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!
*/
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+
#include "defs.h"
#include "tm-i860.h"
#include "tm-i860.h"
#include "i860-opcode.h"
-#include <stdio.h>
#include "break.h"
+#include "command.h"
#ifdef notdef
-
#include <sys/types.h>
#include <sys/param.h>
#include <sys/dir.h>
-
#endif
#include <signal.h>
#include <a.out.h>
#include <sys/file.h>
-#include <sys/stat.h>
#include <core.h>
#include <sys/user.h>
-
#include <elf.h>
#include <sys/elftypes.h>
#include <sys/elf_860.h>
#include <libelf.h>
+extern int read_memory();
+extern int write_memory();
+extern int read_memory_integer();
+extern int print_insn();
+extern void bzero();
+extern void bcopy();
+extern int store_inferior_registers(int);
+extern int outside_startup_file();
+
int btdebug = 0; /* change value to 1 to enable debugging code */
#define BTDEBUG if (btdebug) btdebug_message
-#include <stdarg.h>
+extern int errno;
+extern int attach_flag;
-int read_memory();
-int write_memory();
+#define INSTRUCTION_LENGTH 4
+#define REGISTER_LENGTH 4
-btdebug_message(char *format, ...)
+/* routine to print debugging messages */
+void btdebug_message(char *format, ...)
{
va_list arglist;
va_start( arglist, format );
va_end ( arglist );
}
-extern int errno;
-extern int attach_flag;
-
-
-/* This is used when GDB is exiting. It gives less chance of error.*/
-
-
-/* Simulate single-step ptrace call for sun4. Code written by Gary
- Beihl (beihl@mcc.com). */
-/* Modified for i860 by Jim Hanko (hanko@orc.olivetti.com) */
-
-
-static struct breakpoint brk;
-typedef char binsn_quantum[sizeof break_insn];
-static binsn_quantum break_mem[2];
-
-/* Non-zero if we just simulated a single-step ptrace call. This is
- needed because we cannot remove the breakpoints in the inferior
- process until after the `wait' in `wait_for_inferior'. Used for
- i860. */
-
-int one_stepped;
-void
- single_step (signal)
-int signal;
-{
- CORE_ADDR pc;
- branch_type place_brk();
-
- pc = read_register (PC_REGNUM);
-
- if (!one_stepped)
- {
- brk.address = pc;
- place_brk (pc, SINGLE_STEP_MODE, &brk);
- brk.shadow_contents[0] = brk.shadow_contents[1] = 0;
- brk.shadow_contents[2] = brk.shadow_contents[3] = 0;
-
- if (brk.mode == DIM)
- {
- if ( brk.address1 )
- {
- printf(" DIM1 ->");
- printf(" %x : ", brk.act_addr[3]);
- print_insn( brk.act_addr[3], stdout);
- printf("\t -|- ");
- printf(" %x : ", brk.act_addr[2]);
- print_insn( brk.act_addr[2], stdout);
- printf("\n");
- fflush(stdout);
-
- adj_read_memory (brk.act_addr[2], &brk.shadow_contents[2], 4);
- adj_write_memory (brk.act_addr[2], break_insn, 4);
- adj_read_memory (brk.act_addr[3], &brk.shadow_contents[3], 4);
- /* adj_write_memory (brk.act_addr[3], float_insn, 4); */
-
- }
- if ( brk.address1)
- printf(" DIM2 ->");
- else
- printf(" DIM1 ->");
-
- printf(" %x : ", brk.act_addr[1]);
- print_insn( brk.act_addr[1], stdout);
- printf("\t -|- ");
- printf(" %x : ", brk.act_addr[0]);
- print_insn( brk.act_addr[0], stdout);
- printf("\n");
- fflush(stdout);
-
- adj_read_memory (brk.act_addr[0], &brk.shadow_contents[0], 4);
- adj_write_memory (brk.act_addr[0], break_insn, 4);
- adj_read_memory (brk.act_addr[1], &brk.shadow_contents[1], 4);
- /* adj_write_memory (brk.act_addr[1], float_insn, 4); */
-
- }
- else {
- if (brk.address1)
- {
- if (btdebug)
- {
- printf(" SIM1 ->");
- printf(" %x : ", brk.act_addr[2]);
- print_insn( brk.act_addr[2], stdout);
- printf("\n");
- fflush(stdout);
- }
- adj_read_memory (brk.act_addr[2], &brk.shadow_contents[2], 4);
- adj_write_memory (brk.act_addr[2], break_insn, 4);
- }
- if (btdebug)
- {
- if ( brk.address1)
- printf(" SIM2 ->");
- else
- printf(" SIM1 ->");
-
- printf(" %x : ", brk.act_addr[0]);
- print_insn( brk.act_addr[0], stdout);
- printf("\n");
- fflush(stdout);
- }
- adj_read_memory (brk.act_addr[0], &brk.shadow_contents[0], 4);
- adj_write_memory (brk.act_addr[0], break_insn, 4);
- }
-
- /* Let it go */
- one_stepped = 1;
- return;
- }
- else
- {
- /* Remove breakpoints */
- if (brk.mode == DIM)
- {
- adj_write_memory (brk.act_addr[0], &brk.shadow_contents[0], 4);
- adj_write_memory (brk.act_addr[1], &brk.shadow_contents[1], 4);
- } else {
- adj_write_memory (brk.act_addr[0], &brk.shadow_contents[0], 4);
- }
-
- if (brk.address1)
- {
- if (brk.mode == DIM)
- {
- adj_write_memory (brk.act_addr[2], &brk.shadow_contents[2], 4);
- adj_write_memory (brk.act_addr[3], &brk.shadow_contents[3], 4);
- } else {
- adj_write_memory (brk.act_addr[2], &brk.shadow_contents[2], 4);
- }
- }
- one_stepped = 0;
- }
-}
-
-
\f
/* return nonzero if the routine containing pc has been
* based on skip_prologue();
*/
-g_routine(pc)
+static int g_routine(pc)
CORE_ADDR pc;
{
- long instr;
- int regno;
+ CORE_ADDR instr;
CORE_ADDR top_pc;
top_pc = get_pc_function_start(pc);
- if (top_pc)
+ if (top_pc != NULL)
{
- instr = adj_read_memory_integer (top_pc);
+ instr = (unsigned)( adj_read_memory_integer (top_pc));
/* Recognize "addu|adds -X,sp,sp" insn. */
if ((instr & 0xEFFF0000) == 0x84420000)
{
- top_pc += 4;
- instr = adj_read_memory_integer (top_pc);
+ top_pc += INSTRUCTION_LENGTH;
+ instr = (unsigned)(adj_read_memory_integer (top_pc));
if( (instr & 0xFFE0F801) == 0x1C401801 ) /* st.l fp,X(sp) */
return(1);
}
-/* Written for i860 by Jim Hanko (hanko@orc.olivetti.com) */
