/* Common target dependent code for GDB on ARM systems.
- Copyright (C) 1988-2014 Free Software Foundation, Inc.
+ Copyright (C) 1988-2015 Free Software Foundation, Inc.
This file is part of GDB.
/* On soft-float targets, __truncdfsf2 is called to convert promoted
arguments to their argument types in non-prototyped
functions. */
- if (strncmp (name, "__truncdfsf2", strlen ("__truncdfsf2")) == 0)
+ if (startswith (name, "__truncdfsf2"))
return 1;
- if (strncmp (name, "__aeabi_d2f", strlen ("__aeabi_d2f")) == 0)
+ if (startswith (name, "__aeabi_d2f"))
return 1;
/* Internal functions related to thread-local storage. */
- if (strncmp (name, "__tls_get_addr", strlen ("__tls_get_addr")) == 0)
+ if (startswith (name, "__tls_get_addr"))
return 1;
- if (strncmp (name, "__aeabi_read_tp", strlen ("__aeabi_read_tp")) == 0)
+ if (startswith (name, "__aeabi_read_tp"))
return 1;
}
else
/* ADDR must correspond to a symbol whose name is __stack_chk_guard.
Otherwise, this sequence cannot be for stack protector. */
if (stack_chk_guard.minsym == NULL
- || strncmp (MSYMBOL_LINKAGE_NAME (stack_chk_guard.minsym),
- "__stack_chk_guard",
- strlen ("__stack_chk_guard")) != 0)
+ || !startswith (MSYMBOL_LINKAGE_NAME (stack_chk_guard.minsym), "__stack_chk_guard"))
return pc;
if (is_thumb)
if (post_prologue_pc
&& (cust == NULL
|| COMPUNIT_PRODUCER (cust) == NULL
- || strncmp (COMPUNIT_PRODUCER (cust), "GNU ",
- sizeof ("GNU ") - 1) == 0
- || strncmp (COMPUNIT_PRODUCER (cust), "clang ",
- sizeof ("clang ") - 1) == 0))
+ || startswith (COMPUNIT_PRODUCER (cust), "GNU ")
+ || startswith (COMPUNIT_PRODUCER (cust), "clang ")))
return post_prologue_pc;
if (post_prologue_pc != 0)
return cache;
}
+/* Implementation of the stop_reason hook for arm_prologue frames. */
+
+static enum unwind_stop_reason
+arm_prologue_unwind_stop_reason (struct frame_info *this_frame,
+ void **this_cache)
+{
+ struct arm_prologue_cache *cache;
+ CORE_ADDR pc;
+
+ if (*this_cache == NULL)
+ *this_cache = arm_make_prologue_cache (this_frame);
+ cache = *this_cache;
+
+ /* This is meant to halt the backtrace at "_start". */
+ pc = get_frame_pc (this_frame);
+ if (pc <= gdbarch_tdep (get_frame_arch (this_frame))->lowest_pc)
+ return UNWIND_OUTERMOST;
+
+ /* If we've hit a wall, stop. */
+ if (cache->prev_sp == 0)
+ return UNWIND_OUTERMOST;
+
+ return UNWIND_NO_REASON;
+}
+
/* Our frame ID for a normal frame is the current function's starting PC
and the caller's SP when we were called. */
*this_cache = arm_make_prologue_cache (this_frame);
cache = *this_cache;
- /* This is meant to halt the backtrace at "_start". */
- pc = get_frame_pc (this_frame);
- if (pc <= gdbarch_tdep (get_frame_arch (this_frame))->lowest_pc)
- return;
-
- /* If we've hit a wall, stop. */
- if (cache->prev_sp == 0)
- return;
-
/* Use function start address as part of the frame ID. If we cannot
identify the start address (due to missing symbol information),
fall back to just using the current PC. */
+ pc = get_frame_pc (this_frame);
func = get_frame_func (this_frame);
if (!func)
func = pc;
struct frame_unwind arm_prologue_unwind = {
NORMAL_FRAME,
- default_frame_unwind_stop_reason,
+ arm_prologue_unwind_stop_reason,
arm_prologue_this_id,
arm_prologue_prev_register,
NULL,
}
}
-/* Return true if we are in the function's epilogue, i.e. after the
- instruction that destroyed the function's stack frame. */
+/* Implement the stack_frame_destroyed_p gdbarch method. */
static int
-thumb_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR pc)
+thumb_stack_frame_destroyed_p (struct gdbarch *gdbarch, CORE_ADDR pc)
{
enum bfd_endian byte_order_for_code = gdbarch_byte_order_for_code (gdbarch);
unsigned int insn, insn2;
return found_stack_adjust;
}
-/* Return true if we are in the function's epilogue, i.e. after the
- instruction that destroyed the function's stack frame. */
+/* Implement the stack_frame_destroyed_p gdbarch method. */
static int
-arm_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR pc)
+arm_stack_frame_destroyed_p (struct gdbarch *gdbarch, CORE_ADDR pc)
{
enum bfd_endian byte_order_for_code = gdbarch_byte_order_for_code (gdbarch);
