diff options
Diffstat (limited to 'contrib/gdb/gdb/config/i386/tm-linux.h')
| -rw-r--r-- | contrib/gdb/gdb/config/i386/tm-linux.h | 132 |
1 files changed, 112 insertions, 20 deletions
diff --git a/contrib/gdb/gdb/config/i386/tm-linux.h b/contrib/gdb/gdb/config/i386/tm-linux.h index 417d151..5c549b9 100644 --- a/contrib/gdb/gdb/config/i386/tm-linux.h +++ b/contrib/gdb/gdb/config/i386/tm-linux.h @@ -1,38 +1,130 @@ /* Definitions to target GDB to GNU/Linux on 386. - Copyright 1992, 1993 Free Software Foundation, Inc. -This file is part of GDB. + Copyright 1992, 1993, 1995, 1996, 1998, 1999, 2000, 2001, 2002 Free + Software Foundation, Inc. -This program is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2 of the License, or -(at your option) any later version. + This file is part of GDB. -This program is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. -You should have received a copy of the GNU General Public License -along with this program; if not, write to the Free Software -Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ #ifndef TM_LINUX_H #define TM_LINUX_H -/* FIXME: If nothing else gets added to this file, it could be removed - and configure could just use tm-i386.h instead. -fnf */ +#define I386_GNULINUX_TARGET +#define HAVE_I387_REGS +#ifdef HAVE_PTRACE_GETFPXREGS +#define HAVE_SSE_REGS +#endif #include "i386/tm-i386.h" +#include "tm-linux.h" + +/* Register number for the "orig_eax" pseudo-register. If this + pseudo-register contains a value >= 0 it is interpreted as the + system call number that the kernel is supposed to restart. */ +#define I386_LINUX_ORIG_EAX_REGNUM (NUM_GREGS + NUM_FREGS + NUM_SSE_REGS) + +/* Adjust a few macros to deal with this extra register. */ + +#undef NUM_REGS +#define NUM_REGS (NUM_GREGS + NUM_FREGS + NUM_SSE_REGS + 1) + +#undef MAX_NUM_REGS +#define MAX_NUM_REGS (16 + 16 + 9 + 1) + +#undef REGISTER_BYTES +#define REGISTER_BYTES \ + (SIZEOF_GREGS + SIZEOF_FPU_REGS + SIZEOF_FPU_CTRL_REGS + SIZEOF_SSE_REGS + 4) -/* Offset to saved PC in sigcontext, from <linux/signal.h>. */ -#define SIGCONTEXT_PC_OFFSET 38 +#undef REGISTER_NAME +#define REGISTER_NAME(reg) i386_linux_register_name ((reg)) +extern char *i386_linux_register_name (int reg); -/* We need this file for the SOLIB_TRAMPOLINE stuff. */ +#undef REGISTER_BYTE +#define REGISTER_BYTE(reg) i386_linux_register_byte ((reg)) +extern int i386_linux_register_byte (int reg); -#include "tm-sysv4.h" +#undef REGISTER_RAW_SIZE +#define REGISTER_RAW_SIZE(reg) i386_linux_register_raw_size ((reg)) +extern int i386_linux_register_raw_size (int reg); + +/* GNU/Linux ELF uses stabs-in-ELF with the DWARF register numbering + scheme by default, so we must redefine STAB_REG_TO_REGNUM. This + messes up the floating-point registers for a.out, but there is not + much we can do about that. */ +#undef STAB_REG_TO_REGNUM +#define STAB_REG_TO_REGNUM(reg) i386_dwarf_reg_to_regnum ((reg)) + +/* Use target_specific function to define link map offsets. */ +extern struct link_map_offsets *i386_linux_svr4_fetch_link_map_offsets (void); +#define SVR4_FETCH_LINK_MAP_OFFSETS() i386_linux_svr4_fetch_link_map_offsets () /* The following works around a problem with /usr/include/sys/procfs.h */ #define sys_quotactl 1 -#endif /* #ifndef TM_LINUX_H */ +/* When the i386 Linux kernel calls a signal handler, the return + address points to a bit of code on the stack. These definitions + are used to identify this bit of code as a signal trampoline in + order to support backtracing through calls to signal handlers. */ + +#define IN_SIGTRAMP(pc, name) i386_linux_in_sigtramp (pc, name) +extern int i386_linux_in_sigtramp (CORE_ADDR, char *); + +#undef FRAME_CHAIN +#define FRAME_CHAIN(frame) i386_linux_frame_chain (frame) +extern CORE_ADDR i386_linux_frame_chain (struct frame_info *frame); + +#undef FRAME_SAVED_PC +#define FRAME_SAVED_PC(frame) i386_linux_frame_saved_pc (frame) +extern CORE_ADDR i386_linux_frame_saved_pc (struct frame_info *frame); + +#undef SAVED_PC_AFTER_CALL +#define SAVED_PC_AFTER_CALL(frame) i386_linux_saved_pc_after_call (frame) +extern CORE_ADDR i386_linux_saved_pc_after_call (struct frame_info *); + +#define TARGET_WRITE_PC(pc, ptid) i386_linux_write_pc (pc, ptid) +extern void i386_linux_write_pc (CORE_ADDR pc, ptid_t ptid); + +/* When we call a function in a shared library, and the PLT sends us + into the dynamic linker to find the function's real address, we + need to skip over the dynamic linker call. This function decides + when to skip, and where to skip to. See the comments for + SKIP_SOLIB_RESOLVER at the top of infrun.c. */ +#define SKIP_SOLIB_RESOLVER i386_linux_skip_solib_resolver +extern CORE_ADDR i386_linux_skip_solib_resolver (CORE_ADDR pc); + +/* N_FUN symbols in shared libaries have 0 for their values and need + to be relocated. */ +#define SOFUN_ADDRESS_MAYBE_MISSING + + +/* Support for longjmp. */ + +/* Details about jmp_buf. It's supposed to be an array of integers. */ + +#define JB_ELEMENT_SIZE 4 /* Size of elements in jmp_buf. */ +#define JB_PC 5 /* Array index of saved PC. */ + +/* Figure out where the longjmp will land. Slurp the args out of the + stack. We expect the first arg to be a pointer to the jmp_buf + structure from which we extract the pc (JB_PC) that we will land + at. The pc is copied into ADDR. This routine returns true on + success. */ + +#define GET_LONGJMP_TARGET(addr) get_longjmp_target (addr) +extern int get_longjmp_target (CORE_ADDR *addr); + +#endif /* #ifndef TM_LINUX_H */ |
