diff options
Diffstat (limited to 'gdb/arm-tdep.c')
| -rw-r--r-- | gdb/arm-tdep.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/gdb/arm-tdep.c b/gdb/arm-tdep.c index a60f497..7f20267 100644 --- a/gdb/arm-tdep.c +++ b/gdb/arm-tdep.c @@ -2272,6 +2272,23 @@ arm_store_struct_return (CORE_ADDR addr, CORE_ADDR sp) write_register (ARM_A1_REGNUM, addr); } +static int +arm_get_longjmp_target (CORE_ADDR *pc) +{ + CORE_ADDR jb_addr; + char buf[INT_REGISTER_RAW_SIZE]; + struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); + + jb_addr = read_register (ARM_A1_REGNUM); + + if (target_read_memory (jb_addr + tdep->jb_pc * tdep->jb_elt_size, buf, + INT_REGISTER_RAW_SIZE)) + return 0; + + *pc = extract_address (buf, INT_REGISTER_RAW_SIZE); + return 1; +} + /* Return non-zero if the PC is inside a thumb call thunk. */ int @@ -2775,7 +2792,9 @@ arm_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) "arm_gdbarch_init: bad byte order for float format"); } + /* This should be low enough for everything. */ tdep->lowest_pc = 0x20; + tdep->jb_pc = -1; /* Longjump support not enabled by default. */ set_gdbarch_use_generic_dummy_frames (gdbarch, 0); @@ -2904,6 +2923,9 @@ arm_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) /* Now we have tuned the configuration, set a few final things, based on what the OS ABI has told us. */ + if (tdep->jb_pc >= 0) + set_gdbarch_get_longjmp_target (gdbarch, arm_get_longjmp_target); + /* We can't use SIZEOF_FRAME_SAVED_REGS here, since that still references the old architecture vector, not the one we are building here. */ |