-/* This code was based on SPARC code written by Gary Beihl (beihl@mcc.com),
- by Michael Tiemann (tiemann@corto.inria.fr). */
-
-struct command_line *get_breakpoint_commands ();
-
-CORE_ADDR
- skip_prologue (pc)
+/* return the stack offset where the fp register is stored */
+static int find_fp_offset(pc)
CORE_ADDR pc;
{
- long instr;
- int regno;
-
- instr = adj_read_memory_integer (pc);
-
- /* Recognize "addu|adds -X,sp,sp" insn. */
- if ((instr & 0xEFFF0000) == 0x84420000)
- {
- pc += 4;
- instr = adj_read_memory_integer (pc);
- }
- else
- return(pc); /* No frame! */
+ int fp_off,i;
+ CORE_ADDR instr;
- /* Recognize store of return addr and frame pointer into frame */
- while (1)
- {
- if ((instr & 0xFFE0F801) == 0x1C400801 || /* st.l r1,X(sp) */
- (instr & 0xFFE0F801) == 0x1C401801) /* st.l fp,X(sp) */
- {
- pc += 4;
- instr = adj_read_memory_integer (pc);
- }
- else
- break;
- }
+ /* look for the instruction and examine the offset */
- /* Recognize "addu|adds X,sp,fp" insn. */
- if ((instr & 0xEFFF0000) == 0x84430000)
- {
- pc += 4;
- instr = adj_read_memory_integer (pc);
+ for (i=INSTRUCTION_LENGTH*1; i< INSTRUCTION_LENGTH*4; i+=INSTRUCTION_LENGTH){
+ instr = (unsigned)(adj_read_memory_integer(pc+i));
+ if( (instr & 0xFFE0F801) == 0x1C401801) { /* st.l fp,X(sp) */
+
+ fp_off = SIGN_EXT16(((instr&0x001F0000) >> 5) |
+ (instr&0x000007FE));
+ return(fp_off);
}
+ }
+ return(0);
+}
+
+/* return the stack offset where r1 (return linkage ) register is stored */
+static int find_r1_offset(pc)
+CORE_ADDR pc;
+{
+ int r1_off,i;
+ CORE_ADDR instr;
- /* Now recognize stores into the frame from the registers. */
+ /* look for the instruction and examine the offset */
- while (1)
- {
- if ((instr & 0xFFA00003) == 0x1C200001 || /* st.l rn,X(fp|sp) */
- (instr & 0xFFA00001) == 0x4C200000) /* fst.y fn,X(fp|sp) */
- {
- regno = (instr >> 11) & 0x1f;
- if (regno == 0) /* source reg == 0? quit */
- break;
- pc += 4;
- instr = adj_read_memory_integer (pc);
- }
- else
- break;
+ for (i=INSTRUCTION_LENGTH*1; i< INSTRUCTION_LENGTH*4; i+=INSTRUCTION_LENGTH){
+ instr = (unsigned)( adj_read_memory_integer(pc+i));
+ if ((instr & 0xFFE0F801) == 0x1C400801) { /* st.l r1,X(sp) */
+
+ r1_off = SIGN_EXT16(((instr&0x001F0000) >> 5) |
+ (instr&0x000007FE));
+ return(r1_off);
}
-
- return(pc);
+ }
+ return(-1);
}
+CORE_ADDR skip_prologue(CORE_ADDR);
-/* Set *nextpc to branch target if we find a branch. If it is not a branch,
- set it to the next instruction (addr + 4) */
+/* does routine starting at pc build a stack frame of any kind?? */
+static int has_a_frame(pc)
+CORE_ADDR pc;
+{
+ if( skip_prologue(pc) != pc )return(1);
+ else return(0);
+}
-branch_type
- isabranch (addr, nextpc)
-CORE_ADDR addr, *nextpc;
+/* written by Peggy Fieland Margaret_Fieland@vos.stratus.com
+ Routine to validate the return register and the frame pointer
+ This routine is called when the routine we are in doesn't have a frame
+ In that case, we assume that the return address and frame pointer have
+ not been touched. In the following routine, we try to range check them
+ to see if they are valid. */
+
+static int valid_regs (rp, fp)
+CORE_ADDR rp, fp;
{
- long instr;
- branch_type val = not_branch;
- long offset; /* Must be signed for sign-extend */
-
- printf(" isabranch\n");
- *nextpc = addr;
- instr = adj_read_memory_integer (addr);
-
- if ((instr & 0xE0000000) == 0x60000000 && /* CTRL format */
- (instr & 0xF8000000) != 0x60000000) /* not pfld.y */
- {
- if ((instr & 0xF8000000) == 0x68000000) /* br or call */
- val = uncond_d;
- else if ((instr & 0xF4000000) == 0x74000000) /* bc.t or bnc.t */
- val = cond_d;
- else if ((instr & 0xF4000000) == 0x70000000) /* bc or bnc */
- val = cond;
-
- offset = (instr & 0x03ffffff);
- if (offset & 0x02000000) /* sign extend? */
- offset |= 0xFC000000;
- *nextpc = addr + 4 + (offset << 2);
- }
- else if ((instr & 0xFC00003F) == 0x4C000002 || /* calli */
- (instr & 0xFC000000) == 0x40000000) /* bri */
- {
- val = uncond_d;
- offset = ((instr & 0x0000F800) >> 11);
- *nextpc = (read_register(offset) & 0xFFFFFFFC);
- }
- else if ((instr & 0xF0000000) == 0x50000000) /* bte or btne */
- {
- val = cond;
-
- offset = SIGN_EXT16(((instr & 0x001F0000) >> 5) | (instr & 0x000007FF));
- *nextpc = addr + 4 + (offset << 2);
- }
- else if ((instr & 0xFC000000) == 0xB4000000) /* bla */
- {
- val = cond_d;
-
- offset = SIGN_EXT16(((instr & 0x001F0000) >> 5) | (instr & 0x000007FF));
- *nextpc = addr + 4 + (offset << 2);
- }
-
- printf(" Final addr - %x\n", *nextpc);
- /*printf("isabranch ret: %d\n",val); */
- return val;
+ if ( ( (rp % 4) != 0) | ( (fp % 16) != 0) )
+ return (0);
+ else
+ return (1);
}
-/* set in call_function() [valops.c] to the address of the "call dummy" code
- so dummy frames can be easily recognized; also used in wait_for_inferior()
- [infrun.c]. When not used, it points into the ABI's 'reserved area' */
-CORE_ADDR call_dummy_set = 0; /* true if dummy call being done */
-CORE_ADDR call_dummy_start; /* address of call dummy code */
+
+/* get the pc and frame pointer (or sp )
+ * for the routine that called us
+ * when we (this_pc) is not within a -g routine
+ * if caller is non g we return sp for fp
+ */
-frame_find_saved_regs(frame_info, frame_saved_regs)
- struct frame_info *frame_info;
- struct frame_saved_regs *frame_saved_regs;
