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[PATCH 2/3] Add ILP32 support to gdb.
- From: Andrew Pinski <apinski at cavium dot com>
- To: gdb-patches at sourceware dot org, binutils at sourceware dot org
- Cc: Andrew Pinski <apinski at cavium dot com>
- Date: Thu, 1 Sep 2016 00:36:39 -0700
- Subject: [PATCH 2/3] Add ILP32 support to gdb.
- Authentication-results: sourceware.org; auth=none
- References: <1472516750-30743-1-git-send-email-apinski@cavium.com> <1472715400-43043-1-git-send-email-apinski@cavium.com>
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.
---
gdb/ChangeLog | 9 +++++++++
gdb/aarch64-linux-tdep.c | 8 ++++++--
gdb/aarch64-tdep.c | 14 ++++++++++++--
gdb/aarch64-tdep.h | 3 +++
4 files changed, 30 insertions(+), 4 deletions(-)
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 602a05a..03db9e2 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -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.
diff --git a/gdb/aarch64-linux-tdep.c b/gdb/aarch64-linux-tdep.c
index cd220a6..43f959b 100644
--- a/gdb/aarch64-linux-tdep.c
+++ b/gdb/aarch64-linux-tdep.c
@@ -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,
diff --git a/gdb/aarch64-tdep.c b/gdb/aarch64-tdep.c
index 3b7e954..1730ef8 100644
--- a/gdb/aarch64-tdep.c
+++ b/gdb/aarch64-tdep.c
@@ -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
+ && elf_elfheader (info.abfd)->e_ident[EI_CLASS] == ELFCLASS32)
+ 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);
diff --git a/gdb/aarch64-tdep.h b/gdb/aarch64-tdep.h
index a95b613..7b1ce3e 100644
--- a/gdb/aarch64-tdep.h
+++ b/gdb/aarch64-tdep.h
@@ -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;
--
2.7.4