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| author | Tiezhu Yang <yangtiezhu@loongson.cn> | 2022-06-25 09:21:16 +0800 |
|---|---|---|
| committer | Tiezhu Yang <yangtiezhu@loongson.cn> | 2022-06-25 10:12:55 +0800 |
| commit | af6e3f77e939ecf85e18720925a4d8f355f90ee1 (patch) | |
| tree | d773780616d692f0fe28dbd40839354f544531b4 /gdb/loongarch-tdep.c | |
| parent | 0757a50396e3638434f806aec2ee8c8f79a7026c (diff) | |
| download | gdb-af6e3f77e939ecf85e18720925a4d8f355f90ee1.zip gdb-af6e3f77e939ecf85e18720925a4d8f355f90ee1.tar.gz gdb-af6e3f77e939ecf85e18720925a4d8f355f90ee1.tar.bz2 | |
gdb: LoongArch: Implement loongarch_linux_syscall_next_pc()
When FRAME is at a syscall instruction, return the PC of the next
instruction to be executed.
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Diffstat (limited to 'gdb/loongarch-tdep.c')
| -rw-r--r-- | gdb/loongarch-tdep.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gdb/loongarch-tdep.c b/gdb/loongarch-tdep.c index 3c02449..f2f4e3b 100644 --- a/gdb/loongarch-tdep.c +++ b/gdb/loongarch-tdep.c @@ -224,6 +224,8 @@ loongarch_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc) static CORE_ADDR loongarch_next_pc (struct regcache *regcache, CORE_ADDR cur_pc) { + struct gdbarch *gdbarch = regcache->arch (); + loongarch_gdbarch_tdep *tdep = (loongarch_gdbarch_tdep *) gdbarch_tdep (gdbarch); insn_t insn = loongarch_fetch_instruction (cur_pc); size_t insn_len = loongarch_insn_length (insn); CORE_ADDR next_pc = cur_pc + insn_len; @@ -307,6 +309,11 @@ loongarch_next_pc (struct regcache *regcache, CORE_ADDR cur_pc) if (rj != 0) next_pc = cur_pc + loongarch_decode_imm ("0:5|10:16<<2", insn, 1); } + else if ((insn & 0xffff8000) == 0x002b0000) /* syscall */ + { + if (tdep->syscall_next_pc != nullptr) + next_pc = tdep->syscall_next_pc (get_current_frame ()); + } return next_pc; } |