+/* note this is written for Metaware version R2.1d compiler */
+/* Modified by Peggy Fieland Margaret_Fieland@vos.stratus.com */
+static int caller_pc(this_pc,this_sp,to_pc,to_fp)
+ CORE_ADDR this_pc,this_sp;
+ CORE_ADDR *to_pc, *to_fp;
{
- register CORE_ADDR pc;
- long instr, spdelta = 0, offset;
- int i, size, reg;
- int r1_off = -1, fp_off = -1;
- int framesize;
+ CORE_ADDR func_start;
+ int sp_offset,offset;
+ CORE_ADDR sp,pc,fp,instr;
- bzero (frame_saved_regs, sizeof(*frame_saved_regs));
+ BTDEBUG("caller_pc %x sp = %x\n",this_pc,this_sp);
- if (call_dummy_set && frame_info->pc >= call_dummy_start &&
- frame_info->pc <= call_dummy_start + CALL_DUMMY_LENGTH)
- {
- /* DUMMY frame - all registers stored in order at fp; old sp is
- at fp + NUM_REGS*4 */
-
- for (i = 1; i < NUM_REGS; i++) /* skip reg 0 */
- if (i != SP_REGNUM && i != FP0_REGNUM && i != FP0_REGNUM + 1)
- frame_saved_regs->regs[i] = frame_info->frame + i*4;
-
- frame_saved_regs->regs[SP_REGNUM] = frame_info->frame + NUM_REGS*4;
-
- call_dummy_set = 0;
- return;
- }
-
- pc = get_pc_function_start (frame_info->pc);
- if (pc)
- {
- instr = adj_read_memory_integer (pc);
- /* Recognize "addu|adds -X,sp,sp" insn. */
- if ((instr & 0xEFFF0000) == 0x84420000)
- {
- framesize = -SIGN_EXT16(instr & 0x0000FFFF);
- pc += 4;
- instr = adj_read_memory_integer (pc);
- }
- }
- else
- goto punt; /* No frame! */
-
- /* Recognize store of return addr and frame pointer into frame */
- while (1)
- {
- if ((instr & 0xFFE0F801) == 0x1C400801) /* st.l r1,X(sp) */
- {
- r1_off = SIGN_EXT16(((instr&0x001F0000) >> 5) | (instr&0x000007FE));
- pc += 4;
- instr = adj_read_memory_integer (pc);
- }
- else if ((instr & 0xFFE0F801) == 0x1C401801) /* st.l fp,X(sp) */
- {
- fp_off = SIGN_EXT16(((instr&0x001F0000) >> 5) | (instr&0x000007FE));
- pc += 4;
- instr = adj_read_memory_integer (pc);
- }
- else
- break;
- }
-
- /* Recognize "addu|adds X,sp,fp" insn. */
- if ((instr & 0xEFFF0000) == 0x84430000)
- {
- spdelta = SIGN_EXT16(instr & 0x0000FFFF);
- pc += 4;
- instr = adj_read_memory_integer (pc);
- }
-
- /* Now recognize stores into the frame from the registers. */
-
- while (1)
- {
- if ((instr & 0xFFC00003) == 0x1C400001) /* st.l rn,X(fp|sp) */
- {
- offset = SIGN_EXT16(((instr&0x001F0000) >> 5) | (instr&0x000007FE));
- reg = (instr >> 11) & 0x1F;
- if (reg == 0)
- break;
- if ((instr & 0x00200000) == 0) /* was this using sp? */
- if (spdelta) /* and we know sp-fp delta */
- offset -= spdelta; /* if so, adjust the offset */
- else
- break; /* if not, give up */
-
-
- /* Handle the case where the return address is stored after the fp
- is adjusted */
-
- if (reg == 1)
- frame_saved_regs->regs[PC_REGNUM] = frame_info->frame + offset;
- else
- frame_saved_regs->regs[reg] = frame_info->frame + offset;
-
- pc += 4;
- instr = adj_read_memory_integer (pc);
- }
- else if ((instr & 0xFFC00001) == 0x2C400000) /* fst.y fn,X(fp|sp) */
- {
- /*
- * The number of words in a floating store based on 3 LSB of instr
- */
- static int fst_sizes[] = {2, 0, 1, 0, 4, 0, 1, 0};
-
- size = fst_sizes[instr & 7];
- reg = ((instr >> 16) & 0x1F) + FP0_REGNUM;
- if (reg == 0)
- break;
-
- if (size > 1) /* align the offset */
- offset = SIGN_EXT16(instr & 0x0000FFF8); /* drop 3 bits */
- else
- offset = SIGN_EXT16(instr & 0x0000FFFC); /* drop 2 bits */
-
- if ((instr & 0x00200000) == 0) /* was this using sp? */
- if (spdelta) /* and we know sp-fp delta */
- offset -= spdelta; /* if so, adjust the offset */
- else
- break; /* if not, give up */
-
- for (i = 0; i < size; i++)
- {
- frame_saved_regs->regs[reg] = frame_info->frame + offset;
-
- offset += 4;
- reg++;
- }
-
- pc += 4;
- instr = adj_read_memory_integer (pc);
- }
- else
- break;
- }
-
- punt: ;
- if (framesize != 0 && spdelta != 0)
- frame_saved_regs->regs[SP_REGNUM] = frame_info->frame+(framesize-spdelta);
- else
- frame_saved_regs->regs[SP_REGNUM] = frame_info->frame + 8;
-
- if (spdelta && fp_off != -1)
- frame_saved_regs->regs[FP_REGNUM] = frame_info->frame - spdelta + fp_off;
- else
- frame_saved_regs->regs[FP_REGNUM] = frame_info->frame;
-
- if (spdelta && r1_off != -1)
- frame_saved_regs->regs[PC_REGNUM] = frame_info->frame - spdelta + r1_off;
- else
- frame_saved_regs->regs[PC_REGNUM] = frame_info->frame + 4;
-}
-
-/* return the stack offset where the fp register is stored */
-find_fp_offset(pc)
-{
- int fp_off,i;
- long instr;
-
- /* look for the instruction and examine the offset */
-
- for(i=4; i<16; i+=4){
- instr = adj_read_memory_integer(pc+i);
- if( (instr & 0xFFE0F801) == 0x1C401801) { /* st.l fp,X(sp) */
-
- fp_off = SIGN_EXT16(((instr&0x001F0000) >> 5) |
- (instr&0x000007FE));
- return(fp_off);
- }
- }
- return(0);
-}
-
-/* return the stack offset where r1 (return linkage ) register is stored */
-
-find_r1_offset(pc)
-{
- int r1_off,i;
- long instr;
-
- /* look for the instruction and examine the offset */
-
- for(i=4; i<16; i+=4){
-
- instr = adj_read_memory_integer(pc+i);
- if ((instr & 0xFFE0F801) == 0x1C400801) { /* st.l r1,X(sp) */
-
- r1_off = SIGN_EXT16(((instr&0x001F0000) >> 5) |
- (instr&0x000007FE));
- return(r1_off);
- }
- }
- return(-1);
-}
-
-
-/* dose routine starting at pc build a stack frame of any kind?? */
-has_a_frame(pc)
-{
- if( skip_prologue(pc) != pc )return(1);
- else return(0);
-}
-
-/* get the frame pointer of the caller.
