diff options
| -rw-r--r-- | gdb/config/i386/i386os9k.mt | 3 | ||||
| -rw-r--r-- | gdb/config/i386/tm-i386os9k.h | 87 |
2 files changed, 90 insertions, 0 deletions
diff --git a/gdb/config/i386/i386os9k.mt b/gdb/config/i386/i386os9k.mt new file mode 100644 index 0000000..78ae18b --- /dev/null +++ b/gdb/config/i386/i386os9k.mt @@ -0,0 +1,3 @@ +# Target: Intel 386 running BSD +TDEPFILES= exec.o i386-tdep.o i386-pinsn.o remote-os9k.o +TM_FILE= tm-i386os9k.h diff --git a/gdb/config/i386/tm-i386os9k.h b/gdb/config/i386/tm-i386os9k.h new file mode 100644 index 0000000..253b8c1 --- /dev/null +++ b/gdb/config/i386/tm-i386os9k.h @@ -0,0 +1,87 @@ +/* Macro definitions for i386 running under BSD Unix. + Copyright 1986, 1987, 1989, 1991, 1992, 1993 Free Software Foundation, Inc. + +This file is part of GDB. + +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 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +/* Override number of expected traps from sysv. */ +#define START_INFERIOR_TRAPS_EXPECTED 2 + +/* Most definitions from sysv could be used. */ +#include "i386/tm-i386v.h" + +/* 386BSD cannot handle the segment registers. */ +/* BSDI can't handle them either. */ +#if 0 +#undef NUM_REGS +#define NUM_REGS 10 +#endif 0 + +#undef REGISTER_NAMES +#define REGISTER_NAMES { "eax", "ecx", "edx", "ebx", \ + "esp", "ebp", "esi", "edi", \ + "eip", "eflags", "cs", "ss", \ + "ds", "es", "fs", "gs", \ + } + +#define DATABASE_REG 3 /* ebx */ + +/* On 386 bsd, sigtramp is above the user stack and immediately below + the user area. Using constants here allows for cross debugging. + These are tested for BSDI but should work on 386BSD. */ +#define SIGTRAMP_START 0xfdbfdfc0 +#define SIGTRAMP_END 0xfdbfe000 + +/* The following redefines make backtracing through sigtramp work. + They manufacture a fake sigtramp frame and obtain the saved pc in sigtramp + from the sigcontext structure which is pushed by the kernel on the + user stack, along with a pointer to it. */ + +/* FRAME_CHAIN takes a frame's nominal address and produces the frame's + chain-pointer. + In the case of the i386, the frame's nominal address + is the address of a 4-byte word containing the calling frame's address. */ +#undef FRAME_CHAIN +#define FRAME_CHAIN(thisframe) \ + (thisframe->signal_handler_caller \ + ? thisframe->frame \ + : (!inside_entry_file ((thisframe)->pc) \ + ? read_memory_integer ((thisframe)->frame, 4) \ + : 0)) + +/* A macro that tells us whether the function invocation represented + by FI does not have a frame on the stack associated with it. If it + does not, FRAMELESS is set to 1, else 0. */ +#undef FRAMELESS_FUNCTION_INVOCATION +#define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \ + do { \ + if ((FI)->signal_handler_caller) \ + (FRAMELESS) = 0; \ + else \ + (FRAMELESS) = frameless_look_for_prologue(FI); \ + } while (0) + +/* Saved Pc. Get it from sigcontext if within sigtramp. */ + +/* Offset to saved PC in sigcontext, from <sys/signal.h>. */ +#define SIGCONTEXT_PC_OFFSET 20 + +#undef FRAME_SAVED_PC(FRAME) +#define FRAME_SAVED_PC(FRAME) \ + (((FRAME)->signal_handler_caller \ + ? sigtramp_saved_pc (FRAME) \ + : read_memory_integer ((FRAME)->frame + 4, 4)) \ + ) |