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Add am33 linux signal frame support.

newlib-autotools-branch
Kevin Buettner 21 years ago
parent
e92e42f575
commit
f9ec92b6cb
3 changed files with 261 additions and 1 deletions
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  1. 20
      gdb/ChangeLog
  2. 3
      gdb/Makefile.in
  3. 239
      gdb/mn10300-linux-tdep.c

20
gdb/ChangeLog
View File

@ -1,3 +1,23 @@
2006-02-28 Kevin Buettner <kevinb@redhat.com>
* Makefile.in (mn10300-linux-tdep.o): Update dependencies.
* mn10300-linux-tdep.c (frame.h, trad-frame.h, tramp-frame.h):
Include.
(am33_linux_sigframe_cache_init): New function.
(am33_linux_sigframe, am33_linux_rt_sigframe): New signal frame
descriptions.
(AM33_SIGCONTEXT_D0, AM33_SIGCONTEXT_D1, AM33_SIGCONTEXT_D2)
(AM33_SIGCONTEXT_D3, AM33_SIGCONTEXT_A0, AM33_SIGCONTEXT_A1)
(AM33_SIGCONTEXT_A2, AM33_SIGCONTEXT_A3, AM33_SIGCONTEXT_E0)
(AM33_SIGCONTEXT_E1, AM33_SIGCONTEXT_E2, AM33_SIGCONTEXT_E3)
(AM33_SIGCONTEXT_E4, AM33_SIGCONTEXT_E5, AM33_SIGCONTEXT_E6)
(AM33_SIGCONTEXT_E7, AM33_SIGCONTEXT_LAR, AM33_SIGCONTEXT_LIR)
(AM33_SIGCONTEXT_MDR, AM33_SIGCONTEXT_MCVF, AM33_SIGCONTEXT_MCRL)
(AM33_SIGCONTEXT_MCRH, AM33_SIGCONTEXT_MDRQ, AM33_SIGCONTEXT_SP)
(AM33_SIGCONTEXT_EPSW, AM33_SIGCONTEXT_PC, AM33_SIGCONTEXT_FPUCONTEXT):
New constants.
(am33_linux_init_osabi): Register signal frame unwinders.
2006-02-28 Kevin Buettner <kevinb@redhat.com>
* mn10300-tdep.c (mn10300_analyze_prologue): Implement backtrack

3
gdb/Makefile.in
View File

@ -2326,7 +2326,8 @@ mipsv4-nat.o: mipsv4-nat.c $(defs_h) $(inferior_h) $(gdbcore_h) $(target_h) \
$(regcache_h) $(gregset_h)
mn10300-linux-tdep.o: mn10300-linux-tdep.c $(defs_h) $(gdbcore_h) \
$(gdb_string_h) $(regcache_h) $(mn10300_tdep_h) $(gdb_assert_h) \
$(bfd_h) $(elf_bfd_h) $(osabi_h) $(regset_h) $(solib_svr4_h)
$(bfd_h) $(elf_bfd_h) $(osabi_h) $(regset_h) $(solib_svr4_h) \
$(frame_h) $(trad_frame_h) $(tramp_frame_h)
mn10300-tdep.o: mn10300-tdep.c $(defs_h) $(arch_utils_h) $(dis_asm_h) \
$(gdbtypes_h) $(regcache_h) $(gdb_string_h) $(gdb_assert_h) \
$(frame_h) $(frame_unwind_h) $(frame_base_h) $(trad_frame_h) \

