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* arm-linux-tdep.c (ARM_OABI_SYSCALL_RESTART_SYSCALL): New macro.

Browse Source 
(ARM_LDR_PC_SP_12): Likewise.
	(arm_linux_restart_syscall_init): New function.
	(arm_linux_restart_syscall_tramp_frame): New variable.
	(arm_linux_init_abi): Install the
	arm_linux_restart_syscall_tramp_frame unwinder.
This commit is contained in:
Maciej W. Rozycki 2009-12-19 00:40:15 +00:00
parent 00f515dab6
commit f19732033a
2 changed files with 42 additions and 0 deletions
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9
gdb/ChangeLog
View File

@ -1,3 +1,12 @@
2009-12-19 Maciej W. Rozycki <macro@codesourcery.com>
* arm-linux-tdep.c (ARM_OABI_SYSCALL_RESTART_SYSCALL): New macro.
(ARM_LDR_PC_SP_12): Likewise.
(arm_linux_restart_syscall_init): New function.
(arm_linux_restart_syscall_tramp_frame): New variable.
(arm_linux_init_abi): Install the
arm_linux_restart_syscall_tramp_frame unwinder.
2009-12-18 Doug Evans <dje@google.com>
* gdb_proc_service.h (psaddr_t): Fix type.

33
gdb/arm-linux-tdep.c
View File

@ -216,6 +216,11 @@ static const char arm_linux_thumb_le_breakpoint[] = {0x01, 0xde};
#define ARM_SET_R7_RT_SIGRETURN 0xe3a070ad
#define ARM_EABI_SYSCALL 0xef000000
/* OABI syscall restart trampoline, used for EABI executables too
whenever OABI support has been enabled in the kernel. */
#define ARM_OABI_SYSCALL_RESTART_SYSCALL 0xef900000
#define ARM_LDR_PC_SP_12 0xe49df00c
static void
arm_linux_sigtramp_cache (struct frame_info *this_frame,
struct trad_frame_cache *this_cache,
@ -325,6 +330,21 @@ arm_linux_rt_sigreturn_init (const struct tramp_frame *self,
+ ARM_SIGCONTEXT_R0);
}
static void
arm_linux_restart_syscall_init (const struct tramp_frame *self,
struct frame_info *this_frame,
struct trad_frame_cache *this_cache,
CORE_ADDR func)
{
CORE_ADDR sp = get_frame_register_unsigned (this_frame, ARM_SP_REGNUM);
trad_frame_set_reg_addr (this_cache, ARM_PC_REGNUM, sp);
trad_frame_set_reg_value (this_cache, ARM_SP_REGNUM, sp + 12);
/* Save a frame ID. */
trad_frame_set_id (this_cache, frame_id_build (sp, func));
}
static struct tramp_frame arm_linux_sigreturn_tramp_frame = {
SIGTRAMP_FRAME,
4,
@ -367,6 +387,17 @@ static struct tramp_frame arm_eabi_linux_rt_sigreturn_tramp_frame = {
arm_linux_rt_sigreturn_init
};
static struct tramp_frame arm_linux_restart_syscall_tramp_frame = {
NORMAL_FRAME,
4,
{
{ ARM_OABI_SYSCALL_RESTART_SYSCALL, -1 },
{ ARM_LDR_PC_SP_12, -1 },
{ TRAMP_SENTINEL_INSN }
},
arm_linux_restart_syscall_init
};
/* Core file and register set support. */
#define ARM_LINUX_SIZEOF_GREGSET (18 * INT_REGISTER_SIZE)
@ -860,6 +891,8 @@ arm_linux_init_abi (struct gdbarch_info info,
&arm_eabi_linux_sigreturn_tramp_frame);
tramp_frame_prepend_unwinder (gdbarch,
&arm_eabi_linux_rt_sigreturn_tramp_frame);
tramp_frame_prepend_unwinder (gdbarch,
&arm_linux_restart_syscall_tramp_frame);
/* Core file support. */
set_gdbarch_regset_from_core_section (gdbarch,