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| author | Pierre Muller <muller@sourceware.org> | 2010-09-27 22:05:40 +0000 |
|---|---|---|
| committer | Pierre Muller <muller@sourceware.org> | 2010-09-27 22:05:40 +0000 |
| commit | 99e24b906565b6ba736dc535086373e7c246bfe0 (patch) | |
| tree | 9abfe364f15d4d440e6d46d320a825143a4b54c7 /gdb | |
| parent | 6a44904e978701a0f9dd17bcfbbd2de07be14e89 (diff) | |
| download | gdb-99e24b906565b6ba736dc535086373e7c246bfe0.zip gdb-99e24b906565b6ba736dc535086373e7c246bfe0.tar.gz gdb-99e24b906565b6ba736dc535086373e7c246bfe0.tar.bz2 | |
* amd64-windows-tdep.c (amd64_skip_main_prologue): New function.
(amd64_windows_init_abi): Register amd64_skip_main_prologue as gdbarch
skip_main_prologue method.
Diffstat (limited to 'gdb')
| -rw-r--r-- | gdb/ChangeLog | 6 | ||||
| -rw-r--r-- | gdb/amd64-windows-tdep.c | 33 |
2 files changed, 39 insertions, 0 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 8f91dd1..440f141 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,9 @@ +2010-09-27 Pierre Muller <muller@ics.u-strasbg.fr> + + * amd64-windows-tdep.c (amd64_skip_main_prologue): New function. + (amd64_windows_init_abi): Register amd64_skip_main_prologue as gdbarch + skip_main_prologue method. + 2010-09-27 Tom Tromey <tromey@redhat.com> * dwarf2read.c (dwarf2_read_index): Only allow version 3. diff --git a/gdb/amd64-windows-tdep.c b/gdb/amd64-windows-tdep.c index 05d0824..0a44562 100644 --- a/gdb/amd64-windows-tdep.c +++ b/gdb/amd64-windows-tdep.c @@ -122,6 +122,38 @@ amd64_windows_return_value (struct gdbarch *gdbarch, struct type *func_type, } } +/* Check that the code pointed to by PC corresponds to a call to + __main, skip it if so. Return PC otherwise. */ + +static CORE_ADDR +amd64_skip_main_prologue (struct gdbarch *gdbarch, CORE_ADDR pc) +{ + enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); + gdb_byte op; + + target_read_memory (pc, &op, 1); + if (op == 0xe8) + { + gdb_byte buf[4]; + + if (target_read_memory (pc + 1, buf, sizeof buf) == 0) + { + struct minimal_symbol *s; + CORE_ADDR call_dest; + + call_dest = pc + 5 + extract_signed_integer (buf, 4, byte_order); + s = lookup_minimal_symbol_by_pc (call_dest); + if (s != NULL + && SYMBOL_LINKAGE_NAME (s) != NULL + && strcmp (SYMBOL_LINKAGE_NAME (s), "__main") == 0) + pc += 5; + } + } + + return pc; +} + + static void amd64_windows_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) { @@ -140,6 +172,7 @@ amd64_windows_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) tdep->memory_args_by_pointer = 1; tdep->integer_param_regs_saved_in_caller_frame = 1; set_gdbarch_return_value (gdbarch, amd64_windows_return_value); + set_gdbarch_skip_main_prologue (gdbarch, amd64_skip_main_prologue); set_solib_ops (gdbarch, &solib_target_so_ops); } |