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| author | Richard Henderson | 2021-10-04 23:21:39 +0200 |
|---|---|---|
| committer | Richard Henderson | 2021-10-04 23:21:39 +0200 |
| commit | e7ab6584784dbbd701f0ffe7b29918f44dcd98fd (patch) | |
| tree | e5ce7b4f7397c9c426440f06d809e0898fd32278 /linux-user/hppa/target_signal.h | |
| parent | Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging (diff) | |
| parent | tests/tcg/multiarch: Re-enable signals test for most guests (diff) | |
| download | qemu-e7ab6584784dbbd701f0ffe7b29918f44dcd98fd.tar.gz qemu-e7ab6584784dbbd701f0ffe7b29918f44dcd98fd.tar.xz qemu-e7ab6584784dbbd701f0ffe7b29918f44dcd98fd.zip | |
Merge remote-tracking branch 'remotes/vivier/tags/linux-user-for-6.2-pull-request' into staging
Pull request linux-user 20211004
Move signal trampolines to new page
# gpg: Signature made Mon 04 Oct 2021 12:43:53 AM PDT
# gpg: using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C
# gpg: issuer "laurent@vivier.eu"
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full]
# gpg: aka "Laurent Vivier <laurent@vivier.eu>" [full]
# gpg: aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full]
* remotes/vivier/tags/linux-user-for-6.2-pull-request: (26 commits)
tests/tcg/multiarch: Re-enable signals test for most guests
linux-user: Remove default for TARGET_ARCH_HAS_SIGTRAMP_PAGE
linux-user/xtensa: Implement setup_sigtramp
linux-user/sparc: Implement setup_sigtramp
linux-user/sh4: Implement setup_sigtramp
linux-user/s390x: Implement setup_sigtramp
linux-user/riscv: Implement setup_sigtramp
linux-user/ppc: Implement setup_sigtramp
linux-user/ppc: Simplify encode_trampoline
linux-user/openrisc: Implement setup_sigtramp
linux-user/nios2: Document non-use of setup_sigtramp
linux-user/mips: Implement setup_sigtramp
linux-user/mips: Tidy install_sigtramp
linux-user/microblaze: Implement setup_sigtramp
linux-user/m68k: Implement setup_sigtramp
linux-user/x86_64: Raise SIGSEGV if SA_RESTORER not set
linux-user/i386: Implement setup_sigtramp
linux-user/hppa: Document non-use of setup_sigtramp
linux-user/hexagon: Implement setup_sigtramp
linux-user/cris: Implement setup_sigtramp
...
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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 7f525362e9..d558119ee7 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 */ |