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| author | John Baldwin <jhb@FreeBSD.org> | 2017-10-05 09:50:01 -0700 |
|---|---|---|
| committer | John Baldwin <jhb@FreeBSD.org> | 2017-10-05 09:50:01 -0700 |
| commit | a80a647180bf92692e0f01efe7b323afe7d317c9 (patch) | |
| tree | b0f81a66babbe750e7c6eafdde5c579397a682ed /gdb | |
| parent | 6d5be5d6b8b4412e65bc037472aa2e727c25ccf5 (diff) | |
| download | gdb-a80a647180bf92692e0f01efe7b323afe7d317c9.zip gdb-a80a647180bf92692e0f01efe7b323afe7d317c9.tar.gz gdb-a80a647180bf92692e0f01efe7b323afe7d317c9.tar.bz2 | |
Add a signal frame unwinder for FreeBSD/mipsn32.
The N32 signal frame uses an identical layout to N64, so reuse the N64
handler. The N32 signal trampoline does use one different instruction
relative to N64, so a separate tramp_frame is required.
gdb/ChangeLog:
* mips-fbsd-tdep.c (MIPS_INST_ADDIU_A0_SP_N32): Define.
(mipsn32_fbsd_sigframe): Define.
(mips_fbsd_init_abi): Install mipsn32_fbsd_sigframe unwinder
for FreeBSD/mipsn32.
Diffstat (limited to 'gdb')
| -rw-r--r-- | gdb/ChangeLog | 7 | ||||
| -rw-r--r-- | gdb/mips-fbsd-tdep.c | 18 |
2 files changed, 25 insertions, 0 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 2ffa23f..024664f 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,5 +1,12 @@ 2017-10-05 John Baldwin <jhb@FreeBSD.org> + * mips-fbsd-tdep.c (MIPS_INST_ADDIU_A0_SP_N32): Define. + (mipsn32_fbsd_sigframe): Define. + (mips_fbsd_init_abi): Install mipsn32_fbsd_sigframe unwinder + for FreeBSD/mipsn32. + +2017-10-05 John Baldwin <jhb@FreeBSD.org> + * fbsd-tdep.c (fbsd_print_auxv_entry): Handle AT_EHDRFLAGS and AT_HWCAP. diff --git a/gdb/mips-fbsd-tdep.c b/gdb/mips-fbsd-tdep.c index 05545e3..b1578d0 100644 --- a/gdb/mips-fbsd-tdep.c +++ b/gdb/mips-fbsd-tdep.c @@ -426,6 +426,23 @@ mips64_fbsd_sigframe_init (const struct tramp_frame *self, trad_frame_set_id (cache, frame_id_build (sp, func)); } +#define MIPS_INST_ADDIU_A0_SP_N32 (0x27a40000 \ + + N64_SIGFRAME_UCONTEXT_OFFSET) + +static const struct tramp_frame mipsn32_fbsd_sigframe = +{ + SIGTRAMP_FRAME, + MIPS_INSN32_SIZE, + { + { MIPS_INST_ADDIU_A0_SP_N32, -1 }, /* addiu a0, sp, SIGF_UC */ + { MIPS_INST_LI_V0_SIGRETURN, -1 }, /* li v0, SYS_sigreturn */ + { MIPS_INST_SYSCALL, -1 }, /* syscall */ + { MIPS_INST_BREAK, -1 }, /* break */ + { TRAMP_SENTINEL_INSN, -1 } + }, + mips64_fbsd_sigframe_init +}; + #define MIPS_INST_DADDIU_A0_SP_N64 (0x67a40000 \ + N64_SIGFRAME_UCONTEXT_OFFSET) @@ -519,6 +536,7 @@ mips_fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) tramp_frame_prepend_unwinder (gdbarch, &mips_fbsd_sigframe); break; case MIPS_ABI_N32: + tramp_frame_prepend_unwinder (gdbarch, &mipsn32_fbsd_sigframe); break; case MIPS_ABI_N64: tramp_frame_prepend_unwinder (gdbarch, &mips64_fbsd_sigframe); |