- * note that only routines that have been compiled with
- * -g have full (XX)fp style stack frames
- * if we are not returning to a non -g caller then we
- * return the sp at entry to us as it is the caller's
- * frame reference.
- */
-
-frame_chain(thisframe)
- FRAME thisframe;
-{
- unsigned long fp, sp, pc;
- unsigned long func_start;
- long instr;
- int offset;
- unsigned long thisfp = thisframe->frame;
-
- /* get the frame pointer actually sp for a non -g
- * for the routine that called us routine
- */
-
- BTDEBUG("FRAME_CHAIN(%x)\n",thisframe);
-
- if ( !read_memory_integer (thisframe->frame,4))
- {
- return (0);
- }
-
- if( ! g_routine(thisframe->pc) ){
- BTDEBUG( "non g at %x\n",thisframe->pc);
- caller_pc(thisframe->pc,thisframe->sp,&pc,&fp);
- BTDEBUG("caller_pc returned %x %x \n",pc,fp);
- return(fp);
-
- }/* else a -g routine */
-
-
- fp = read_memory_integer (thisfp, 4);
-
- if (fp < thisfp || fp > STACK_END_ADDR)
- {
- /* handle the Metaware-type pseudo-frame */
-
- func_start = get_pc_function_start(thisframe->pc);
-
- if (func_start)
- {
-
- instr = adj_read_memory_integer (func_start);
- /* Recognize "addu|adds -X,sp,sp" insn. */
- if ((instr & 0xEFFF0000) == 0x84420000)
- offset = SIGN_EXT16(instr & 0x0000FFFF);
-
- }
-
- fp = 0;
- if (offset < 0)
- fp = thisfp - offset;
- }
- BTDEBUG("frame_chain returned %d\n",fp);
- return(fp);
-}
-
-/* get the pc and frame pointer (or sp )
- * for the routine that called us
- * when we (this_pc) is not within a -g routine
- * if caller is non g we return sp for fp
- */
-
-/* note this is written for Metaware version R2.1d compiler */
-
-caller_pc(this_pc,this_sp,to_pc,to_fp)
- int * to_pc, *to_fp;
- unsigned long this_pc,this_sp;
-{
- unsigned long func_start;
- int sp_offset,offset;
- unsigned long sp,pc,fp,instr;
-
- BTDEBUG("caller_pc %x sp = %x\n",this_pc,this_sp);
-
- func_start = get_pc_function_start(this_pc);
-
- BTDEBUG("caller_pc func_start %x\n", func_start);
-
- if (func_start)
+ func_start = get_pc_function_start(this_pc);
+
+ BTDEBUG("caller_pc func_start %x\n", func_start);
+
+ if (func_start!= NULL)
{
if( has_a_frame(func_start) ){
* declares space for a stack frame
* then we must work to find our return address
*/
- instr = adj_read_memory_integer (func_start);
+ instr = (unsigned)( adj_read_memory_integer (func_start));
/* Recognize "addu|adds -X,sp,sp" insn. */
if ((instr & 0xEFFF0000) == 0x84420000)
sp_offset=SIGN_EXT16(instr&0x0000FFFF);
}
- else { printf("error frame_chain\n");return(0); }
+ else
+ {
+ /* if we get here, procedure doesn't have a frame. If we didn't
+ do anything weird, the frame pointer and return register have
+ the values we want. Check them to see if they are valid. */
+
+ CORE_ADDR temp_rp, temp_fp;
+
+ temp_rp = read_register(RP_REGNUM);
+ temp_fp = read_register(FP_REGNUM);
+
+ if (!valid_regs(temp_rp, temp_fp))
+ {
+ printf("error frame_chain\n");
+ return(0);
+ }
+ BTDEBUG("caller_pc no frame, using r1 %x and fp %x\n",
+ temp_rp, temp_fp);
+ *to_pc = temp_rp;
+ *to_fp = temp_fp;
+ return (1);
+ }
BTDEBUG("sp_offset = %d %x\n",sp_offset,sp_offset);
func_start);
return(0);
}
- pc = read_memory_integer(this_sp+offset,4);
+ pc = read_memory_integer(this_sp+offset,sizeof(long));
sp= this_sp - sp_offset;
BTDEBUG("callers pc = %x sp = %x\n",pc,sp);
}
BTDEBUG("offset = %x %d\n",offset,offset);
- fp = read_memory_integer(this_sp+offset,4);
+ fp = read_memory_integer(this_sp+offset,sizeof(long));
*to_pc = CLEAN_PC(pc);
*to_fp = fp;
return(1);
return(1);
} else {
/* pc = read_register(RP_REGNUM); */
- pc = 0;
- BTDEBUG("read_register pc %x\n",pc);
- if( g_routine(pc) ){
-
- *to_pc = CLEAN_PC(pc);
- *to_fp = read_register(FP_REGNUM);
- return(1);
- }else {
- *to_pc = CLEAN_PC(pc);
- *to_fp = this_sp;
- return(1);
- }
+/* pc = 0; */
+ /* if we get here, procedure doesn't have a frame. If we didn't
+ do anything weird, the frame pointer and return register have
+ the values we want. Check them to see if they are valid. */
+
+ CORE_ADDR temp_rp, temp_fp;
+
+ temp_rp = read_register(RP_REGNUM);
+ temp_fp = read_register(FP_REGNUM);
+
+ if (!valid_regs(temp_rp, temp_fp))
+ {
+ printf("error frame_chain\n");
+ return(0);
+ }
+ BTDEBUG("caller_pc no frame, using r1 %x and fp %x\n",
+ temp_rp, temp_fp);
+ *to_pc = temp_rp;
+ *to_fp = temp_fp;
+ return (1);
}
}
-int outside_startup_file();
+/*
+ ** Figure out address to place next breakpoint. Avoid tricky spots,
+ ** ie. delayed instruction slots etc.
