diff options
Diffstat (limited to 'linux-user/hppa/target_signal.h')
| -rw-r--r-- | linux-user/hppa/target_signal.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/linux-user/hppa/target_signal.h b/linux-user/hppa/target_signal.h index 7f52536..d558119 100644 --- a/linux-user/hppa/target_signal.h +++ b/linux-user/hppa/target_signal.h @@ -71,4 +71,18 @@ typedef struct target_sigaltstack { /* mask for all SS_xxx flags */ #define TARGET_SS_FLAG_BITS TARGET_SS_AUTODISARM +/* + * We cannot use a bare sigtramp page for hppa-linux. + * + * Unlike other guests where we use the instructions at PC to validate + * an offset from SP, the hppa libgcc signal frame fallback unwinding uses + * the PC address itself to find the frame. This is due to the fact that + * the hppa grows the stack upward, and the frame is of unknown size. + * + * TODO: We should be able to use a VDSO to address this, by providing + * proper unwind info for the sigtramp code, at which point the fallback + * unwinder will not be used. + */ +#define TARGET_ARCH_HAS_SIGTRAMP_PAGE 0 + #endif /* HPPA_TARGET_SIGNAL_H */ |