diff options
Diffstat (limited to 'gdb/gould-tdep.c')
| -rw-r--r-- | gdb/gould-tdep.c | 310 |
1 files changed, 310 insertions, 0 deletions
diff --git a/gdb/gould-tdep.c b/gdb/gould-tdep.c new file mode 100644 index 0000000..1916cc2 --- /dev/null +++ b/gdb/gould-tdep.c @@ -0,0 +1,310 @@ +/* OBSOLETE /* GOULD RISC target-dependent code for GDB, the GNU debugger. */ +/* OBSOLETE Copyright 1986, 1987, 1989, 1991 Free Software Foundation, Inc. */ +/* OBSOLETE */ +/* OBSOLETE This file is part of GDB. */ +/* OBSOLETE */ +/* OBSOLETE This program is free software; you can redistribute it and/or modify */ +/* OBSOLETE it under the terms of the GNU General Public License as published by */ +/* OBSOLETE the Free Software Foundation; either version 2 of the License, or */ +/* OBSOLETE (at your option) any later version. */ +/* OBSOLETE */ +/* OBSOLETE This program is distributed in the hope that it will be useful, */ +/* OBSOLETE but WITHOUT ANY WARRANTY; without even the implied warranty of */ +/* OBSOLETE MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */ +/* OBSOLETE GNU General Public License for more details. */ +/* OBSOLETE */ +/* OBSOLETE You should have received a copy of the GNU General Public License */ +/* OBSOLETE along with this program; if not, write to the Free Software */ +/* OBSOLETE Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *x/ */ +/* OBSOLETE */ +/* OBSOLETE #include "defs.h" */ +/* OBSOLETE #include "symtab.h" */ +/* OBSOLETE #include "frame.h" */ +/* OBSOLETE #include "gdbcore.h" */ +/* OBSOLETE #if defined GOULD_PN */ +/* OBSOLETE #include "opcode/pn.h" */ +/* OBSOLETE #else */ +/* OBSOLETE #include "opcode/np1.h" */ +/* OBSOLETE #endif */ +/* OBSOLETE */ +/* OBSOLETE /* GOULD RISC instructions are never longer than this many bytes. *x/ */ +/* OBSOLETE #define MAXLEN 4 */ +/* OBSOLETE */ +/* OBSOLETE /* Number of elements in the opcode table. *x/ */ +/* OBSOLETE #define NOPCODES (sizeof gld_opcodes / sizeof gld_opcodes[0]) */ +/* OBSOLETE */ +/* OBSOLETE int */ +/* OBSOLETE gould_frame_chain_valid (chain, fi) */ +/* OBSOLETE CORE_ADDR chain; */ +/* OBSOLETE struct frame_info *fi; /* not used here *x/ */ +/* OBSOLETE { */ +/* OBSOLETE return (chain != 0 && chain != (thisframe)->frame); */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE /* Both gcc and cc return small structs in registers (i.e. in GDB */ +/* OBSOLETE terminology, small structs don't use the struct return convention). *x/ */ +/* OBSOLETE int */ +/* OBSOLETE gould_use_struct_convention (gcc_p, type) */ +/* OBSOLETE int gcc_p; */ +/* OBSOLETE struct type *type; */ +/* OBSOLETE { */ +/* OBSOLETE return (TYPE_LENGTH(type) > 8); */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE */ +/* OBSOLETE */ +/* OBSOLETE /* Print the GOULD instruction at address MEMADDR in debugged memory, */ +/* OBSOLETE on STREAM. Returns length of the instruction, in bytes. *x/ */ +/* OBSOLETE */ +/* OBSOLETE int */ +/* OBSOLETE gould_print_insn (memaddr, stream) */ +/* OBSOLETE CORE_ADDR memaddr; */ +/* OBSOLETE FILE *stream; */ +/* OBSOLETE { */ +/* OBSOLETE unsigned char buffer[MAXLEN]; */ +/* OBSOLETE register int i; */ +/* OBSOLETE register char *d; */ +/* OBSOLETE register int bestmask; */ +/* OBSOLETE unsigned best; */ +/* OBSOLETE int temp, index, bestlen; */ +/* OBSOLETE */ +/* OBSOLETE read_memory (memaddr, buffer, MAXLEN); */ +/* OBSOLETE */ +/* OBSOLETE bestmask = 0; */ +/* OBSOLETE index = -1; */ +/* OBSOLETE best = 0xffffffff; */ +/* OBSOLETE for (i = 0; i < NOPCODES; i++) */ +/* OBSOLETE { */ +/* OBSOLETE register unsigned int opcode = gld_opcodes[i].opcode; */ +/* OBSOLETE register unsigned int mask = gld_opcodes[i].mask; */ +/* OBSOLETE register unsigned int len = gld_opcodes[i].length; */ +/* OBSOLETE register unsigned int test; */ +/* OBSOLETE */ +/* OBSOLETE /* Get possible opcode bytes into integer *x/ */ +/* OBSOLETE test = buffer[0] << 24; */ +/* OBSOLETE test |= buffer[1] << 16; */ +/* OBSOLETE test |= buffer[2] << 8; */ +/* OBSOLETE test |= buffer[3]; */ +/* OBSOLETE */ +/* OBSOLETE /* Mask with opcode and see if match *x/ */ +/* OBSOLETE if ((opcode & mask) == (test & mask)) */ +/* OBSOLETE { */ +/* OBSOLETE /* See if second or third match *x/ */ +/* OBSOLETE if (index >= 0) */ +/* OBSOLETE { */ +/* OBSOLETE /* Take new one if it looks good *x/ */ +/* OBSOLETE if (bestlen == MAXLEN && len == MAXLEN) */ +/* OBSOLETE { */ +/* OBSOLETE /* See if lower bits matched *x/ */ +/* OBSOLETE if (((bestmask & 3) == 0) && */ +/* OBSOLETE ((mask & 3) != 0)) */ +/* OBSOLETE { */ +/* OBSOLETE bestmask = mask; */ +/* OBSOLETE bestlen = len; */ +/* OBSOLETE best = test; */ +/* OBSOLETE index = i; */ +/* OBSOLETE } */ +/* OBSOLETE } */ +/* OBSOLETE } */ +/* OBSOLETE else */ +/* OBSOLETE { */ +/* OBSOLETE /* First match, save it *x/ */ +/* OBSOLETE bestmask = mask; */ +/* OBSOLETE bestlen = len; */ +/* OBSOLETE best = test; */ +/* OBSOLETE index = i; */ +/* OBSOLETE } */ +/* OBSOLETE } */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE /* Handle undefined instructions. *x/ */ +/* OBSOLETE if (index < 0) */ +/* OBSOLETE { */ +/* OBSOLETE fprintf (stream, "undefined 0%o",(buffer[0]<<8)+buffer[1]); */ +/* OBSOLETE return 2; */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE /* Print instruction name *x/ */ +/* OBSOLETE fprintf (stream, "%-12s", gld_opcodes[index].name); */ +/* OBSOLETE */ +/* OBSOLETE /* Adjust if short instruction *x/ */ +/* OBSOLETE if (gld_opcodes[index].length < 4) */ +/* OBSOLETE { */ +/* OBSOLETE best >>= 16; */ +/* OBSOLETE i = 0; */ +/* OBSOLETE } */ +/* OBSOLETE else */ +/* OBSOLETE { */ +/* OBSOLETE i = 16; */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE /* Dump out instruction arguments *x/ */ +/* OBSOLETE for (d = gld_opcodes[index].args; *d; ++d) */ +/* OBSOLETE { */ +/* OBSOLETE switch (*d) */ +/* OBSOLETE { */ +/* OBSOLETE case 'f': */ +/* OBSOLETE