unsigned int insn;
CORE_ADDR func_start, func_end;
if (arm_pc_is_thumb (gdbarch, pc))
- return thumb_in_function_epilogue_p (gdbarch, pc);
+ return thumb_stack_frame_destroyed_p (gdbarch, pc);
if (!find_pc_partial_function (pc, NULL, &func_start, &func_end))
return 0;
Preparation: tmp1, tmp2, tmp3 <- r0, r1, r2;
r0, r1, r2 <- rd, rn, rm
- Insn: <op><cond> r0, r1, r2 [, <shift>]
+ Insn: <op><cond> r0, [r1,] r2 [, <shift>]
Cleanup: rd <- r0; r0, r1, r2 <- tmp1, tmp2, tmp3
*/
struct regcache *regs,
struct displaced_step_closure *dsc)
{
- unsigned rn, rm, rd;
+ unsigned rm, rd;
- rd = bits (insn, 3, 6);
- rn = (bit (insn, 7) << 3) | bits (insn, 0, 2);
- rm = 2;
+ rm = bits (insn, 3, 6);
+ rd = (bit (insn, 7) << 3) | bits (insn, 0, 2);
- if (rd != ARM_PC_REGNUM && rn != ARM_PC_REGNUM)
+ if (rd != ARM_PC_REGNUM && rm != ARM_PC_REGNUM)
return thumb_copy_unmodified_16bit (gdbarch, insn, "ALU reg", dsc);
if (debug_displaced)
- fprintf_unfiltered (gdb_stdlog, "displaced: copying reg %s insn %.4x\n",
- "ALU", (unsigned short) insn);
+ fprintf_unfiltered (gdb_stdlog, "displaced: copying ALU reg insn %.4x\n",
+ (unsigned short) insn);
- dsc->modinsn[0] = ((insn & 0xff00) | 0x08);
+ dsc->modinsn[0] = ((insn & 0xff00) | 0x10);
- install_alu_reg (gdbarch, regs, dsc, rd, rn, rm);
+ install_alu_reg (gdbarch, regs, dsc, rd, rd, rm);
return 0;
}
_call_via_xx, where x is the register name. The possible names
are r0-r9, sl, fp, ip, sp, and lr. ARM RealView has similar
functions, named __ARM_call_via_r[0-7]. */
- if (strncmp (name, "_call_via_", 10) == 0
- || strncmp (name, "__ARM_call_via_", strlen ("__ARM_call_via_")) == 0)
+ if (startswith (name, "_call_via_")
+ || startswith (name, "__ARM_call_via_"))
{
/* Use the name suffix to determine which register contains the
target PC. */
namelen = strlen (name);
if (name[0] == '_' && name[1] == '_'
&& ((namelen > 2 + strlen ("_from_thumb")
- && strncmp (name + namelen - strlen ("_from_thumb"), "_from_thumb",
- strlen ("_from_thumb")) == 0)
+ && startswith (name + namelen - strlen ("_from_thumb"), "_from_thumb"))
|| (namelen > 2 + strlen ("_from_arm")
- && strncmp (name + namelen - strlen ("_from_arm"), "_from_arm",
- strlen ("_from_arm")) == 0)))
+ && startswith (name + namelen - strlen ("_from_arm"), "_from_arm"))))
{
char *target_name;
int target_len = namelen - 2;
set_fp_model_sfunc (char *args, int from_tty,
struct cmd_list_element *c)
{
- enum arm_float_model fp_model;
+ int fp_model;
for (fp_model = ARM_FLOAT_AUTO; fp_model != ARM_FLOAT_LAST; fp_model++)
if (strcmp (current_fp_model, fp_model_strings[fp_model]) == 0)
arm_set_abi (char *args, int from_tty,
struct cmd_list_element *c)
{
- enum arm_abi_kind arm_abi;
+ int arm_abi;
for (arm_abi = ARM_ABI_AUTO; arm_abi != ARM_ABI_LAST; arm_abi++)
if (strcmp (arm_abi_string, arm_abi_strings[arm_abi]) == 0)
anyway, so assume APCS. */
arm_abi = ARM_ABI_APCS;
}
- else if (ei_osabi == ELFOSABI_NONE)
+ else if (ei_osabi == ELFOSABI_NONE || ei_osabi == ELFOSABI_GNU)
{
int eabi_ver = EF_ARM_EABI_VERSION (e_flags);
int attr_arch, attr_profile;
/* Advance PC across function entry code. */
set_gdbarch_skip_prologue (gdbarch, arm_skip_prologue);
- /* Detect whether PC is in function epilogue. */
- set_gdbarch_in_function_epilogue_p (gdbarch, arm_in_function_epilogue_p);
+ /* Detect whether PC is at a point where the stack has been destroyed. */
+ set_gdbarch_stack_frame_destroyed_p (gdbarch, arm_stack_frame_destroyed_p);
/* Skip trampolines. */
set_gdbarch_skip_trampoline_code (gdbarch, arm_skip_stub);
{
/* (Starting from numerical 0); bits 25, 26, 27 decodes type of arm instruction. */
- static const sti_arm_hdl_fp_t const arm_handle_insn[8] =
+ static const sti_arm_hdl_fp_t arm_handle_insn[8] =
{
arm_record_data_proc_misc_ld_str, /* 000. */
arm_record_data_proc_imm, /* 001. */
};
/* (Starting from numerical 0); bits 13,14,15 decodes type of thumb instruction. */
- static const sti_arm_hdl_fp_t const thumb_handle_insn[8] =
+ static const sti_arm_hdl_fp_t thumb_handle_insn[8] =
{ \
thumb_record_shift_add_sub, /* 000. */
thumb_record_add_sub_cmp_mov, /* 001. */
projects / binutils.git / blobdiff