+ ** Need to upgrade this later to allow delayed instruction breakpoints
+ ** with fix-up work done AFTER breakpoint.
+ ** Note that this routine DOES deal with dual instruction mode
+ */
+#define BIM 0x8008
-/* get the PC of the caller */
-frame_saved_pc(frame_struct)
-FRAME frame_struct;
+static branch_type
+ place_brk (addr, mode, brk)
+CORE_ADDR addr;
+int mode;
+struct breakpoint *brk;
{
- unsigned long frame;
- unsigned long pc;
- unsigned long pc1;
- unsigned long sp;
-
- CORE_ADDR fp;
-
- CORE_ADDR rp;
-
- frame = frame_struct->frame;
- pc = frame_struct->pc;
- BTDEBUG("frame_saved_pc input: frame %x, pc %x, sp %x ",
- frame, pc, sp);
-
- /* First see if this is the current frame. If it is, return the value in r1,
- as it may not have been stored */
-
- fp = read_register(FP_REGNUM);
-
- /* check to see if we are in an entry sequence, where the return pointer has not yet been stored */
- if (fp == frame && no_stored_rp(pc))
- {
- pc = read_register(RP_REGNUM);
- frame_struct->rp = pc;
- }
- else if( ! g_routine(pc) )
- {
- caller_pc(pc,sp,&pc,&frame);
- }
- else
- {
-
- pc = read_memory_integer (frame + 4, 4);
-
- if (!outside_startup_file(pc))
- {
-
- BTDEBUG("pc %x outside startup file \n",pc);
-
- pc1 = read_memory_integer (frame, 4);
-
- if (outside_startup_file(pc1))
- pc = pc1;
- else
- pc = 0;
- }
- }
- BTDEBUG(" returning pc %x\n", CLEAN_PC(pc));
- return(CLEAN_PC(pc));
-
- }
-
-/* Pass arguments to a function in the inferior process - ABI compliant
- */
-
-pass_function_arguments(args, nargs, struct_return)
- value *args;
- int nargs;
- int struct_return;
-{
- int ireg = (struct_return) ? 17 : 16;
- int freg = FP0_REGNUM + 8;
- int i;
- struct type *type;
- value arg;
- long tmp;
- value value_arg_coerce();
-
-
- for (i = 0; i < nargs; i++)
- {
- arg = value_arg_coerce(args[i]);
- type = VALUE_TYPE(arg);
- if (type == builtin_type_double)
- {
- write_register_bytes(REGISTER_BYTE(freg), VALUE_CONTENTS(arg), 8);
- freg += 2;
- }
- else
- {
- bcopy(VALUE_CONTENTS(arg), &tmp, 4);
- write_register(ireg, tmp);
- ireg++;
- }
- }
- if (ireg >= 28 || freg >= FP0_REGNUM + 16)
- error("Too many arguments to function");
-}
-
-
-#define SPACES " "
-#define P_SPACES " "
-#define BYTE 0xff
-
-int screen_lines=24;
-
-char *spec_reg[] = {
- "fsr", "db", "dirbase", "fir", "psr", "epsr",
-};
-
-char *doro_reg[] = {
- "scp", "cbsp", "pt_cs", "intmsk", "intack",
-};
-#define NREGS 32
-
-
-get_reg(regno)
-{
- char raw_buffer[32];
- int addr;
- int virtual_buffer;
-
- read_relative_register_raw_bytes (regno, raw_buffer);
- REGISTER_CONVERT_TO_VIRTUAL (addr, raw_buffer, &virtual_buffer);
- return(virtual_buffer);
-}
-
-int jhdebug = 0;
-/*
- ** Figure out address to place next breakpoint. Avoid tricky spots,
- ** ie. delayed instruction slots etc.
- ** Need to upgrade this later to allow delayed instruction breakpoints
- ** with fix-up work done AFTER breakpoint.
