diff options
Diffstat (limited to 'gdb/m-sun3.h')
| -rw-r--r-- | gdb/m-sun3.h | 99 |
1 files changed, 55 insertions, 44 deletions
diff --git a/gdb/m-sun3.h b/gdb/m-sun3.h index 1ac0ee1..c6dee57 100644 --- a/gdb/m-sun3.h +++ b/gdb/m-sun3.h @@ -1,27 +1,31 @@ /* Parameters for execution on a Sun, for GDB, the GNU debugger. - Copyright (C) 1986, 1987 Free Software Foundation, Inc. + Copyright (C) 1986, 1987, 1989 Free Software Foundation, Inc. -GDB is distributed in the hope that it will be useful, but WITHOUT ANY -WARRANTY. No author or distributor accepts responsibility to anyone -for the consequences of using it or for whether it serves any -particular purpose or works at all, unless he says so in writing. -Refer to the GDB General Public License for full details. +This file is part of GDB. -Everyone is granted permission to copy, modify and redistribute GDB, -but only under the conditions described in the GDB General Public -License. A copy of this license is supposed to have been given to you -along with GDB so you can know your rights and responsibilities. It -should be in a file named COPYING. Among other things, the copyright -notice and this notice must be preserved on all copies. +GDB 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 1, or (at your option) +any later version. -In other words, go ahead and share GDB, but don't try to stop -anyone else from sharing it farther. Help stamp out software hoarding! -*/ +GDB 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 GDB; see the file COPYING. If not, write to +the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ #ifndef sun3 #define sun3 #endif +/* Define the bit, byte, and word ordering of the machine. */ +#define BITS_BIG_ENDIAN +#define BYTES_BIG_ENDIAN +#define WORDS_BIG_ENDIAN + /* Get rid of any system-imposed stack limit if possible. */ #define SET_STACK_LIMIT_HUGE @@ -45,9 +49,9 @@ anyone else from sharing it farther. Help stamp out software hoarding! #define SKIP_PROLOGUE(pc) \ { register int op = read_memory_integer (pc, 2); \ - if (op == 0047126) \ + if (op == 0047126) \ pc += 4; /* Skip link #word */ \ - else if (op == 0044016) \ + else if (op == 0044016) \ pc += 6; /* Skip link #long */ \ } @@ -78,8 +82,10 @@ read_memory_integer (read_register (SP_REGNUM), 4) #define DECR_PC_AFTER_BREAK 2 /* Nonzero if instruction at PC is a return instruction. */ +/* Allow any of the return instructions, including a trapv and a return + from interupt. */ -#define ABOUT_TO_RETURN(pc) (read_memory_integer (pc, 2) == 0x4e75) +#define ABOUT_TO_RETURN(pc) ((read_memory_integer (pc, 2) & ~0x3) == 0x4e74) /* Return 1 if P points to an invalid floating point value. */ @@ -223,10 +229,6 @@ read_memory_integer (read_register (SP_REGNUM), 4) #define ATTACH_DETACH -/* It is safe to look for symsegs on a Sun, because Sun's ld - does not screw up with random garbage at end of file. */ - -#define READ_GDB_SYMSEGS /* Describe the pointer in each stack frame to the previous stack frame (its caller). */ @@ -244,15 +246,24 @@ read_memory_integer (read_register (SP_REGNUM), 4) /* In the case of the Sun, the frame's nominal address is the address of a 4-byte word containing the calling frame's address. */ -#define FRAME_CHAIN(thisframe) (read_memory_integer ((thisframe)->frame, 4)) +#define FRAME_CHAIN(thisframe) \ + (outside_startup_file ((thisframe)->pc) ? \ + read_memory_integer ((thisframe)->frame, 4) :\ + 0) #define FRAME_CHAIN_VALID(chain, thisframe) \ - (chain != 0 && (FRAME_SAVED_PC (thisframe) >= first_object_file_end)) + (chain != 0 && (outside_startup_file (FRAME_SAVED_PC (thisframe)))) #define FRAME_CHAIN_COMBINE(chain, thisframe) (chain) /* Define other aspects of the stack frame. */ +/* 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. */ +#define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \ + FRAMELESS_LOOK_FOR_PROLOGUE(FI, FRAMELESS) + #define FRAME_SAVED_PC(FRAME) (read_memory_integer ((FRAME)->frame + 4, 4)) #define FRAME_ARGS_ADDRESS(fi) ((fi)->frame) @@ -382,29 +393,29 @@ read_memory_integer (read_register (SP_REGNUM), 4) restoring all saved registers. */ #define POP_FRAME \ -{ register FRAME frame = get_current_frame (); \ - register CORE_ADDR fp; \ - register int regnum; \ - struct frame_saved_regs fsr; \ - struct frame_info *fi; \ - char raw_buffer[12]; \ - fi = get_frame_info (frame); \ - fp = fi->frame; \ - get_frame_saved_regs (fi, &fsr); \ - for (regnum = FP0_REGNUM + 7; regnum >= FP0_REGNUM; regnum--) \ - if (fsr.regs[regnum]) \ - { read_memory (fsr.regs[regnum], raw_buffer, 12); \ +{ register FRAME frame = get_current_frame (); \ + register CORE_ADDR fp; \ + register int regnum; \ + struct frame_saved_regs fsr; \ + struct frame_info *fi; \ + char raw_buffer[12]; \ + fi = get_frame_info (frame); \ + fp = fi->frame; \ + get_frame_saved_regs (fi, &fsr); \ + for (regnum = FP0_REGNUM + 7; regnum >= FP0_REGNUM; regnum--) \ + if (fsr.regs[regnum]) \ + { read_memory (fsr.regs[regnum], raw_buffer, 12); \ write_register_bytes (REGISTER_BYTE (regnum), raw_buffer, 12); }\ - for (regnum = FP_REGNUM - 1; regnum >= 0; regnum--) \ - if (fsr.regs[regnum]) \ + for (regnum = FP_REGNUM - 1; regnum >= 0; regnum--) \ + if (fsr.regs[regnum]) \ write_register (regnum, read_memory_integer (fsr.regs[regnum], 4)); \ - if (fsr.regs[PS_REGNUM]) \ + if (fsr.regs[PS_REGNUM]) \ write_register (PS_REGNUM, read_memory_integer (fsr.regs[PS_REGNUM], 4)); \ - write_register (FP_REGNUM, read_memory_integer (fp, 4)); \ - write_register (PC_REGNUM, read_memory_integer (fp + 4, 4)); \ - write_register (SP_REGNUM, fp + 8); \ - flush_cached_frames (); \ - set_current_frame (create_new_frame (read_register (FP_REGNUM),\ + write_register (FP_REGNUM, read_memory_integer (fp, 4)); \ + write_register (PC_REGNUM, read_memory_integer (fp + 4, 4)); \ + write_register (SP_REGNUM, fp + 8); \ + flush_cached_frames (); \ + set_current_frame (create_new_frame (read_register (FP_REGNUM), \ read_pc ())); } /* This sequence of words is the instructions |