haraldwolff/qemu-patch-raspberry4
1
0
Fork 0
Code Issues Pull requests Packages Projects Releases Wiki Activity

linux-user: Save/restore fpu registers to signal context on sh4

Browse source 
As "todo" comment in source code.
And modify restore_sigcontext() to have three args as kernel's does.

Signed-off-by: Takashi YOSHII <takasi-y@ops.dti.ne.jp>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
takasi-y@ops.dti.ne.jp 2010-02-18 00:46:45 +09:00 committed by Aurelien Jarno
parent 597c0212a7
commit d871443692
1 changed files with 21 additions and 8 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

29
linux-user/signal.c
View file

@ -2812,6 +2812,7 @@ static int setup_sigcontext(struct target_sigcontext *sc,
CPUState *regs, unsigned long mask)
{
int err = 0;
int i;
#define COPY(x) err |= __put_user(regs->x, &sc->sc_##x)
COPY(gregs[0]); COPY(gregs[1]);
@ -2827,7 +2828,11 @@ static int setup_sigcontext(struct target_sigcontext *sc,
COPY(sr); COPY(pc);
#undef COPY
/* todo: save FPU registers here */
for (i=0; i<16; i++) {
err |= __put_user(regs->fregs[i], &sc->sc_fpregs[i]);
}
err |= __put_user(regs->fpscr, &sc->sc_fpscr);
err |= __put_user(regs->fpul, &sc->sc_fpul);
/* non-iBCS2 extensions.. */
err |= __put_user(mask, &sc->oldmask);
@ -2835,10 +2840,11 @@ static int setup_sigcontext(struct target_sigcontext *sc,
return err;
}
static int restore_sigcontext(CPUState *regs,
struct target_sigcontext *sc)
static int restore_sigcontext(CPUState *regs, struct target_sigcontext *sc,
target_ulong *r0_p)
{
unsigned int err = 0;
int i;
#define COPY(x) err |= __get_user(regs->x, &sc->sc_##x)
COPY(gregs[1]);
@ -2854,9 +2860,14 @@ static int restore_sigcontext(CPUState *regs,
COPY(sr); COPY(pc);
#undef COPY
/* todo: restore FPU registers here */
for (i=0; i<16; i++) {
err |= __get_user(regs->fregs[i], &sc->sc_fpregs[i]);
}
err |= __get_user(regs->fpscr, &sc->sc_fpscr);
err |= __get_user(regs->fpul, &sc->sc_fpul);
regs->tra = -1; /* disable syscall checks */
err |= __get_user(*r0_p, &sc->sc_gregs[0]);
return err;
}
@ -2980,6 +2991,7 @@ long do_sigreturn(CPUState *regs)
abi_ulong frame_addr;
sigset_t blocked;
target_sigset_t target_set;
target_ulong r0;
int i;
int err = 0;
@ -3001,11 +3013,11 @@ long do_sigreturn(CPUState *regs)
target_to_host_sigset_internal(&blocked, &target_set);
sigprocmask(SIG_SETMASK, &blocked, NULL);
if (restore_sigcontext(regs, &frame->sc))
if (restore_sigcontext(regs, &frame->sc, &r0))
goto badframe;
unlock_user_struct(frame, frame_addr, 0);
return regs->gregs[0];
return r0;
badframe:
unlock_user_struct(frame, frame_addr, 0);
@ -3018,6 +3030,7 @@ long do_rt_sigreturn(CPUState *regs)
struct target_rt_sigframe *frame;
abi_ulong frame_addr;
sigset_t blocked;
target_ulong r0;
#if defined(DEBUG_SIGNAL)
fprintf(stderr, "do_rt_sigreturn\n");
@ -3029,7 +3042,7 @@ long do_rt_sigreturn(CPUState *regs)
target_to_host_sigset(&blocked, &frame->uc.uc_sigmask);
sigprocmask(SIG_SETMASK, &blocked, NULL);
if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &r0))
goto badframe;
if (do_sigaltstack(frame_addr +
@ -3038,7 +3051,7 @@ long do_rt_sigreturn(CPUState *regs)
goto badframe;
unlock_user_struct(frame, frame_addr, 0);
return regs->gregs[0];
return r0;
badframe:
unlock_user_struct(frame, frame_addr, 0);