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ARM: linux-user: Restore iWMMXT state from ucontext on sigreturn 

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@nokia.com>
This commit is contained in:
Peter Maydell 2010-11-24 15:20:08 +00:00 committed by Riku Voipio
parent 08e11256f6
commit a59d69da66
1 changed files with 30 additions and 0 deletions
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30
linux-user/signal.c
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@ -1602,6 +1602,30 @@ static abi_ulong *restore_sigframe_v2_vfp(CPUState *env, abi_ulong *regspace)
return (abi_ulong*)(vfpframe + 1);
}
static abi_ulong *restore_sigframe_v2_iwmmxt(CPUState *env, abi_ulong *regspace)
{
int i;
abi_ulong magic, sz;
struct target_iwmmxt_sigframe *iwmmxtframe;
iwmmxtframe = (struct target_iwmmxt_sigframe *)regspace;
__get_user(magic, &iwmmxtframe->magic);
__get_user(sz, &iwmmxtframe->size);
if (magic != TARGET_IWMMXT_MAGIC || sz != sizeof(*iwmmxtframe)) {
return 0;
}
for (i = 0; i < 16; i++) {
__get_user(env->iwmmxt.regs[i], &iwmmxtframe->regs[i]);
}
__get_user(env->vfp.xregs[ARM_IWMMXT_wCSSF], &iwmmxtframe->wcssf);
__get_user(env->vfp.xregs[ARM_IWMMXT_wCASF], &iwmmxtframe->wcssf);
__get_user(env->vfp.xregs[ARM_IWMMXT_wCGR0], &iwmmxtframe->wcgr0);
__get_user(env->vfp.xregs[ARM_IWMMXT_wCGR1], &iwmmxtframe->wcgr1);
__get_user(env->vfp.xregs[ARM_IWMMXT_wCGR2], &iwmmxtframe->wcgr2);
__get_user(env->vfp.xregs[ARM_IWMMXT_wCGR3], &iwmmxtframe->wcgr3);
return (abi_ulong*)(iwmmxtframe + 1);
}
static int do_sigframe_return_v2(CPUState *env, target_ulong frame_addr,
struct target_ucontext_v2 *uc)
{
@ -1622,6 +1646,12 @@ static int do_sigframe_return_v2(CPUState *env, target_ulong frame_addr,
return 1;
}
}
if (arm_feature(env, ARM_FEATURE_IWMMXT)) {
regspace = restore_sigframe_v2_iwmmxt(env, regspace);
if (!regspace) {
return 1;
}
}
if (do_sigaltstack(frame_addr + offsetof(struct target_ucontext_v2, tuc_stack), 0, get_sp_from_cpustate(env)) == -EFAULT)
return 1;