- ** Note that this routine DOES deal with dual instruction mode
- */
-#define BIM 0x8008
-
-branch_type
- place_brk (addr, mode, brk)
-CORE_ADDR addr;
-int mode;
-struct breakpoint *brk;
-{
- long nextadr, prevadr, instr;
+ CORE_ADDR instr;
+ CORE_ADDR nextadr, prevadr;
int val = not_branch;
long offset; /* Must be signed for sign-extend */
extern char registers[];
{
if (INDIM || ENDIM)
{
- nextadr = brk->address = (addr + 8);
- instr = adj_read_memory_integer ((addr + 4));
+ nextadr = brk->address = (addr + INSTRUCTION_LENGTH*2);
+ instr = (unsigned)(adj_read_memory_integer ((addr + INSTRUCTION_LENGTH)));
brk->mode = DIM;
}
else
{
- nextadr = brk->address = (addr + 4);
- instr = adj_read_memory_integer (addr);
+ nextadr = brk->address = (addr + INSTRUCTION_LENGTH);
+ instr = (unsigned)(adj_read_memory_integer (addr));
if (STDIM)
brk->mode = DIM;
else
else if (val == cond_d) /* bc.t/bnc.t */
{
if ((INDIM) && !(ENDIM))
- prevadr = nextadr + 8;
+ prevadr = nextadr + (2*INSTRUCTION_LENGTH);
else
- prevadr = nextadr + 4;
+ prevadr = nextadr + INSTRUCTION_LENGTH;
} else { /* bc /bnc */
if ((INDIM) && !(ENDIM))
prevadr = nextadr;
(instr & 0x000007FF));
if ((INDIM) && !(ENDIM))
{
- prevadr = nextadr + 8;
+ prevadr = nextadr + 2*INSTRUCTION_LENGTH;
} else {
- prevadr = nextadr + 4;
+ prevadr = nextadr + INSTRUCTION_LENGTH;
}
nextadr += (offset << 2);
if (prevadr == nextadr) prevadr = 0;
if (ISDIM(FOPADR(addr)))
{
- if (ISDIM(FOPADR(nextadr-8)))
+ if (ISDIM(FOPADR(nextadr- INSTRUCTION_LENGTH*2)))
{
- instr = adj_read_memory_integer(CORADR(addr-8));
+ instr = (unsigned)(adj_read_memory_integer(CORADR(addr
+ -(INSTRUCTION_LENGTH*2))));
brk->mode = DIM;
} else {
- instr = adj_read_memory_integer(addr-4);
+ instr = (unsigned)(adj_read_memory_integer(addr-INSTRUCTION_LENGTH));
brk->mode = RIM;
}
} else {
- if (ISDIM(addr-4))
+ if (ISDIM(addr-INSTRUCTION_LENGTH))
{
- instr = adj_read_memory_integer(addr-4);
+ instr = (unsigned)(adj_read_memory_integer(addr-INSTRUCTION_LENGTH));
brk->mode = BIM;
} else {
- instr = adj_read_memory_integer (addr-4);
+ instr = (unsigned)(adj_read_memory_integer (addr-INSTRUCTION_LENGTH));
brk->mode = SIM;
}
}
if ((instr & 0xE0000000) == 0x60000000 &&
(instr & 0xF8000000) != 0x60000000) /* not pfld.y */
{
- adjust++;
- /* br /call */
- /* bc /bnc */
- /* bc.t /bnc.t*/
- if ((instr & 0xF8000000) == 0x68000000) /* br or call */
- printf(" Breakpoint adjusted to avoid br/call delay slot and multiple breakpoints\n");
+ adjust++;
+ /* br /call */
+ /* bc /bnc */
+ /* bc.t /bnc.t*/
+ if ((instr & 0xF8000000) == 0x68000000) /* br or call */
+ printf(" Breakpoint adjusted to avoid br/call delay slot and multiple breakpoints\n");
+
+ if ((instr & 0xF4000000) == 0x74000000) /* bc.t or bnc.t */
+ printf(" Breakpoint adjusted to avoid bc.t/bnc.t delay slot and multiple breakpoints\n");
+ /* it IS really OK to set a break on the instruction AFTER the conditional branch
+ -- it DOESN't have a delay slot */
+ if ((instr & 0xF4000000) == 0x70000000) /* bc / bnc */
+ /* printf(" Breakpoint adjusted to avoid bc/bnc delay slot and multiple breakpoints\n"); */
+ adjust = 0;
+ } else if
+ ((instr & 0xFC00003F) == 0x4C000002 || /* bri/ calli */
+ (instr & 0xFC000000) == 0x40000000)
+ {
+ adjust++;
+ printf(" Breakpoint adjusted to avoid calli/bri delay slot and multiple breakpoints\n");
+ } else if
+ ((instr & 0xF0000000) == 0x50000000) /* bte - btne */
+ {
+ /* it's OK to set a break here -- we are NOT in aa branch delay slot */
+ /*
+ adjust++;
+ printf(" Breakpoint adjusted to avoid bte/btne multiple breakpoints\n");
+ */
+ adjust = 0;
+ } else if
+ ((instr & 0xFC000000) == 0xB4000000)
+ {
+ adjust++;
+ printf(" Breakpoint adjusted to avoid bla delay slot and multiple breakpoints\n");
+ }
+ if (adjust != 0)
+ {
+ if (brk->mode == DIM)
+ {
+ nextadr -= INSTRUCTION_LENGTH*2;
+ nextadr = CORADR(nextadr);
+ }
+ else
+ nextadr -= INSTRUCTION_LENGTH;
+ }
+
+ }
+
+ if (brk->mode == RIM)
+ brk->mode = DIM;
+ if (brk->mode == BIM)
+ brk->mode = SIM;
+
+ if (nextadr != NULL)
+ {
+ if (brk->mode == DIM)
+ {
+ brk->act_addr[0] = CORADR(nextadr);
+ brk->act_addr[1] = FOPADR(nextadr);
+ } else {
+ brk->act_addr[0] = nextadr;
+ brk->act_addr[1] = 0;
+ }
+ }
+
+ if (prevadr != NULL)
+ {
+ brk->address1 = prevadr;
+ if (brk->mode == DIM)
+ {
+ brk->act_addr[2] = CORADR(prevadr);
+ brk->act_addr[3] = FOPADR(prevadr);
+ } else {
+ brk->act_addr[2] = prevadr;
+ brk->act_addr[3] = 0;
+ }
+ } else {
+ brk->act_addr[2] = brk->act_addr[3] = 0;
+ }
+ return val;
+}
+
+/* This routine checks to see if r1 has been stored into the frame between
+ the addresses prologue_start and prologue_end. Recognize stores of r1
+ relative to both the sp and fp registers. */
+static int has_stored_r1(CORE_ADDR prologue_start, CORE_ADDR prologue_end)
+{
+ CORE_ADDR instr;
+ CORE_ADDR addr;
+
+ BTDEBUG("has_stored_r1, prologue_start %x, prologue_end %x\n",
+ prologue_start, prologue_end);
+
+ for (addr = prologue_start; addr <= prologue_end; addr += INSTRUCTION_LENGTH)
+ {
+
+ instr = (unsigned)(adj_read_memory_integer (addr));
+ if ((instr & 0xFFE0F801) == 0x1C400801 /* st.l r1,X(sp) */
+ || (instr & 0xFFE0F801) == 0x1C600801) /* st.l r1,X(fp) */
+ return (1);
+ }
+ return 0;
+}
+/* This is used when GDB is exiting. It gives less chance of error.*/
+
+
+/* Simulate single-step ptrace call for sun4. Code written by Gary
+ Beihl (beihl@mcc.com). */
+/* Modified for i860 by Jim Hanko (hanko@orc.olivetti.com) */
+
+
+static struct breakpoint brk;
+typedef char binsn_quantum[sizeof break_insn];
+
+/* Non-zero if we just simulated a single-step ptrace call. This is
+ needed because we cannot remove the breakpoints in the inferior
+ process until after the `wait' in `wait_for_inferior'. Used for
+ i860. */
+
+int one_stepped;
+
+/* single_step() is called just before we want to resume the inferior,
+ if we want to single-step it but there is no hardware or kernel single-step
+ support. We find all the possible targets of the coming instruction and
+ breakpoint them.
