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| author | Laurent Vivier <laurent@vivier.eu> | 2018-04-11 21:23:47 +0200 |
|---|---|---|
| committer | Laurent Vivier <laurent@vivier.eu> | 2018-05-03 18:29:15 +0200 |
| commit | 465e237bf7cb6a9d8f9f137508125a14efcce1d6 (patch) | |
| tree | 1eaf5f3576d7f080b2a664466582975ae81ae986 /linux-user/i386 | |
| parent | e8fa72957419c11984608062c7dcb204a6003a06 (diff) | |
| download | qemu-465e237bf7cb6a9d8f9f137508125a14efcce1d6.zip qemu-465e237bf7cb6a9d8f9f137508125a14efcce1d6.tar.gz qemu-465e237bf7cb6a9d8f9f137508125a14efcce1d6.tar.bz2 | |
linux-user: introduce target_sigsp() and target_save_altstack()
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180411192347.30228-1-laurent@vivier.eu>
Diffstat (limited to 'linux-user/i386')
| -rw-r--r-- | linux-user/i386/signal.c | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/linux-user/i386/signal.c b/linux-user/i386/signal.c index 4a190e6..e9a23a2 100644 --- a/linux-user/i386/signal.c +++ b/linux-user/i386/signal.c @@ -283,16 +283,14 @@ get_sigframe(struct target_sigaction *ka, CPUX86State *env, size_t frame_size) unsigned long esp; /* Default to using normal stack */ - esp = env->regs[R_ESP]; + esp = get_sp_from_cpustate(env); #ifdef TARGET_X86_64 esp -= 128; /* this is the redzone */ #endif /* This is the X/Open sanctioned signal stack switching. */ if (ka->sa_flags & TARGET_SA_ONSTACK) { - if (sas_ss_flags(esp) == 0) { - esp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; - } + esp = target_sigsp(esp, ka); } else { #ifndef TARGET_X86_64 /* This is the legacy signal stack switching. */ @@ -404,11 +402,7 @@ void setup_rt_frame(int sig, struct target_sigaction *ka, /* Create the ucontext. */ __put_user(0, &frame->uc.tuc_flags); __put_user(0, &frame->uc.tuc_link); - __put_user(target_sigaltstack_used.ss_sp, &frame->uc.tuc_stack.ss_sp); - __put_user(sas_ss_flags(get_sp_from_cpustate(env)), - &frame->uc.tuc_stack.ss_flags); - __put_user(target_sigaltstack_used.ss_size, - &frame->uc.tuc_stack.ss_size); + target_save_altstack(&frame->uc.tuc_stack, env); setup_sigcontext(&frame->uc.tuc_mcontext, &frame->fpstate, env, set->sig[0], frame_addr + offsetof(struct rt_sigframe, fpstate)); |