fprintf (stream, "%d", (best >> (7 + i)) & 7); */ +/* OBSOLETE break; */ +/* OBSOLETE case 'r': */ +/* OBSOLETE fprintf (stream, "r%d", (best >> (7 + i)) & 7); */ +/* OBSOLETE break; */ +/* OBSOLETE case 'R': */ +/* OBSOLETE fprintf (stream, "r%d", (best >> (4 + i)) & 7); */ +/* OBSOLETE break; */ +/* OBSOLETE case 'b': */ +/* OBSOLETE fprintf (stream, "b%d", (best >> (7 + i)) & 7); */ +/* OBSOLETE break; */ +/* OBSOLETE case 'B': */ +/* OBSOLETE fprintf (stream, "b%d", (best >> (4 + i)) & 7); */ +/* OBSOLETE break; */ +/* OBSOLETE case 'v': */ +/* OBSOLETE fprintf (stream, "b%d", (best >> (7 + i)) & 7); */ +/* OBSOLETE break; */ +/* OBSOLETE case 'V': */ +/* OBSOLETE fprintf (stream, "b%d", (best >> (4 + i)) & 7); */ +/* OBSOLETE break; */ +/* OBSOLETE case 'X': */ +/* OBSOLETE temp = (best >> 20) & 7; */ +/* OBSOLETE if (temp) */ +/* OBSOLETE fprintf (stream, "r%d", temp); */ +/* OBSOLETE else */ +/* OBSOLETE putc ('0', stream); */ +/* OBSOLETE break; */ +/* OBSOLETE case 'A': */ +/* OBSOLETE temp = (best >> 16) & 7; */ +/* OBSOLETE if (temp) */ +/* OBSOLETE fprintf (stream, "(b%d)", temp); */ +/* OBSOLETE break; */ +/* OBSOLETE case 'S': */ +/* OBSOLETE fprintf (stream, "#%d", best & 0x1f); */ +/* OBSOLETE break; */ +/* OBSOLETE case 'I': */ +/* OBSOLETE fprintf (stream, "#%x", best & 0xffff); */ +/* OBSOLETE break; */ +/* OBSOLETE case 'O': */ +/* OBSOLETE fprintf (stream, "%x", best & 0xffff); */ +/* OBSOLETE break; */ +/* OBSOLETE case 'h': */ +/* OBSOLETE fprintf (stream, "%d", best & 0xfffe); */ +/* OBSOLETE break; */ +/* OBSOLETE case 'd': */ +/* OBSOLETE fprintf (stream, "%d", best & 0xfffc); */ +/* OBSOLETE break; */ +/* OBSOLETE case 'T': */ +/* OBSOLETE fprintf (stream, "%d", (best >> 8) & 0xff); */ +/* OBSOLETE break; */ +/* OBSOLETE case 'N': */ +/* OBSOLETE fprintf (stream, "%d", best & 0xff); */ +/* OBSOLETE break; */ +/* OBSOLETE default: */ +/* OBSOLETE putc (*d, stream); */ +/* OBSOLETE break; */ +/* OBSOLETE } */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE /* Return length of instruction *x/ */ +/* OBSOLETE return (gld_opcodes[index].length); */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE /* */ +/* OBSOLETE * Find the number of arguments to a function. */ +/* OBSOLETE *x/ */ +/* OBSOLETE findarg(frame) */ +/* OBSOLETE struct frame_info *frame; */ +/* OBSOLETE { */ +/* OBSOLETE register struct symbol *func; */ +/* OBSOLETE register unsigned pc; */ +/* OBSOLETE */ +/* OBSOLETE #ifdef notdef */ +/* OBSOLETE /* find starting address of frame function *x/ */ +/* OBSOLETE pc = get_pc_function_start (frame->pc); */ +/* OBSOLETE */ +/* OBSOLETE /* find function symbol info *x/ */ +/* OBSOLETE func = find_pc_function (pc); */ +/* OBSOLETE */ +/* OBSOLETE /* call blockframe code to look for match *x/ */ +/* OBSOLETE if (func != NULL) */ +/* OBSOLETE return (func->value.block->nsyms / sizeof(int)); */ +/* OBSOLETE #endif */ +/* OBSOLETE */ +/* OBSOLETE return (-1); */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE /* */ +/* OBSOLETE * In the case of the NPL, the frame's norminal address is Br2 and the */ +/* OBSOLETE * previous routines frame is up the stack X bytes. Finding out what */ +/* OBSOLETE * 'X' is can be tricky. */ +/* OBSOLETE * */ +/* OBSOLETE * 1.) stored in the code function header xA(Br1). */ +/* OBSOLETE * 2.) must be careful of recurssion. */ +/* OBSOLETE *x/ */ +/* OBSOLETE CORE_ADDR */ +/* OBSOLETE findframe(thisframe) */ +/* OBSOLETE struct frame_info *thisframe; */ +/* OBSOLETE { */ +/* OBSOLETE register CORE_ADDR pointer; */ +/* OBSOLETE CORE_ADDR framechain(); */ +/* OBSOLETE #if 0 */ +/* OBSOLETE struct frame_info *frame; */ +/* OBSOLETE */ +/* OBSOLETE /* Setup toplevel frame structure *x/ */ +/* OBSOLETE frame->pc = read_pc(); */ +/* OBSOLETE frame->next_frame = 0; */ +/* OBSOLETE frame->frame = read_register (SP_REGNUM); /* Br2 *x/ */ +/* OBSOLETE */ +/* OBSOLETE /* Search for this frame (start at current Br2) *x/ */ +/* OBSOLETE do */ +/* OBSOLETE { */ +/* OBSOLETE pointer = framechain(frame); */ +/* OBSOLETE frame->next_frame = frame->frame; */ +/* OBSOLETE frame->frame = pointer; */ +/* OBSOLETE frame->pc = FRAME_SAVED_PC(frame); */ +/* OBSOLETE } */ +/* OBSOLETE while (frame->next_frame != thisframe); */ +/* OBSOLETE #endif */ +/* OBSOLETE */ +/* OBSOLETE pointer = framechain (thisframe); */ +/* OBSOLETE */ +/* OBSOLETE /* stop gap for now, end at __base3 *x/ */ +/* OBSOLETE if (thisframe->pc == 0) */ +/* OBSOLETE return 0; */ +/* OBSOLETE */ +/* OBSOLETE return pointer; */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE /* */ +/* OBSOLETE * Gdb front-end and internal framechain routine. */ +/* OBSOLETE * Go back up stack one level. Tricky... */ +/* OBSOLETE *x/ */ +/* OBSOLETE CORE_ADDR */ +/* OBSOLETE framechain(frame) */ +/* OBSOLETE register struct frame_info *frame; */ +/* OBSOLETE { */ +/* OBSOLETE register CORE_ADDR func, prevsp; */ +/* OBSOLETE register unsigned value; */ +/* OBSOLETE */ +/* OBSOLETE /* Get real function start address from internal frame address *x/ */ +/* OBSOLETE func = get_pc_function_start(frame->pc); */ +/* OBSOLETE */ +/* OBSOLETE /* If no stack given, read register Br1 "(sp)" *x/ */ +/* OBSOLETE if (!frame->frame) */ +/* OBSOLETE prevsp = read_register (SP_REGNUM); */ +/* OBSOLETE else */ +/* OBSOLETE prevsp = frame->frame; */ +/* OBSOLETE */ +/* OBSOLETE /* Check function header, case #2 *x/ */ +/* OBSOLETE value = read_memory_integer (func, 4); */ +/* OBSOLETE if (value) */ +/* OBSOLETE { */ +/* OBSOLETE /* 32bit call push value stored in function header *x/ */ +/* OBSOLETE prevsp += value; */ +/* OBSOLETE } */ +/* OBSOLETE else */ +/* OBSOLETE { */ +/* OBSOLETE /* read half-word from suabr at start of function *x/ */ +/* OBSOLETE prevsp += read_memory_integer (func + 10, 2); */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE return (prevsp); */ +/* OBSOLETE } */ |