/* Intel 386 target-dependent stuff.
- Copyright (C) 1988, 1989, 1991, 1994, 1995, 1996, 1998
+ Copyright (C) 1988, 1989, 1991, 1994, 1995, 1996, 1998, 2001
Free Software Foundation, Inc.
This file is part of GDB.
#include "gdbcmd.h"
#include "command.h"
#include "arch-utils.h"
+#include "regcache.h"
static long i386_get_frame_setup (CORE_ADDR);
codestream_fill(0) : codestream_buf[codestream_off++])
static unsigned char
-codestream_fill (peek_flag)
- int peek_flag;
+codestream_fill (int peek_flag)
{
codestream_addr = codestream_next_addr;
codestream_next_addr += CODESTREAM_BUFSIZ;
}
static void
-codestream_seek (place)
- CORE_ADDR place;
+codestream_seek (CORE_ADDR place)
{
codestream_next_addr = place / CODESTREAM_BUFSIZ;
codestream_next_addr *= CODESTREAM_BUFSIZ;
}
static void
-codestream_read (buf, count)
- unsigned char *buf;
- int count;
+codestream_read (unsigned char *buf, int count)
{
unsigned char *p;
int i;
/* next instruction is a jump, move to target */
static void
-i386_follow_jump ()
+i386_follow_jump (void)
{
unsigned char buf[4];
long delta;
*/
static long
-i386_get_frame_setup (pc)
- CORE_ADDR pc;
+i386_get_frame_setup (CORE_ADDR pc)
{
unsigned char op;
Can return -1, meaning no way to tell. */
int
-i386_frame_num_args (fi)
- struct frame_info *fi;
+i386_frame_num_args (struct frame_info *fi)
{
#if 1
return -1;
*/
void
-i386_frame_init_saved_regs (fip)
- struct frame_info *fip;
+i386_frame_init_saved_regs (struct frame_info *fip)
{
long locals = -1;
unsigned char op;
/* return pc of first real instruction */
int
-i386_skip_prologue (pc)
- int pc;
+i386_skip_prologue (int pc)
{
unsigned char op;
int i;
}
void
-i386_push_dummy_frame ()
+i386_push_dummy_frame (void)
{
CORE_ADDR sp = read_register (SP_REGNUM);
int regnum;
}
void
-i386_pop_frame ()
+i386_pop_frame (void)
{
struct frame_info *frame = get_current_frame ();
CORE_ADDR fp;
This routine returns true on success. */
int
-get_longjmp_target (pc)
- CORE_ADDR *pc;
+get_longjmp_target (CORE_ADDR *pc)
{
char buf[TARGET_PTR_BIT / TARGET_CHAR_BIT];
CORE_ADDR sp, jb_addr;
/* These registers are used for returning integers (and on some
targets also for returning `struct' and `union' values when their
- size and alignment match an integer type. */
+ size and alignment match an integer type). */
#define LOW_RETURN_REGNUM 0 /* %eax */
#define HIGH_RETURN_REGNUM 2 /* %edx */
{
warning ("Cannot find floating-point return value.");
memset (valbuf, 0, len);
+ return;
}
/* Floating-point return values can be found in %st(0). */
®buf[REGISTER_BYTE (HIGH_RETURN_REGNUM)], len - low_size);
}
else
- internal_error ("Cannot extract return value of %d bytes long.", len);
+ internal_error (__FILE__, __LINE__,
+ "Cannot extract return value of %d bytes long.", len);
+ }
+}
+
+/* Write into the appropriate registers a function return value stored
+ in VALBUF of type TYPE, given in virtual format. */
+
+void
+i386_store_return_value (struct type *type, char *valbuf)
+{
+ int len = TYPE_LENGTH (type);
+
+ if (TYPE_CODE_FLT == TYPE_CODE (type))
+ {
+ if (NUM_FREGS == 0)
+ {
+ warning ("Cannot set floating-point return value.");
+ return;
+ }
+
