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* Makefile.in: Adjust dependencies of m68klinux-tdep.c.

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* m68klinux-tdep.c (m68k_uclinux_sigcontext_reg_offset): New.
	(m68k_linux_sigcontext_reg_offset): Fix typo.
	(target_is_uclinux): New.
	(m68k_linux_inferior_created): New.
	(m68k_linux_get_sigtramp_info):  Check for uClinux or
	normal Linux.  Use m68k_uclinux_sigcontext_reg_offset for
	uClinux.
	(_initialize_m68k_linux_tdep): Register
	m68k_linux_inferior_created.
This commit is contained in:
Mark Shinwell 2007-04-20 12:13:52 +00:00
parent 0bbdef9222
commit 0ebdb72899
3 changed files with 78 additions and 3 deletions
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13
ChangeLog
View File

@ -1,3 +1,16 @@
2007-04-20 Mark Shinwell <shinwell@codesourcery.com>
* Makefile.in: Adjust dependencies of m68klinux-tdep.c.
* m68klinux-tdep.c (m68k_uclinux_sigcontext_reg_offset): New.
(m68k_linux_sigcontext_reg_offset): Fix typo.
(target_is_uclinux): New.
(m68k_linux_inferior_created): New.
(m68k_linux_get_sigtramp_info): Check for uClinux or
normal Linux. Use m68k_uclinux_sigcontext_reg_offset for
uClinux.
(_initialize_m68k_linux_tdep): Register
m68k_linux_inferior_created.
2007-04-14 Steve Ellcey <sje@cup.hp.com>
* config-ml.in: Update from GCC.

2
gdb/Makefile.in
View File

@ -2285,7 +2285,7 @@ m68klinux-tdep.o: m68klinux-tdep.c $(defs_h) $(gdbcore_h) $(doublest_h) \
$(floatformat_h) $(frame_h) $(target_h) $(gdb_string_h) \
$(gdbtypes_h) $(osabi_h) $(regcache_h) $(objfiles_h) $(symtab_h) \
$(m68k_tdep_h) $(trad_frame_h) $(frame_unwind_h) $(glibc_tdep_h) \
$(solib_svr4_h)
$(solib_svr4_h) $(observer_h) $(elf_common_h) $(auxv_h)
m68k-stub.o: m68k-stub.c
m68k-tdep.o: m68k-tdep.c $(defs_h) $(dwarf2_frame_h) $(frame_h) \
$(frame_base_h) $(frame_unwind_h) $(gdbtypes_h) $(symtab_h) \

66
gdb/m68klinux-tdep.c
View File

@ -37,6 +37,9 @@
#include "frame-unwind.h"
#include "glibc-tdep.h"
#include "solib-svr4.h"
#include "auxv.h"
#include "observer.h"
#include "elf/common.h"
/* Offsets (in target ints) into jmp_buf. */
@ -112,7 +115,7 @@ static int m68k_linux_sigcontext_reg_offset[M68K_NUM_REGS] =
-1, /* %a5 */
-1, /* %fp */
1 * 4, /* %sp */
5 * 4 + 2, /* %sr */
6 * 4, /* %sr */
6 * 4 + 2, /* %pc */
8 * 4, /* %fp0 */
11 * 4, /* %fp1 */
@ -127,6 +130,39 @@ static int m68k_linux_sigcontext_reg_offset[M68K_NUM_REGS] =
16 * 4 /* %fpiaddr */
};
static int m68k_uclinux_sigcontext_reg_offset[M68K_NUM_REGS] =
{
2 * 4, /* %d0 */
3 * 4, /* %d1 */
-1, /* %d2 */
-1, /* %d3 */
-1, /* %d4 */
-1, /* %d5 */
-1, /* %d6 */
-1, /* %d7 */
4 * 4, /* %a0 */
5 * 4, /* %a1 */
-1, /* %a2 */
-1, /* %a3 */
-1, /* %a4 */
6 * 4, /* %a5 */
-1, /* %fp */
1 * 4, /* %sp */
7 * 4, /* %sr */
7 * 4 + 2, /* %pc */
-1, /* %fp0 */
-1, /* %fp1 */
-1, /* %fp2 */
-1, /* %fp3 */
-1, /* %fp4 */
-1, /* %fp5 */
-1, /* %fp6 */
-1, /* %fp7 */
-1, /* %fpcr */
-1, /* %fpsr */
-1 /* %fpiaddr */
};
/* From <asm/ucontext.h>. */
static int m68k_linux_ucontext_reg_offset[M68K_NUM_REGS] =
{
@ -173,6 +209,17 @@ struct m68k_linux_sigtramp_info
int *sc_reg_offset;
};
/* Nonzero if running on uClinux. */
static int target_is_uclinux;
static void
m68k_linux_inferior_created (struct target_ops *objfile, int from_tty)
{
/* Record that we will need to re-evaluate whether we are running on
a uClinux or normal Linux target (see m68k_linux_get_sigtramp_info). */
target_is_uclinux = -1;
}
static struct m68k_linux_sigtramp_info
m68k_linux_get_sigtramp_info (struct frame_info *next_frame)
{
@ -180,6 +227,18 @@ m68k_linux_get_sigtramp_info (struct frame_info *next_frame)
char buf[4];
struct m68k_linux_sigtramp_info info;
if (target_is_uclinux == -1)
{
/* Determine whether we are running on a uClinux or normal Linux
target so we can use the correct sigcontext layouts. */
CORE_ADDR dummy;
target_is_uclinux
= target_auxv_search (&current_target, AT_NULL, &dummy) > 0
&& target_auxv_search (&current_target, AT_PAGESZ, &dummy) == 0;
}
frame_unwind_register (next_frame, M68K_SP_REGNUM, buf);
sp = extract_unsigned_integer (buf, 4);
@ -189,7 +248,9 @@ m68k_linux_get_sigtramp_info (struct frame_info *next_frame)
if (m68k_linux_pc_in_sigtramp (frame_pc_unwind (next_frame), 0) == 2)
info.sc_reg_offset = m68k_linux_ucontext_reg_offset;
else
info.sc_reg_offset = m68k_linux_sigcontext_reg_offset;
info.sc_reg_offset
= target_is_uclinux ? m68k_uclinux_sigcontext_reg_offset
: m68k_linux_sigcontext_reg_offset;
return info;
}
@ -319,4 +380,5 @@ _initialize_m68k_linux_tdep (void)
{
gdbarch_register_osabi (bfd_arch_m68k, 0, GDB_OSABI_LINUX,
m68k_linux_init_abi);
observer_attach_inferior_created (m68k_linux_inferior_created);
}