239
gdb/mn10300-linux-tdep.c
View File

@ -30,6 +30,9 @@
#include "osabi.h"
#include "regset.h"
#include "solib-svr4.h"
#include "frame.h"
#include "trad-frame.h"
#include "tramp-frame.h"
#include <stdlib.h>
@ -467,7 +470,240 @@ am33_regset_from_core_section (struct gdbarch *gdbarch,
am33_supply_gregset_method,
am33_collect_gregset_method);
}
static void
am33_linux_sigframe_cache_init (const struct tramp_frame *self,
struct frame_info *next_frame,
struct trad_frame_cache *this_cache,
CORE_ADDR func);
static const struct tramp_frame am33_linux_sigframe = {
SIGTRAMP_FRAME,
1,
{
/* mov 119,d0 */
{ 0x2c, -1 },
{ 0x77, -1 },
{ 0x00, -1 },
/* syscall 0 */
{ 0xf0, -1 },
{ 0xe0, -1 },
{ TRAMP_SENTINEL_INSN, -1 }
},
am33_linux_sigframe_cache_init
};
static const struct tramp_frame am33_linux_rt_sigframe = {
SIGTRAMP_FRAME,
1,
{
/* mov 173,d0 */
{ 0x2c, -1 },
{ 0xad, -1 },
{ 0x00, -1 },
/* syscall 0 */
{ 0xf0, -1 },
{ 0xe0, -1 },
{ TRAMP_SENTINEL_INSN, -1 }
},
am33_linux_sigframe_cache_init
};
/* Relevant struct definitions for signal handling...
From arch/mn10300/kernel/sigframe.h:
struct sigframe
{
void (*pretcode)(void);
int sig;
struct sigcontext sc;
struct fpucontext fpuctx;
unsigned long extramask[_NSIG_WORDS-1];
char retcode[8];
};
struct rt_sigframe
{
void (*pretcode)(void);
int sig;
struct siginfo *pinfo;
void *puc;
struct siginfo info;
struct ucontext uc;
struct fpucontext fpuctx;
char retcode[8];
};
From include/asm-mn10300/ucontext.h:
struct ucontext {
unsigned long uc_flags;
struct ucontext *uc_link;
stack_t uc_stack;
struct sigcontext uc_mcontext;
sigset_t uc_sigmask;
};
From include/asm-mn10300/sigcontext.h:
struct fpucontext {
unsigned long fs[32];
unsigned long fpcr;
};
struct sigcontext {
unsigned long d0;
unsigned long d1;
unsigned long d2;
unsigned long d3;
unsigned long a0;
unsigned long a1;
unsigned long a2;
unsigned long a3;
unsigned long e0;
unsigned long e1;
unsigned long e2;
unsigned long e3;
unsigned long e4;
unsigned long e5;
unsigned long e6;
unsigned long e7;
unsigned long lar;
unsigned long lir;
unsigned long mdr;
unsigned long mcvf;
unsigned long mcrl;
unsigned long mcrh;
unsigned long mdrq;
unsigned long sp;
unsigned long epsw;
unsigned long pc;
struct fpucontext *fpucontext;
unsigned long oldmask;
}; */
#define AM33_SIGCONTEXT_D0 0
#define AM33_SIGCONTEXT_D1 4
#define AM33_SIGCONTEXT_D2 8
#define AM33_SIGCONTEXT_D3 12
#define AM33_SIGCONTEXT_A0 16
#define AM33_SIGCONTEXT_A1 20
#define AM33_SIGCONTEXT_A2 24
#define AM33_SIGCONTEXT_A3 28
#define AM33_SIGCONTEXT_E0 32
#define AM33_SIGCONTEXT_E1 36
#define AM33_SIGCONTEXT_E2 40
#define AM33_SIGCONTEXT_E3 44
#define AM33_SIGCONTEXT_E4 48
#define AM33_SIGCONTEXT_E5 52
#define AM33_SIGCONTEXT_E6 56
#define AM33_SIGCONTEXT_E7 60
#define AM33_SIGCONTEXT_LAR 64
#define AM33_SIGCONTEXT_LIR 68
#define AM33_SIGCONTEXT_MDR 72
#define AM33_SIGCONTEXT_MCVF 76
#define AM33_SIGCONTEXT_MCRL 80
#define AM33_SIGCONTEXT_MCRH 84
#define AM33_SIGCONTEXT_MDRQ 88
#define AM33_SIGCONTEXT_SP 92
#define AM33_SIGCONTEXT_EPSW 96
#define AM33_SIGCONTEXT_PC 100
#define AM33_SIGCONTEXT_FPUCONTEXT 104
static void
am33_linux_sigframe_cache_init (const struct tramp_frame *self,
struct frame_info *next_frame,
