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Cleanups and signal handler backtrace fix for GNU/Linux PPC port.

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This commit is contained in:
Kevin Buettner 2000-02-22 18:47:41 +00:00
parent 9a1e79ca63
commit 50c9bd316d
4 changed files with 39 additions and 22 deletions
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19
gdb/ChangeLog
View file

@ -1,3 +1,22 @@
2000-02-22 Kevin Buettner <kevinb@redhat.com>
* ppc-linux-nat.c (supply_gregset, supply_fpregset): Add return
type.
* ppc-linux-tdep.c (ppc_linux_at_sigtramp_return_path): Add
forward declaration.
* ppc-linux-tdep.c (ppc_linux_frame_saved_pc): Handle case
where the next frame is a signal handler caller.
* config/powerpc/tm-linux.h (PUSH_ARGUMENTS): Remove extraneous
undef.
(tm-linux.h): Include.
(tm-sysv4.h): Don't include (directly). config/tm-linux.h will
include this file for us.
(REALTIME_LO, REALTIME_HI): Don't define. These are defined by
config/tm-linux.h for us.
(SOFUN_ADDRESS_MAYBE_MISSING): Define.
2000-02-21 Kevin Buettner <kevinb@redhat.com>
* Makefile.in (ppc-linux-nat.c, ppc-linux-tdep.c): New files.

25
gdb/config/powerpc/tm-linux.h
View file

@ -21,8 +21,9 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#define TM_LINUX_H
#include "powerpc/tm-ppc-eabi.h"
#undef PUSH_ARGUMENTS
/* Avoid warning from redefinition in tm-sysv4.h (included from tm-linux.h) */
#undef SKIP_TRAMPOLINE_CODE
#include "tm-linux.h"
/* We can single step on linux */
#undef SOFTWARE_SINGLE_STEP
@ -44,12 +45,6 @@ extern int at_subroutine_call_instruction_target();
/* Offset to saved PC in sigcontext, from <linux/signal.h>. */
#define SIGCONTEXT_PC_OFFSET 184
/* Avoid warning from redefinition in tm-sysv4.h */
#undef SKIP_TRAMPOLINE_CODE
/* We need this file for the SOLIB_TRAMPOLINE stuff. */
#include "tm-sysv4.h"
extern CORE_ADDR ppc_linux_skip_trampoline_code (CORE_ADDR pc);
#undef SKIP_TRAMPOLINE_CODE
#define SKIP_TRAMPOLINE_CODE(pc) ppc_linux_skip_trampoline_code (pc)
@ -98,16 +93,8 @@ CORE_ADDR ppc_sysv_abi_push_arguments PARAMS ((int, struct value **, CORE_ADDR,
#define PROLOGUE_FIRSTLINE_OVERLAP
#endif
/* Some versions of Linux have real-time signal support in the C library, and
some don't. We have to include this file to find out. */
#include <signal.h>
#ifdef __SIGRTMIN
#define REALTIME_LO __SIGRTMIN
#define REALTIME_HI (__SIGRTMAX + 1)
#else
#define REALTIME_LO 32
#define REALTIME_HI 64
#endif
/* N_FUN symbols in shared libaries have 0 for their values and need
to be relocated. */
#define SOFUN_ADDRESS_MAYBE_MISSING
#endif /* #ifndef TM_LINUX_H */

2
gdb/ppc-linux-nat.c
View file

@ -54,6 +54,7 @@ ppc_register_u_addr (int ustart, int regnum)
return (ustart + 4 * regmap[regnum]);
}
void
supply_gregset (gregset_t * gregsetp)
{
int regi;
@ -66,6 +67,7 @@ supply_gregset (gregset_t * gregsetp)
supply_register (regi, (char *) (regp + regmap[regi]));
}
void
supply_fpregset (fpregset_t * fpregsetp)
{
int regi;

15
gdb/ppc-linux-tdep.c
View file

@ -95,6 +95,8 @@
#define PPC_LINUX_PT_FPR31 (PPC_LINUX_PT_FPR0 + 2*31)
#define PPC_LINUX_PT_FPSCR (PPC_LINUX_PT_FPR0 + 2*32 + 1)
int ppc_linux_at_sigtramp_return_path (CORE_ADDR pc);
/* Determine if pc is in a signal trampoline...
Ha! That's not what this does at all. wait_for_inferior in infrun.c
@ -312,12 +314,19 @@ ppc_linux_frame_saved_pc (struct frame_info *fi)
if (fi->signal_handler_caller)
{
CORE_ADDR regs_addr =
read_memory_integer (fi->frame + PPC_LINUX_REGS_PTR_OFFSET, 4);
read_memory_integer (fi->frame + PPC_LINUX_REGS_PTR_OFFSET, 4);
/* return the NIP in the regs array */
return read_memory_integer (regs_addr + 4 * PPC_LINUX_PT_NIP, 4);
}
return rs6000_frame_saved_pc (fi);
else if (fi->next && fi->next->signal_handler_caller)
{
CORE_ADDR regs_addr =
read_memory_integer (fi->next->frame + PPC_LINUX_REGS_PTR_OFFSET, 4);
/* return LNK in the regs array */
return read_memory_integer (regs_addr + 4 * PPC_LINUX_PT_LNK, 4);
}
else
return rs6000_frame_saved_pc (fi);
}
void