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* Makefile (m68klinux-nat.o, m68klinux-tdep.o): Update

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dependencies.
	* config/m68k/tm-linux.h (DEPRECATED_EXTRACT_RETURN_VALUE): Define
	as m68k_linux_extract_return_value.
	(DEPRECATED_STORE_RETURN_VALUE): Define as
	m68k_linux_store_return_value.
	(DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS): Define as
	m68k_linux_extract_struct_value_address.
	* m68klinux-tdep.c (m68k_linux_sigtramp_saved_pc): Use
	get_next_frame, get_frame_base, get_frame_pc.
	(m68k_linux_frame_saved_pc): Use get_frame_base.
	(m68k_linux_extract_return_value): New function.
	(m68k_linux_store_return_value): New function.
	(m68k_linux_extract_struct_value_address): New function.
	* config/m68k/tm-m68k.h: Declare m68k_get_longjmp_target.
This commit is contained in:
Andreas Schwab
2003-05-18 21:10:11 +00:00
parent 55baeb8469
commit d0b45d99e8
5 changed files with 84 additions and 52 deletions
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57
gdb/m68klinux-tdep.c
View File

@ -1,6 +1,6 @@
/* Motorola m68k target-dependent support for GNU/Linux.
Copyright 1996, 1998, 2000, 2001, 2002 Free Software Foundation,
Copyright 1996, 1998, 2000, 2001, 2002, 2003 Free Software Foundation,
Inc.
This file is part of GDB.
@ -24,7 +24,9 @@
#include "gdbcore.h"
#include "frame.h"
#include "target.h"
#include "gdb_string.h"
#include "gdbtypes.h"
#include "m68k-tdep.h"
/* Check whether insn1 and insn2 are parts of a signal trampoline. */
@ -93,9 +95,9 @@ m68k_linux_sigtramp_saved_pc (struct frame_info *frame)
int sigcontext_offs = (2 * TARGET_INT_BIT) / TARGET_CHAR_BIT;
/* Get sigcontext address, it is the third parameter on the stack. */
if (frame->next)
if (get_next_frame (frame))
sigcontext_addr
= read_memory_unsigned_integer (FRAME_ARGS_ADDRESS (frame->next)
= read_memory_unsigned_integer (get_frame_base (get_next_frame (frame))
+ FRAME_ARGS_SKIP
+ sigcontext_offs,
ptrbytes);
@ -107,7 +109,7 @@ m68k_linux_sigtramp_saved_pc (struct frame_info *frame)
/* Don't cause a memory_error when accessing sigcontext in case the
stack layout has changed or the stack is corrupt. */
if (m68k_linux_in_sigtramp (frame->pc) == 2)
if (m68k_linux_in_sigtramp (get_frame_pc (frame)) == 2)
target_read_memory (sigcontext_addr + UCONTEXT_PC_OFFSET, buf, ptrbytes);
else
target_read_memory (sigcontext_addr + SIGCONTEXT_PC_OFFSET, buf, ptrbytes);
@ -122,5 +124,48 @@ m68k_linux_frame_saved_pc (struct frame_info *frame)
if (get_frame_type (frame) == SIGTRAMP_FRAME)
return m68k_linux_sigtramp_saved_pc (frame);
return read_memory_unsigned_integer (frame->frame + 4, 4);
return read_memory_unsigned_integer (get_frame_base (frame) + 4, 4);
}
void
m68k_linux_extract_return_value (struct type *type, char *regbuf, char *valbuf)
{
if (TYPE_CODE (type) == TYPE_CODE_FLT)
{
REGISTER_CONVERT_TO_VIRTUAL (FP0_REGNUM, type,
regbuf + REGISTER_BYTE (FP0_REGNUM),
valbuf);
}
else if (TYPE_CODE (type) == TYPE_CODE_PTR)
memcpy (valbuf, regbuf + REGISTER_BYTE (M68K_A0_REGNUM),
TYPE_LENGTH (type));
else
memcpy (valbuf,
regbuf + (TYPE_LENGTH (type) >= 4 ? 0 : 4 - TYPE_LENGTH (type)),
TYPE_LENGTH (type));
}
void
m68k_linux_store_return_value (struct type *type, char *valbuf)
{
if (TYPE_CODE (type) == TYPE_CODE_FLT)
{
char raw_buffer[REGISTER_RAW_SIZE (FP0_REGNUM)];
REGISTER_CONVERT_TO_RAW (type, FP0_REGNUM, valbuf, raw_buffer);
deprecated_write_register_bytes (REGISTER_BYTE (FP0_REGNUM),
raw_buffer, TYPE_LENGTH (type));
}
else
{
if (TYPE_CODE (type) == TYPE_CODE_PTR)
deprecated_write_register_bytes (REGISTER_BYTE (M68K_A0_REGNUM),
valbuf, TYPE_LENGTH (type));
deprecated_write_register_bytes (0, valbuf, TYPE_LENGTH (type));
}
}
CORE_ADDR
m68k_linux_extract_struct_value_address (char *regbuf)
{
return *(CORE_ADDR *) (regbuf + REGISTER_BYTE (M68K_A0_REGNUM));
}