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| author | Christophe Lyon <christophe.lyon@linaro.org> | 2021-04-14 14:22:44 +0000 |
|---|---|---|
| committer | Christophe Lyon <christophe.lyon@linaro.org> | 2021-04-14 14:22:44 +0000 |
| commit | d5c137cf529398b9bd7ea1c34605aa4b735b8b11 (patch) | |
| tree | 560a4eda2ca71f0f18a2b372265e80504b6ae82a | |
| parent | 666c20f65ebe79576949e989640d938928daad05 (diff) | |
| download | binutils-d5c137cf529398b9bd7ea1c34605aa4b735b8b11.zip binutils-d5c137cf529398b9bd7ea1c34605aa4b735b8b11.tar.gz binutils-d5c137cf529398b9bd7ea1c34605aa4b735b8b11.tar.bz2 | |
ARM/FDPIC: Add support to unwind thumb2 signal trampoline
2021-04-14 Mickael Guene <mickael.guene@st.com>
Christophe Lyon <christophe.lyon@st.com>
* gdb/arm-linux-tdep.c (FDPIC_T2_LDR_R12_WITH_FUNCDESC): New
define.
(FDPIC_T2_LDR_R9_WITH_GOT): New define.
(FDPIC_T2_LDR_PC_WITH_RESTORER): New define.
(arm_linux_thumb2_sigreturn_tramp_frame_fdpic): New.
(arm_linux_init_abi): Add thumb2 signal handler.
| -rw-r--r-- | gdb/arm-linux-tdep.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/gdb/arm-linux-tdep.c b/gdb/arm-linux-tdep.c index 3da1011..4ec4561 100644 --- a/gdb/arm-linux-tdep.c +++ b/gdb/arm-linux-tdep.c @@ -257,6 +257,10 @@ static const char arm_linux_thumb2_le_breakpoint[] = { 0xf0, 0xf7, 0x00, 0xa0 }; #define FDPIC_LDR_R9_WITH_GOT 0xe59c9004 #define FDPIC_LDR_PC_WITH_RESTORER 0xe59cf000 +#define FDPIC_T2_LDR_R12_WITH_FUNCDESC 0xc008f8df +#define FDPIC_T2_LDR_R9_WITH_GOT 0x9004f8dc +#define FDPIC_T2_LDR_PC_WITH_RESTORER 0xf000f8dc + static void arm_linux_sigtramp_cache (struct frame_info *this_frame, struct trad_frame_cache *this_cache, @@ -511,6 +515,18 @@ static struct tramp_frame arm_linux_sigreturn_tramp_frame_fdpic = { arm_linux_sigreturn_fdpic_init }; +static struct tramp_frame arm_linux_thumb2_sigreturn_tramp_frame_fdpic = { + SIGTRAMP_FRAME, + 4, + { + { FDPIC_T2_LDR_R12_WITH_FUNCDESC, -1 }, + { FDPIC_T2_LDR_R9_WITH_GOT, -1 }, + { FDPIC_T2_LDR_PC_WITH_RESTORER, -1 }, + { TRAMP_SENTINEL_INSN } + }, + arm_linux_sigreturn_fdpic_init +}; + /* Core file and register set support. */ #define ARM_LINUX_SIZEOF_GREGSET (18 * INT_REGISTER_SIZE) @@ -1312,6 +1328,8 @@ arm_linux_init_abi (struct gdbarch_info info, &arm_kernel_linux_restart_syscall_tramp_frame); tramp_frame_prepend_unwinder (gdbarch, &arm_linux_sigreturn_tramp_frame_fdpic); + tramp_frame_prepend_unwinder (gdbarch, + &arm_linux_thumb2_sigreturn_tramp_frame_fdpic); /* Core file support. */ set_gdbarch_regset_from_core_section (gdbarch, |