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* arm-linux-tdep.c (ARM_SET_R7_SIGRETURN, ARM_SET_R7_RT_SIGRETURN)

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(ARM_EABI_SYSCALL, arm_linux_sigtramp_cache, arm_linux_sigreturn_init)
	(arm_linux_rt_sigreturn_init, arm_linux_sigreturn_tramp_frame)
	(arm_linux_rt_sigreturn_tramp_frame)
	(arm_eabi_linux_sigreturn_tramp_frame)
	(arm_eabi_linux_rt_sigreturn_tramp_frame): New.
	(arm_linux_init_abi): Register the new signal unwinders.
	(arm_linux_in_sigtramp, arm_linux_sigcontext_register_address):
	Delete.
	* arm-tdep.c (SIGCONTEXT_REGISTER_ADDRESS_P)
	(SIGCONTEXT_REGISTER_ADDRESS, arm_make_sigtramp_cache)
	(arm_sigtramp_this_id, arm_sigtramp_prev_register)
	(arm_sigtramp_unwind, arm_sigtramp_unwind_sniffer): Delete.
	(arm_gdbarch_init): Don't register a signal unwinder.
	* config/arm/tm-linux.h (arm_linux_in_sigtramp)
	(arm_linux_sigcontext_register_address): Delete prototypes.
	(DEPRECATED_IN_SIGTRAMP, SIGCONTEXT_REGISTER_ADDRESS): Delete.
	* Makefile.in (arm-linux-tdep.o): Update.
This commit is contained in:
Daniel Jacobowitz
2005-12-22 17:06:25 +00:00
parent 2e1e12b1f4
commit 8e9d1a243c
5 changed files with 121 additions and 196 deletions
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109
gdb/arm-tdep.c
View File

@@ -51,36 +51,6 @@
static int arm_debug;
/* Each OS has a different mechanism for accessing the various
registers stored in the sigcontext structure.
SIGCONTEXT_REGISTER_ADDRESS should be defined to the name (or
function pointer) which may be used to determine the addresses
of the various saved registers in the sigcontext structure.
For the ARM target, there are three parameters to this function.
The first is the pc value of the frame under consideration, the
second the stack pointer of this frame, and the last is the
register number to fetch.
If the tm.h file does not define this macro, then it's assumed that
no mechanism is needed and we define SIGCONTEXT_REGISTER_ADDRESS to
be 0.
When it comes time to multi-arching this code, see the identically
named machinery in ia64-tdep.c for an example of how it could be
done. It should not be necessary to modify the code below where
this macro is used. */
#ifdef SIGCONTEXT_REGISTER_ADDRESS
#ifndef SIGCONTEXT_REGISTER_ADDRESS_P
#define SIGCONTEXT_REGISTER_ADDRESS_P() 1
#endif
#else
#define SIGCONTEXT_REGISTER_ADDRESS(SP,PC,REG) 0
#define SIGCONTEXT_REGISTER_ADDRESS_P() 0
#endif
/* Macros for setting and testing a bit in a minimal symbol that marks
it as Thumb function. The MSB of the minimal symbol's "info" field
is used for this purpose.
@@ -1063,84 +1033,6 @@ struct frame_base arm_normal_base = {
arm_normal_frame_base
};
static struct arm_prologue_cache *
arm_make_sigtramp_cache (struct frame_info *next_frame)
{
struct arm_prologue_cache *cache;
int reg;
cache = frame_obstack_zalloc (sizeof (struct arm_prologue_cache));
cache->prev_sp = frame_unwind_register_unsigned (next_frame, ARM_SP_REGNUM);
cache->saved_regs = trad_frame_alloc_saved_regs (next_frame);
for (reg = 0; reg < NUM_REGS; reg++)
cache->saved_regs[reg].addr
= SIGCONTEXT_REGISTER_ADDRESS (cache->prev_sp,
frame_pc_unwind (next_frame), reg);
/* FIXME: What about thumb mode? */
cache->framereg = ARM_SP_REGNUM;
cache->prev_sp
= read_memory_integer (cache->saved_regs[cache->framereg].addr,
register_size (current_gdbarch, cache->framereg));
return cache;
}
static void
arm_sigtramp_this_id (struct frame_info *next_frame,
void **this_cache,
struct frame_id *this_id)
{
struct arm_prologue_cache *cache;
if (*this_cache == NULL)
*this_cache = arm_make_sigtramp_cache (next_frame);
cache = *this_cache;
/* FIXME drow/2003-07-07: This isn't right if we single-step within
the sigtramp frame; the PC should be the beginning of the trampoline. */
*this_id = frame_id_build (cache->prev_sp, frame_pc_unwind (next_frame));
}
static void
arm_sigtramp_prev_register (struct frame_info *next_frame,
void **this_cache,
int prev_regnum,
int *optimized,
enum lval_type *lvalp,
CORE_ADDR *addrp,
int *realnump,
gdb_byte *valuep)
{
struct arm_prologue_cache *cache;
if (*this_cache == NULL)
*this_cache = arm_make_sigtramp_cache (next_frame);
cache = *this_cache;
trad_frame_get_prev_register (next_frame, cache->saved_regs, prev_regnum,
optimized, lvalp, addrp, realnump, valuep);
}
struct frame_unwind arm_sigtramp_unwind = {
SIGTRAMP_FRAME,
arm_sigtramp_this_id,
arm_sigtramp_prev_register
};
static const struct frame_unwind *
arm_sigtramp_unwind_sniffer (struct frame_info *next_frame)
{
if (SIGCONTEXT_REGISTER_ADDRESS_P ()
&& legacy_pc_in_sigtramp (frame_pc_unwind (next_frame), (char *) 0))
return &arm_sigtramp_unwind;
return NULL;
}
/* Assuming NEXT_FRAME->prev is a dummy, return the frame ID of that
dummy frame. The frame ID's base needs to match the TOS value
saved by save_dummy_frame_tos() and returned from
@@ -2907,7 +2799,6 @@ arm_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
/* Add some default predicates. */
frame_unwind_append_sniffer (gdbarch, arm_stub_unwind_sniffer);
frame_unwind_append_sniffer (gdbarch, arm_sigtramp_unwind_sniffer);
frame_unwind_append_sniffer (gdbarch, dwarf2_frame_sniffer);
frame_unwind_append_sniffer (gdbarch, arm_prologue_unwind_sniffer);