, const struct NtContext *cr) {
privileged void _ntlinux2context(struct NtContext *cr, const ucontext_t *ctx) {
if (!cr) return;
cr->EFlags = ctx->uc_flags;
cr->EFlags = ctx->uc_mcontext.eflags;
cr->Rax = ctx->uc_mcontext.rax;
cr->Rbx = ctx->uc_mcontext.rbx;

1
libc/calls/sigenter-freebsd.c
View file

@ -51,7 +51,6 @@ privileged void __sigenter_freebsd(int sig, struct siginfo_freebsd *freebsdinfo,
g.uc.uc_stack.ss_sp = ctx->uc_stack.ss_sp;
g.uc.uc_stack.ss_size = ctx->uc_stack.ss_size;
g.uc.uc_stack.ss_flags = ctx->uc_stack.ss_flags;
g.uc.uc_flags = ctx->uc_flags;
__repmovsb(&g.uc.uc_sigmask, &ctx->uc_sigmask,
MIN(sizeof(g.uc.uc_sigmask), sizeof(ctx->uc_sigmask)));
g.uc.uc_mcontext.r8 = ctx->uc_mcontext.mc_r8;

1
libc/calls/sigenter-netbsd.c
View file

@ -47,7 +47,6 @@ privileged void __sigenter_netbsd(int sig, struct siginfo_netbsd *si,
__repstosb(&uc, 0, sizeof(uc));
__siginfo2cosmo(&si2, (void *)si);
uc.uc_mcontext.fpregs = &uc.__fpustate;
uc.uc_flags = ctx->uc_flags;
uc.uc_stack.ss_sp = ctx->uc_stack.ss_sp;
uc.uc_stack.ss_size = ctx->uc_stack.ss_size;
uc.uc_stack.ss_flags = ctx->uc_stack.ss_flags;

1
libc/calls/sigenter-xnu.c
View file

@ -471,7 +471,6 @@ privileged void __sigenter_xnu(void *fn, int infostyle, int sig,
} else {
__repstosb(&g, 0, sizeof(g));
if (xnuctx) {
g.uc.uc_flags = xnuctx->uc_onstack ? SA_ONSTACK : 0;
g.uc.uc_sigmask.__bits[0] = xnuctx->uc_sigmask;
g.uc.uc_sigmask.__bits[1] = 0;
g.uc.uc_stack.ss_sp = xnuctx->uc_stack.ss_sp;

2
libc/calls/ucontext.h
View file

@ -72,7 +72,7 @@ struct MachineContext {
typedef struct MachineContext mcontext_t;
struct ucontext {
uint64_t uc_flags;
uint64_t uc_flags; /* don't use this */
struct ucontext *uc_link;
stack_t uc_stack;
mcontext_t uc_mcontext; /* use this */