diff options
Diffstat (limited to '')
| -rw-r--r-- | linux-user/hexagon/signal.c | 19 | ||||
| -rw-r--r-- | linux-user/hexagon/target_signal.h | 2 |
2 files changed, 19 insertions, 2 deletions
diff --git a/linux-user/hexagon/signal.c b/linux-user/hexagon/signal.c index c7f0bf6b92..74e61739a0 100644 --- a/linux-user/hexagon/signal.c +++ b/linux-user/hexagon/signal.c @@ -162,6 +162,11 @@ void setup_rt_frame(int sig, struct target_sigaction *ka, setup_ucontext(&frame->uc, env, set); tswap_siginfo(&frame->info, info); + /* + * The on-stack signal trampoline is no longer executed; + * however, the libgcc signal frame unwinding code checks + * for the presence of these two numeric magic values. + */ install_sigtramp(frame->tramp); env->gpr[HEX_REG_PC] = ka->_sa_handler; @@ -171,8 +176,7 @@ void setup_rt_frame(int sig, struct target_sigaction *ka, frame_addr + offsetof(struct target_rt_sigframe, info); env->gpr[HEX_REG_R02] = frame_addr + offsetof(struct target_rt_sigframe, uc); - env->gpr[HEX_REG_LR] = - frame_addr + offsetof(struct target_rt_sigframe, tramp); + env->gpr[HEX_REG_LR] = default_rt_sigreturn; return; @@ -271,3 +275,14 @@ badframe: force_sig(TARGET_SIGSEGV); return 0; } + +void setup_sigtramp(abi_ulong sigtramp_page) +{ + uint32_t *tramp = lock_user(VERIFY_WRITE, sigtramp_page, 4 * 2, 0); + assert(tramp != NULL); + + default_rt_sigreturn = sigtramp_page; + install_sigtramp(tramp); + + unlock_user(tramp, sigtramp_page, 4 * 2); +} diff --git a/linux-user/hexagon/target_signal.h b/linux-user/hexagon/target_signal.h index 345cf1cbb8..9e0223d322 100644 --- a/linux-user/hexagon/target_signal.h +++ b/linux-user/hexagon/target_signal.h @@ -31,4 +31,6 @@ typedef struct target_sigaltstack { #include "../generic/signal.h" +#define TARGET_ARCH_HAS_SIGTRAMP_PAGE 1 + #endif /* TARGET_SIGNAL_H */ |