* arm-wince-tdep.c (arm_wince_skip_main_prologue): New.
(arm_wince_init_abi): Register it as gdbarch_skip_main_prologue callback.
This commit is contained in:
parent
7437790a92
commit
d7117c03b0
@ -1,3 +1,9 @@
|
||||
2009-07-05 Pedro Alves <pedro@codesourcery.com>
|
||||
|
||||
* arm-wince-tdep.c (arm_wince_skip_main_prologue): New.
|
||||
(arm_wince_init_abi): Register it as gdbarch_skip_main_prologue
|
||||
callback.
|
||||
|
||||
2009-06-29 Tristan Gingold <gingold@adacore.com>
|
||||
|
||||
* i386-darwin-tdep.c (amd64_darwin_thread_state_reg_offset)
|
||||
|
@ -77,6 +77,40 @@ arm_pe_skip_trampoline_code (struct frame_info *frame, CORE_ADDR pc)
|
||||
return arm_skip_stub (frame, pc);
|
||||
}
|
||||
|
||||
/* GCC emits a call to __gccmain in the prologue of main.
|
||||
|
||||
The function below examines the code pointed at by PC and checks to
|
||||
see if it corresponds to a call to __gccmain. If so, it returns
|
||||
the address of the instruction following that call. Otherwise, it
|
||||
simply returns PC. */
|
||||
|
||||
CORE_ADDR
|
||||
arm_wince_skip_main_prologue (struct gdbarch *gdbarch, CORE_ADDR pc)
|
||||
{
|
||||
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
|
||||
ULONGEST this_instr;
|
||||
|
||||
this_instr = read_memory_unsigned_integer (pc, 4, byte_order);
|
||||
|
||||
/* bl offset <__gccmain> */
|
||||
if ((this_instr & 0xfff00000) == 0xeb000000)
|
||||
{
|
||||
#define sign_extend(V, N) \
|
||||
(((long) (V) ^ (1L << ((N) - 1))) - (1L << ((N) - 1)))
|
||||
|
||||
long offset = sign_extend (this_instr & 0x000fffff, 23) << 2;
|
||||
CORE_ADDR call_dest = (pc + 8 + offset) & 0xffffffffU;
|
||||
struct minimal_symbol *s = lookup_minimal_symbol_by_pc (call_dest);
|
||||
|
||||
if (s != NULL
|
||||
&& SYMBOL_LINKAGE_NAME (s) != NULL
|
||||
&& strcmp (SYMBOL_LINKAGE_NAME (s), "__gccmain") == 0)
|
||||
pc += 4;
|
||||
}
|
||||
|
||||
return pc;
|
||||
}
|
||||
|
||||
static void
|
||||
arm_wince_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
||||
{
|
||||
@ -102,6 +136,9 @@ arm_wince_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
||||
|
||||
/* Single stepping. */
|
||||
set_gdbarch_software_single_step (gdbarch, arm_software_single_step);
|
||||
|
||||
/* Skip call to __gccmain that gcc places in main. */
|
||||
set_gdbarch_skip_main_prologue (gdbarch, arm_wince_skip_main_prologue);
|
||||
}
|
||||
|
||||
static enum gdb_osabi
|
||||
|
Loading…
Reference in New Issue
Block a user