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| author | Timothy E Baldwin <T.E.Baldwin99@members.leeds.ac.uk> | 2016-09-09 19:35:58 +0100 |
|---|---|---|
| committer | Riku Voipio <riku.voipio@linaro.org> | 2016-09-21 22:17:02 +0300 |
| commit | 45eafb4d32ced9ff1dcb3800c89f8beaf47b61cc (patch) | |
| tree | ff0e7ef92529043bb2e2186eabcd15e7c9481bb1 /linux-user/signal.c | |
| parent | 5ea2fc84da1bffce749c9d0848f5336def2818bb (diff) | |
| download | qemu-45eafb4d32ced9ff1dcb3800c89f8beaf47b61cc.zip qemu-45eafb4d32ced9ff1dcb3800c89f8beaf47b61cc.tar.gz qemu-45eafb4d32ced9ff1dcb3800c89f8beaf47b61cc.tar.bz2 | |
linux-user: Fix incorrect offset of tuc_stack in ARM do_sigframe_return_v2
struct target_ucontext_v2 is not at the begining of the signal frame,
therefore do_sigaltstack was being passed bogus arguments.
As the offset depends on the type of signal frame fixed by passing in the
beginning of the context from do_sigreturn_v2 and do_rt_sigreturn_v2.
Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Timothy Edward Baldwin <T.E.Baldwin99@members.leeds.ac.uk>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Diffstat (limited to 'linux-user/signal.c')
| -rw-r--r-- | linux-user/signal.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/linux-user/signal.c b/linux-user/signal.c index 900ee35..e4eea69 100644 --- a/linux-user/signal.c +++ b/linux-user/signal.c @@ -2071,7 +2071,8 @@ static abi_ulong *restore_sigframe_v2_iwmmxt(CPUARMState *env, return (abi_ulong*)(iwmmxtframe + 1); } -static int do_sigframe_return_v2(CPUARMState *env, target_ulong frame_addr, +static int do_sigframe_return_v2(CPUARMState *env, + target_ulong context_addr, struct target_ucontext_v2 *uc) { sigset_t host_set; @@ -2098,8 +2099,11 @@ static int do_sigframe_return_v2(CPUARMState *env, target_ulong frame_addr, } } - if (do_sigaltstack(frame_addr + offsetof(struct target_ucontext_v2, tuc_stack), 0, get_sp_from_cpustate(env)) == -EFAULT) + if (do_sigaltstack(context_addr + + offsetof(struct target_ucontext_v2, tuc_stack), + 0, get_sp_from_cpustate(env)) == -EFAULT) { return 1; + } #if 0 /* Send SIGTRAP if we're single-stepping */ @@ -2130,7 +2134,10 @@ static long do_sigreturn_v2(CPUARMState *env) goto badframe; } - if (do_sigframe_return_v2(env, frame_addr, &frame->uc)) { + if (do_sigframe_return_v2(env, + frame_addr + + offsetof(struct sigframe_v2, uc), + &frame->uc)) { goto badframe; } @@ -2217,7 +2224,10 @@ static long do_rt_sigreturn_v2(CPUARMState *env) goto badframe; } - if (do_sigframe_return_v2(env, frame_addr, &frame->uc)) { + if (do_sigframe_return_v2(env, + frame_addr + + offsetof(struct rt_sigframe_v2, uc), + &frame->uc)) { goto badframe; } |