+
+ single_step is also called just after the inferior stops. If we had
+ set up a simulated single-step, we undo our damage. */
+/* Note that we don't need the parameter, but it's dictated as part of the interface. */
+void
+ single_step (signal)
+int signal;
+{
+ CORE_ADDR pc;
+ branch_type place_brk();
+
+ pc = read_register (PC_REGNUM);
+
+ if (!one_stepped)
+ {
+ brk.address = pc;
+ place_brk (pc, SINGLE_STEP_MODE, &brk);
+ brk.shadow_contents[0] = brk.shadow_contents[1] = 0;
+ brk.shadow_contents[2] = brk.shadow_contents[3] = 0;
+
+ if (brk.mode == DIM)
+ {
+ if (btdebug != 0)
+ {
+ btdebug_message(" DIM1 -> %x : ", brk.act_addr[3]);
+ print_insn( brk.act_addr[3], stderr);
+ btdebug_message("\t -|- %x : ", brk.act_addr[2]);
+ print_insn( brk.act_addr[2], stderr);
+ btdebug_message("\n");
+ }
+ if (( brk.address1 != NULL))
+ {
+ adj_read_memory (brk.act_addr[2], &brk.shadow_contents[2],
+ INSTRUCTION_LENGTH);
+ adj_write_memory (brk.act_addr[2], break_insn, INSTRUCTION_LENGTH);
+ adj_read_memory (brk.act_addr[3], &brk.shadow_contents[3],
+ INSTRUCTION_LENGTH);
+ /* adj_write_memory (brk.act_addr[3], float_insn,
+ INSTRUCTION_LENGTH); */
+
+ }
+ if (btdebug != 0)
+ {
+ if ( brk.address1 != 0)
+ btdebug_message(" DIM2 ->");
+ else
+ btdebug_message(" DIM1 ->");
+
+ btdebug_message(" %x : ", brk.act_addr[1]);
+ print_insn( brk.act_addr[1], stderr);
+ btdebug_message("\t -|- %x : ", brk.act_addr[0]);
+ print_insn( brk.act_addr[0], stderr);
+ btdebug_message("\n");
+ }
+
+ adj_read_memory (brk.act_addr[0], &brk.shadow_contents[0],
+ INSTRUCTION_LENGTH);
+ adj_write_memory (brk.act_addr[0], break_insn,
+ INSTRUCTION_LENGTH);
+ adj_read_memory (brk.act_addr[1], &brk.shadow_contents[1],
+ INSTRUCTION_LENGTH);
+ /* adj_write_memory (brk.act_addr[1], float_insn,
+ INSTRUCTION_LENGTH); */
+
+ }
+ else {
+ if (brk.address1 != NULL)
+ {
+ if (btdebug)
+ {
+ btdebug_message(" SIM1 ->");
+ btdebug_message(" %x : ", brk.act_addr[2]);
+ print_insn( brk.act_addr[2], stderr);
+ btdebug_message("\n");
+ }
+ adj_read_memory (brk.act_addr[2], &brk.shadow_contents[2],
+ INSTRUCTION_LENGTH);
+ adj_write_memory (brk.act_addr[2], break_insn, INSTRUCTION_LENGTH);
+ }
+ if (btdebug)
+ {
+ if ( brk.address1 != NULL)
+ btdebug_message(" SIM2 ->");
+ else
+ btdebug_message(" SIM1 ->");
+
+ btdebug_message(" %x : ", brk.act_addr[0]);
+ print_insn( brk.act_addr[0], stderr);
+ btdebug_message("\n");
+ }
+ adj_read_memory (brk.act_addr[0], &brk.shadow_contents[0],
+ INSTRUCTION_LENGTH);
+ adj_write_memory (brk.act_addr[0], break_insn,INSTRUCTION_LENGTH);
+ }
+
+ /* Let it go */
+ one_stepped = 1;
+ return;
+ }
+ else
+ {
+ /* Remove breakpoints */
+ if (brk.mode == DIM)
+ {
+ adj_write_memory (brk.act_addr[0], &brk.shadow_contents[0],
+ INSTRUCTION_LENGTH);
+ adj_write_memory (brk.act_addr[1], &brk.shadow_contents[1],
+ INSTRUCTION_LENGTH);
+ } else {
+ adj_write_memory (brk.act_addr[0], &brk.shadow_contents[0],
+ INSTRUCTION_LENGTH);
+ }
+
+ if (brk.address1 != NULL)
+ {
+ if (brk.mode == DIM)
+ {
+ adj_write_memory (brk.act_addr[2], &brk.shadow_contents[2],
+ INSTRUCTION_LENGTH);
+ adj_write_memory (brk.act_addr[3], &brk.shadow_contents[3],
+ INSTRUCTION_LENGTH);
+ } else {
+ adj_write_memory (brk.act_addr[2], &brk.shadow_contents[2],
+ INSTRUCTION_LENGTH);
+ }
+ }
+ one_stepped = 0;
+ }
+}
+
+
+
+/* Written for i860 by Jim Hanko (hanko@orc.olivetti.com) */
+/* This code was based on SPARC code written by Gary Beihl (beihl@mcc.com),
+ by Michael Tiemann (tiemann@corto.inria.fr). */
+/* This routine returns the first memory address following the prologue code,
+ if there is a prologue. */
+
+struct command_line *get_breakpoint_commands ();
+
+CORE_ADDR
+ skip_prologue (pc)
+CORE_ADDR pc;
+{
+ CORE_ADDR instr;
+ int regno;
+
+ instr = (unsigned)(adj_read_memory_integer (pc));
+
+ /* Recognize "addu|adds -X,sp,sp" insn. */
+ if ((instr & 0xEFFF0000) == 0x84420000)
+ {
+ pc += INSTRUCTION_LENGTH;
+ instr = (unsigned)(adj_read_memory_integer (pc));
+ }
+ else
+ return(pc); /* No frame! */
+
+ /* Recognize store of return addr and frame pointer into frame */
+ for (; ;)
+ {
+ if ((instr & 0xFFE0F801) == 0x1C400801 || /* st.l r1,X(sp) */
+ (instr & 0xFFE0F801) == 0x1C401801) /* st.l fp,X(sp) */
+ {
+ pc += INSTRUCTION_LENGTH;
+ instr = (unsigned)(adj_read_memory_integer (pc));
+ }
+ else
+ break;
+ }
+
