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[7.5] PATCH: PR backtrace/14646 [x32] backtrace doesn't work
- From: "H.J. Lu" <hjl dot tools at gmail dot com>
- To: GDB <gdb-patches at sourceware dot org>
- Date: Sat, 20 Oct 2012 16:47:41 -0700
- Subject: [7.5] PATCH: PR backtrace/14646 [x32] backtrace doesn't work
Hi,
This patch backports the fix from trunk to 7.5 branch. Tested on
Linux/x86-64 and Linux/x32. OK to install?
Thanks.
H.J.
----
PR backtrace/14646
PR gdb/14647
* i386-tdep.h (gdbarch_tdep): Remove sp_regnum_from_eax and
pc_regnum_from_eax.
* i386-tdep.c (i386_gdbarch_init): Don't use sp_regnum_from_eax
nor pc_regnum_from_eax.
* amd64-tdep.c (amd64_x32_init_abi): Don't set sp_regnum_from_eax
nor pc_regnum_from_eax.
diff --git a/gdb/amd64-tdep.c b/gdb/amd64-tdep.c
index 5424926..8ae1142 100644
--- a/gdb/amd64-tdep.c
+++ b/gdb/amd64-tdep.c
@@ -2946,9 +2946,6 @@ amd64_x32_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
tdesc = tdesc_x32;
tdep->tdesc = tdesc;
- tdep->sp_regnum_from_eax = AMD64_RSP_REGNUM;
- tdep->pc_regnum_from_eax = AMD64_RIP_REGNUM;
-
tdep->num_dword_regs = 17;
set_tdesc_pseudo_register_type (gdbarch, amd64_x32_pseudo_register_type);
diff --git a/gdb/i386-tdep.c b/gdb/i386-tdep.c
index 84e9794..ddb20aa 100644
--- a/gdb/i386-tdep.c
+++ b/gdb/i386-tdep.c
@@ -7705,9 +7705,6 @@ i386_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
tdep->num_mmx_regs = 8;
tdep->num_ymm_regs = 0;
- tdep->sp_regnum_from_eax = -1;
- tdep->pc_regnum_from_eax = -1;
-
tdesc_data = tdesc_data_alloc ();
set_gdbarch_relocate_instruction (gdbarch, i386_relocate_instruction);
@@ -7752,14 +7749,6 @@ i386_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
/* Support dword pseudo-register if it hasn't been disabled. */
tdep->eax_regnum = ymm0_regnum;
ymm0_regnum += tdep->num_dword_regs;
- if (tdep->sp_regnum_from_eax != -1)
- set_gdbarch_sp_regnum (gdbarch,
- (tdep->eax_regnum
- + tdep->sp_regnum_from_eax));
- if (tdep->pc_regnum_from_eax != -1)
- set_gdbarch_pc_regnum (gdbarch,
- (tdep->eax_regnum
- + tdep->pc_regnum_from_eax));
}
else
tdep->eax_regnum = -1;
diff --git a/gdb/i386-tdep.h b/gdb/i386-tdep.h
index 76afdce..5f233f5 100644
--- a/gdb/i386-tdep.h
+++ b/gdb/i386-tdep.h
@@ -149,14 +149,6 @@ struct gdbarch_tdep
of pseudo dword register support. */
int eax_regnum;
- /* Register number for SP, relative to %eax. Set this to -1 to
- indicate the absence of pseudo SP register support. */
- int sp_regnum_from_eax;
-
- /* Register number for PC, relative to %eax. Set this to -1 to
- indicate the absence of pseudo PC register support. */
- int pc_regnum_from_eax;
-
/* Number of core registers. */
int num_core_regs;