struct trad_frame_cache *this_cache,
CORE_ADDR func)
{
CORE_ADDR sc_base, fpubase;
int i;
sc_base = frame_unwind_register_unsigned (next_frame, E_SP_REGNUM);
if (self == &am33_linux_sigframe)
{
sc_base += 8;
}
else
{
sc_base += 12;
sc_base = get_frame_memory_unsigned (next_frame, sc_base, 4);
sc_base += 20;
}
trad_frame_set_reg_addr (this_cache, E_D0_REGNUM,
sc_base + AM33_SIGCONTEXT_D0);
trad_frame_set_reg_addr (this_cache, E_D1_REGNUM,
sc_base + AM33_SIGCONTEXT_D1);
trad_frame_set_reg_addr (this_cache, E_D2_REGNUM,
sc_base + AM33_SIGCONTEXT_D2);
trad_frame_set_reg_addr (this_cache, E_D3_REGNUM,
sc_base + AM33_SIGCONTEXT_D3);
trad_frame_set_reg_addr (this_cache, E_A0_REGNUM,
sc_base + AM33_SIGCONTEXT_A0);
trad_frame_set_reg_addr (this_cache, E_A1_REGNUM,
sc_base + AM33_SIGCONTEXT_A1);
trad_frame_set_reg_addr (this_cache, E_A2_REGNUM,
sc_base + AM33_SIGCONTEXT_A2);
trad_frame_set_reg_addr (this_cache, E_A3_REGNUM,
sc_base + AM33_SIGCONTEXT_A3);
trad_frame_set_reg_addr (this_cache, E_E0_REGNUM,
sc_base + AM33_SIGCONTEXT_E0);
trad_frame_set_reg_addr (this_cache, E_E1_REGNUM,
sc_base + AM33_SIGCONTEXT_E1);
trad_frame_set_reg_addr (this_cache, E_E2_REGNUM,
sc_base + AM33_SIGCONTEXT_E2);
trad_frame_set_reg_addr (this_cache, E_E3_REGNUM,
sc_base + AM33_SIGCONTEXT_E3);
trad_frame_set_reg_addr (this_cache, E_E4_REGNUM,
sc_base + AM33_SIGCONTEXT_E4);
trad_frame_set_reg_addr (this_cache, E_E5_REGNUM,
sc_base + AM33_SIGCONTEXT_E5);
trad_frame_set_reg_addr (this_cache, E_E6_REGNUM,
sc_base + AM33_SIGCONTEXT_E6);
trad_frame_set_reg_addr (this_cache, E_E7_REGNUM,
sc_base + AM33_SIGCONTEXT_E7);
trad_frame_set_reg_addr (this_cache, E_LAR_REGNUM,
sc_base + AM33_SIGCONTEXT_LAR);
trad_frame_set_reg_addr (this_cache, E_LIR_REGNUM,
sc_base + AM33_SIGCONTEXT_LIR);
trad_frame_set_reg_addr (this_cache, E_MDR_REGNUM,
sc_base + AM33_SIGCONTEXT_MDR);
trad_frame_set_reg_addr (this_cache, E_MCVF_REGNUM,
sc_base + AM33_SIGCONTEXT_MCVF);
trad_frame_set_reg_addr (this_cache, E_MCRL_REGNUM,
sc_base + AM33_SIGCONTEXT_MCRL);
trad_frame_set_reg_addr (this_cache, E_MDRQ_REGNUM,
sc_base + AM33_SIGCONTEXT_MDRQ);
trad_frame_set_reg_addr (this_cache, E_SP_REGNUM,
sc_base + AM33_SIGCONTEXT_SP);
trad_frame_set_reg_addr (this_cache, E_PSW_REGNUM,
sc_base + AM33_SIGCONTEXT_EPSW);
trad_frame_set_reg_addr (this_cache, E_PC_REGNUM,
sc_base + AM33_SIGCONTEXT_PC);
fpubase = get_frame_memory_unsigned (next_frame,
sc_base + AM33_SIGCONTEXT_FPUCONTEXT, 4);
if (fpubase)
{
for (i = 0; i < 32; i++)
{
trad_frame_set_reg_addr (this_cache, E_FS0_REGNUM + i,
fpubase + 4 * i);
}
trad_frame_set_reg_addr (this_cache, E_FPCR_REGNUM, fpubase + 4 * 32);
}
trad_frame_set_id (this_cache, frame_id_build (sc_base, func));
}
/* AM33 Linux osabi has been recognized.
Now's our chance to register our corefile handling. */
@ -478,6 +714,9 @@ am33_linux_init_osabi (struct gdbarch_info gdbinfo, struct gdbarch *gdbarch)
am33_regset_from_core_section);
set_solib_svr4_fetch_link_map_offsets
(gdbarch, svr4_ilp32_fetch_link_map_offsets);
tramp_frame_prepend_unwinder (gdbarch, &am33_linux_sigframe);
tramp_frame_prepend_unwinder (gdbarch, &am33_linux_rt_sigframe);
}
void

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