/* Disassembly flavor to use. Default to "std" register names. */
static const char *disassembly_flavor;
-static int current_option; /* Index to that option in the opcodes table. */
+/* Index to that option in the opcodes table. */
+static int current_option;
/* This is used to keep the bfd arch_info in sync with the disassembly
flavor. */
thumb_skip_prologue (CORE_ADDR pc, CORE_ADDR func_end)
{
CORE_ADDR current_pc;
- int findmask = 0; /* findmask:
- bit 0 - push { rlist }
- bit 1 - mov r7, sp OR add r7, sp, #imm (setting of r7)
- bit 2 - sub sp, #simm OR add sp, #simm (adjusting of sp)
- */
-
- for (current_pc = pc; current_pc + 2 < func_end && current_pc < pc + 40; current_pc += 2)
+ /* findmask:
+ bit 0 - push { rlist }
+ bit 1 - mov r7, sp OR add r7, sp, #imm (setting of r7)
+ bit 2 - sub sp, #simm OR add sp, #simm (adjusting of sp)
+ */
+ int findmask = 0;
+
+ for (current_pc = pc;
+ current_pc + 2 < func_end && current_pc < pc + 40;
+ current_pc += 2)
{
unsigned short insn = read_memory_unsigned_integer (current_pc, 2);
{
findmask |= 1; /* push found */
}
- else if ((insn & 0xff00) == 0xb000) /* add sp, #simm OR sub sp, #simm */
+ else if ((insn & 0xff00) == 0xb000) /* add sp, #simm OR
+ sub sp, #simm */
{
if ((findmask & 1) == 0) /* before push ? */
continue;
}
else if (findmask == (4+2+1))
{
- break; /* We have found one of each type of prologue instruction */
+ /* We have found one of each type of prologue instruction */
+ break;
}
else
- continue; /* something in the prolog that we don't care about or some
- instruction from outside the prolog scheduled here for optimization */
+ /* something in the prolog that we don't care about or some
+ instruction from outside the prolog scheduled here for
+ optimization */
+ continue;
}
return current_pc;
}
-/* Advance the PC across any function entry prologue instructions to reach
- some "real" code.
+/* Advance the PC across any function entry prologue instructions to
+ reach some "real" code.
The APCS (ARM Procedure Call Standard) defines the following
prologue:
The frame size would thus be 36 bytes, and the frame offset would be
12 bytes. The frame register is R7.
- The comments for thumb_skip_prolog() describe the algorithm we use to detect
- the end of the prolog */
+ The comments for thumb_skip_prolog() describe the algorithm we use
+ to detect the end of the prolog. */
/* *INDENT-ON* */
static void
CORE_ADDR prologue_start;
CORE_ADDR prologue_end;
CORE_ADDR current_pc;
- int saved_reg[16]; /* which register has been copied to register n? */
- int findmask = 0; /* findmask:
- bit 0 - push { rlist }
- bit 1 - mov r7, sp OR add r7, sp, #imm (setting of r7)
- bit 2 - sub sp, #simm OR add sp, #simm (adjusting of sp)
- */
+ /* Which register has been copied to register n? */
+ int saved_reg[16];
+ /* findmask:
+ bit 0 - push { rlist }
+ bit 1 - mov r7, sp OR add r7, sp, #imm (setting of r7)
+ bit 2 - sub sp, #simm OR add sp, #simm (adjusting of sp)
+ */
+ int findmask = 0;
int i;
if (find_pc_partial_function (fi->pc, NULL, &prologue_start, &prologue_end))
prologue_end = sal.end; /* (probably means no prologue) */
}
else
- prologue_end = prologue_start + 40; /* We're in the boondocks: allow for */
- /* 16 pushes, an add, and "mv fp,sp" */
+ /* We're in the boondocks: allow for
+ 16 pushes, an add, and "mv fp,sp". */
+ prologue_end = prologue_start + 40;
prologue_end = min (prologue_end, fi->pc);
fi->extra_info->framesize += 4;
fi->saved_regs[saved_reg[regno]] =
-(fi->extra_info->framesize);
- saved_reg[regno] = regno; /* reset saved register map */
+ /* Reset saved register map. */
+ saved_reg[regno] = regno;
}
}
- else if ((insn & 0xff00) == 0xb000) /* add sp, #simm OR sub sp, #simm */
+ else if ((insn & 0xff00) == 0xb000) /* add sp, #simm OR
+ sub sp, #simm */
{
if ((findmask & 1) == 0) /* before push ? */
continue;
}
else if ((insn & 0xffc0) == 0x4640) /* mov r0-r7, r8-r15 */
{
- int lo_reg = insn & 7; /* dest. register (r0-r7) */
+ int lo_reg = insn & 7; /* dest. register (r0-r7) */
int hi_reg = ((insn >> 3) & 7) + 8; /* source register (r8-15) */
saved_reg[lo_reg] = hi_reg; /* remember hi reg was saved */
}
else
- continue; /* something in the prolog that we don't care about or some
- instruction from outside the prolog scheduled here for optimization */
+ /* Something in the prolog that we don't care about or some
+ instruction from outside the prolog scheduled here for