+ /* Floating-point return values can be found in %st(0). */
+ if (len == TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT
+ && TARGET_LONG_DOUBLE_FORMAT == &floatformat_i387_ext)
+ {
+ /* Copy straight over. */
+ write_register_bytes (REGISTER_BYTE (FP0_REGNUM), valbuf,
+ FPU_REG_RAW_SIZE);
+ }
+ else
+ {
+ char buf[FPU_REG_RAW_SIZE];
+ DOUBLEST val;
+
+ /* Convert the value found in VALBUF to the extended
+ floating point format used by the FPU. This is probably
+ not exactly how it would happen on the target itself, but
+ it is the best we can do. */
+ val = extract_floating (valbuf, TYPE_LENGTH (type));
+ floatformat_from_doublest (&floatformat_i387_ext, &val, buf);
+ write_register_bytes (REGISTER_BYTE (FP0_REGNUM), buf,
+ FPU_REG_RAW_SIZE);
+ }
+ }
+ else
+ {
+ int low_size = REGISTER_RAW_SIZE (LOW_RETURN_REGNUM);
+ int high_size = REGISTER_RAW_SIZE (HIGH_RETURN_REGNUM);
+
+ if (len <= low_size)
+ write_register_bytes (REGISTER_BYTE (LOW_RETURN_REGNUM), valbuf, len);
+ else if (len <= (low_size + high_size))
+ {
+ write_register_bytes (REGISTER_BYTE (LOW_RETURN_REGNUM),
+ valbuf, low_size);
+ write_register_bytes (REGISTER_BYTE (HIGH_RETURN_REGNUM),
+ valbuf + low_size, len - low_size);
+ }
+ else
+ internal_error (__FILE__, __LINE__,
+ "Cannot store return value of %d bytes long.", len);
}
}
for all three variants of SVR4 sigtramps. */
CORE_ADDR
-i386v4_sigtramp_saved_pc (frame)
- struct frame_info *frame;
+i386v4_sigtramp_saved_pc (struct frame_info *frame)
{
CORE_ADDR saved_pc_offset = 4;
char *name = NULL;
it is done for C too. */
char *
-sunpro_static_transform_name (name)
- char *name;
+sunpro_static_transform_name (char *name)
{
char *p;
if (IS_STATIC_TRANSFORM_NAME (name))
/* Stuff for WIN32 PE style DLL's but is pretty generic really. */
CORE_ADDR
-skip_trampoline_code (pc, name)
- CORE_ADDR pc;
- char *name;
+skip_trampoline_code (CORE_ADDR pc, char *name)
{
if (pc && read_memory_unsigned_integer (pc, 2) == 0x25ff) /* jmp *(dest) */
{
}
static int
-gdb_print_insn_i386 (memaddr, info)
- bfd_vma memaddr;
- disassemble_info *info;
+gdb_print_insn_i386 (bfd_vma memaddr, disassemble_info *info)
{
if (disassembly_flavor == att_flavor)
return print_insn_i386_att (memaddr, info);
return print_insn_i386_intel (memaddr, info);
/* Never reached - disassembly_flavour is always either att_flavor
or intel_flavor */
- abort ();
+ internal_error (__FILE__, __LINE__, "failed internal consistency check");
}
/* If the disassembly mode is intel, we have to also switch the
command, and does that. */
static void
-set_disassembly_flavor_sfunc (args, from_tty, c)
- char *args;
- int from_tty;
- struct cmd_list_element *c;
+set_disassembly_flavor_sfunc (char *args, int from_tty,
+ struct cmd_list_element *c)
{
set_disassembly_flavor ();
}
static void
-set_disassembly_flavor ()
+set_disassembly_flavor (void)
{
if (disassembly_flavor == att_flavor)
set_architecture_from_arch_mach (bfd_arch_i386, bfd_mach_i386_i386);
void
-_initialize_i386_tdep ()
+_initialize_i386_tdep (void)
{
/* Initialize the table saying where each register starts in the
register file. */
projects / deliverable / binutils-gdb.git / blobdiff