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Add ILP32 support to gdb.

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This patch adds AARCH64:ilp32 support to gdb and sets
up the correct sizes for some types like pointers and long.
Also sets up the correct linker map offsets for Linux.

2016-08-31  Andrew Pinski  <apinski@cavium.com>

	* aarch64-tdep.h (gdbarch_tdep): Add ilp32 field.
	* aarch64-tdep.c (aarch64_gdbarch_init): Setup ILP32 support.
	Make sure the gdbarches have compatible ilp32 flags.
	Set long and ptr sizes correctly for ilp32.
	* aarch64-linux-tdep.c (aarch64_linux_init_abi):
	Add support for ILP32.
This commit is contained in:
Andrew Pinski
2015-09-07 17:12:36 +08:00
parent d6920a9731
commit 65f976c1b1
4 changed files with 30 additions and 4 deletions
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9
gdb/ChangeLog
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@@ -1,3 +1,12 @@
2015-08-31 Andrew Pinski <apinski@cavium.com>
* aarch64-tdep.h (gdbarch_tdep): Add ilp32 field.
* aarch64-tdep.c (aarch64_gdbarch_init): Setup ILP32 support.
Make sure the gdbarches have compatible ilp32 flags.
Set long and ptr sizes correctly for ilp32.
* aarch64-linux-tdep.c (aarch64_linux_init_abi):
Add support for ILP32.
2016-08-31 Yao Qi <yao.qi@linaro.org>
* record-full.c (record_full_insert_breakpoint): Fix typo.

8
gdb/aarch64-linux-tdep.c
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@@ -1000,8 +1000,12 @@ aarch64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
linux_init_abi (info, gdbarch);
set_solib_svr4_fetch_link_map_offsets (gdbarch,
svr4_lp64_fetch_link_map_offsets);
if (tdep->ilp32)
set_solib_svr4_fetch_link_map_offsets (gdbarch,
svr4_ilp32_fetch_link_map_offsets);
else
set_solib_svr4_fetch_link_map_offsets (gdbarch,
svr4_lp64_fetch_link_map_offsets);
/* Enable TLS support. */
set_gdbarch_fetch_tls_load_module_address (gdbarch,

14
gdb/aarch64-tdep.c
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@@ -2646,6 +2646,12 @@ aarch64_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
const struct tdesc_feature *feature;
int num_regs = 0;
int num_pseudo_regs = 0;
char ilp32 = FALSE;
if (info.abfd
&& bfd_get_flavour (info.abfd) == bfd_target_elf_flavour
&& bfd_arch_bits_per_address (info.abfd) == 32)
ilp32 = TRUE;
/* Ensure we always have a target descriptor. */
if (!tdesc_has_registers (tdesc))
@@ -2703,6 +2709,9 @@ aarch64_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
best_arch != NULL;
best_arch = gdbarch_list_lookup_by_info (best_arch->next, &info))
{
/* ILP32 and LP64 are incompatible. */
if (gdbarch_tdep (arches->gdbarch)->ilp32 != ilp32)
continue;
/* Found a match. */
break;
}
@@ -2721,6 +2730,7 @@ aarch64_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
tdep->lowest_pc = 0x20;
tdep->jb_pc = -1; /* Longjump support not enabled by default. */
tdep->jb_elt_size = 8;
tdep->ilp32 = ilp32;
set_gdbarch_push_dummy_call (gdbarch, aarch64_push_dummy_call);
set_gdbarch_frame_align (gdbarch, aarch64_frame_align);
@@ -2760,9 +2770,9 @@ aarch64_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
set_gdbarch_float_bit (gdbarch, 32);
set_gdbarch_double_bit (gdbarch, 64);
set_gdbarch_long_double_bit (gdbarch, 128);
set_gdbarch_long_bit (gdbarch, 64);
set_gdbarch_long_bit (gdbarch, ilp32 ? 32 : 64);
set_gdbarch_long_long_bit (gdbarch, 64);
set_gdbarch_ptr_bit (gdbarch, 64);
set_gdbarch_ptr_bit (gdbarch, ilp32 ? 32 : 64);
set_gdbarch_char_signed (gdbarch, 0);
set_gdbarch_float_format (gdbarch, floatformats_ieee_single);
set_gdbarch_double_format (gdbarch, floatformats_ieee_double);

3
gdb/aarch64-tdep.h
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@@ -95,6 +95,9 @@ struct gdbarch_tdep
/* syscall record. */
int (*aarch64_syscall_record) (struct regcache *regcache, unsigned long svc_number);
/* If this is ILP32 or LP64. */
bool ilp32;
};
extern struct target_desc *tdesc_aarch64;