+ optimization. */
+ continue;
}
}
{
for (; fi; fi = fi->next)
-#if 0 /* FIXME: enable this code if we convert to new call dummy scheme. */
+#if 0 /* FIXME: enable this code if we convert to new call dummy scheme. */
if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame))
return generic_read_register_dummy (fi->pc, fi->frame, regnum);
else
static CORE_ADDR
arm_frame_chain (struct frame_info *fi)
{
-#if 0 /* FIXME: enable this code if we convert to new call dummy scheme. */
+#if 0 /* FIXME: enable this code if we convert to new call dummy scheme. */
CORE_ADDR fn_start, callers_pc, fp;
/* is this a dummy frame? */
memset (fi->saved_regs, '\000', sizeof fi->saved_regs);
-#if 0 /* FIXME: enable this code if we convert to new call dummy scheme. */
+#if 0 /* FIXME: enable this code if we convert to new call dummy scheme. */
if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame))
{
- /* We need to setup fi->frame here because run_stack_dummy gets it wrong
- by assuming it's always FP. */
+ /* We need to setup fi->frame here because run_stack_dummy gets
+ it wrong by assuming it's always FP. */
fi->frame = generic_read_register_dummy (fi->pc, fi->frame,
ARM_SP_REGNUM);
fi->extra_info->framesize = 0;
else
#endif
- /* Compute stack pointer for this frame. We use this value for both the
- sigtramp and call dummy cases. */
+ /* Compute stack pointer for this frame. We use this value for both
+ the sigtramp and call dummy cases. */
if (!fi->next)
sp = read_sp();
else
static CORE_ADDR
arm_frame_saved_pc (struct frame_info *fi)
{
-#if 0 /* FIXME: enable this code if we convert to new call dummy scheme. */
+#if 0 /* FIXME: enable this code if we convert to new call dummy scheme. */
if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame))
return generic_read_register_dummy (fi->pc, fi->frame, ARM_PC_REGNUM);
else
return sp;
}
-/* Pop the current frame. So long as the frame info has been initialized
- properly (see arm_init_extra_frame_info), this code works for dummy frames
- as well as regular frames. I.e, there's no need to have a special case
- for dummy frames. */
+/* Pop the current frame. So long as the frame info has been
+ initialized properly (see arm_init_extra_frame_info), this code
+ works for dummy frames as well as regular frames. I.e, there's no
+ need to have a special case for dummy frames. */
static void
arm_pop_frame (void)
{
if (csym.native == NULL)
{
- /* Create a fake symbol vector containing a Thumb symbol. This is
- solely so that the code in print_insn_little_arm() and
- print_insn_big_arm() in opcodes/arm-dis.c will detect the presence
- of a Thumb symbol and switch to decoding Thumb instructions. */
+ /* Create a fake symbol vector containing a Thumb symbol.
+ This is solely so that the code in print_insn_little_arm()
+ and print_insn_big_arm() in opcodes/arm-dis.c will detect
+ the presence of a Thumb symbol and switch to decoding
+ Thumb instructions. */
fake_target.flavour = bfd_target_coff_flavour;
fake_bfd.xvec = &fake_target;
return 0; /* not a stub */
}
-/* If the user changes the register disassembly flavor used for info register
- and other commands, we have to also switch the flavor used in opcodes
- for disassembly output.
- This function is run in the set disassembly_flavor command, and does that. */
+/* If the user changes the register disassembly flavor used for info
+ register and other commands, we have to also switch the flavor used
+ in opcodes for disassembly output. This function is run in the set
+ disassembly_flavor command, and does that. */
static void
set_disassembly_flavor_sfunc (char *args, int from_tty,
(*handler_p)->init_abi = init_abi;
}
-/* Initialize the current architecture based on INFO. If possible, re-use an
- architecture from ARCHES, which is a list of architectures already created
- during this debugging session.
+/* Initialize the current architecture based on INFO. If possible,
+ re-use an architecture from ARCHES, which is a list of
+ architectures already created during this debugging session.
- Called e.g. at program startup, when reading a core file, and when reading
- a binary file. */
+ Called e.g. at program startup, when reading a core file, and when
+ reading a binary file. */
static struct gdbarch *
arm_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
projects / platform / upstream / binutils.git / commitdiff