+ /* Recognize "addu|adds X,sp,fp" insn. */
+ if ((instr & 0xEFFF0000) == 0x84430000)
+ {
+ pc += INSTRUCTION_LENGTH;
+ instr = (unsigned)(adj_read_memory_integer (pc));
+ }
+
+ /* Now recognize stores into the frame from the registers. */
+
+ for (; ;)
+ {
+ if ((instr & 0xFFA00003) == 0x1C200001 || /* st.l rn,X(fp|sp) */
+ (instr & 0xFFA00001) == 0x4C200000) /* fst.y fn,X(fp|sp) */
+ {
+ regno = (instr >> 11) & 0x1f;
+ if (regno == 0) /* source reg == 0? quit */
+ break;
+ pc += INSTRUCTION_LENGTH;
+ instr = (unsigned)(adj_read_memory_integer (pc));
+ }
+ else
+ break;
+ }
+
+ return(pc);
+}
+
+#if 0
+/* This routine is uncalled. Remove it sometime. */
+/* Set *nextpc to branch target if we find a branch. If it is not a branch,
+ set it to the next instruction (addr + 4) */
+
+
+branch_type
+ isabranch (addr, nextpc)
+CORE_ADDR addr, *nextpc;
+{
+ CORE_ADDR instr;
+ branch_type val = not_branch;
+ long offset; /* Must be signed for sign-extend */
+
+ BTDEBUG(" isabranch\n");
+ *nextpc = addr;
+ instr = (unsigned)(adj_read_memory_integer (addr));
+
+ if ((instr & 0xE0000000) == 0x60000000 && /* CTRL format */
+ (instr & 0xF8000000) != 0x60000000) /* not pfld.y */
+ {
+ if ((instr & 0xF8000000) == 0x68000000) /* br or call */
+ val = uncond_d;
+ else if ((instr & 0xF4000000) == 0x74000000) /* bc.t or bnc.t */
+ val = cond_d;
+ else if ((instr & 0xF4000000) == 0x70000000) /* bc or bnc */
+ val = cond;
+
+ offset = (instr & 0x03ffffff);
+ if (offset & 0x02000000) /* sign extend? */
+ offset |= 0xFC000000;
+ *nextpc = addr + 4 + (offset << 2);
+ }
+ else if ((instr & 0xFC00003F) == 0x4C000002 || /* calli */
+ (instr & 0xFC000000) == 0x40000000) /* bri */
+ {
+ val = uncond_d;
+ offset = ((instr & 0x0000F800) >> 11);
+ *nextpc = (read_register(offset) & 0xFFFFFFFC);
+ }
+ else if ((instr & 0xF0000000) == 0x50000000) /* bte or btne */
+ {
+ val = cond;
+
+ offset = SIGN_EXT16(((instr & 0x001F0000) >> 5) | (instr & 0x000007FF));
+ *nextpc = addr + 4 + (offset << 2);
+ }
+ else if ((instr & 0xFC000000) == 0xB4000000) /* bla */
+ {
+ val = cond_d;
+
+ offset = SIGN_EXT16(((instr & 0x001F0000) >> 5) | (instr & 0x000007FF));
+ *nextpc = addr + 4 + (offset << 2);
+ }
+
+ BTDEBUG(" Final addr - %x\n", *nextpc);
+ /*BTDEBUG("isabranch ret: %d\n",val); */
+ return val;
+}
+#endif
+
+/* set in call_function() [valops.c] to the address of the "call dummy" code
+ so dummy frames can be easily recognized; also used in wait_for_inferior()
+ [infrun.c]. When not used, it points into the ABI's 'reserved area' */
+
+CORE_ADDR call_dummy_set = 0; /* true if dummy call being done */
+CORE_ADDR call_dummy_start; /* address of call dummy code */
+
+/* this routine routine gets the values of the registers stored in the frame
+ and stores their values into the frame_saved_regs structure. */
+
+void
+frame_find_saved_regs(frame_info, frame_saved_regs)
+ struct frame_info *frame_info;
+ struct frame_saved_regs *frame_saved_regs;
+{
+ register CORE_ADDR pc;
+ CORE_ADDR instr;
+ long offset, spdelta = 0;
+ int i, size, reg;
+ int r1_off = -1, fp_off = -1;
+ int framesize;
+
+ bzero (frame_saved_regs, sizeof(*frame_saved_regs));
+
+ if (call_dummy_set && frame_info->pc >= call_dummy_start &&
+ frame_info->pc <= call_dummy_start + CALL_DUMMY_LENGTH)
+ {
+ /* DUMMY frame - all registers stored in order at fp; old sp is
+ at fp + NUM_REGS*4 */
+
+ for (i = 1; i < NUM_REGS; i++) /* skip reg 0 */
+ if (i != SP_REGNUM && i != FP0_REGNUM && i != FP0_REGNUM + 1)
+ /* the register numbers used in the instruction and the ones used to index
+ the regs array are not the same -- compensate */
+ frame_saved_regs->regs[i+R0] = frame_info->frame + i*REGISTER_LENGTH;
+
+ frame_saved_regs->regs[SP_REGNUM] = frame_info->frame + NUM_REGS*REGISTER_LENGTH;
+
+ call_dummy_set = 0;
+ return;
+ }
+
+ pc = get_pc_function_start (frame_info->pc);
+ if (pc != NULL)
+ {
+ instr = (unsigned)(adj_read_memory_integer (pc));
+ /* Recognize "addu|adds -X,sp,sp" insn. */
+ if ((instr & 0xEFFF0000) == 0x84420000)
+ {
+ framesize = -SIGN_EXT16(instr & 0x0000FFFF);
+ pc += INSTRUCTION_LENGTH;
+ instr = (unsigned)(adj_read_memory_integer (pc));
+ }
+ }
+ else
+ goto punt; /* No frame! */
+
+ /* Recognize store of return addr and frame pointer into frame */
+ for (; ;)
+ {
+ if ((instr & 0xFFE0F801) == 0x1C400801) /* st.l r1,X(sp) */
+ {
+ r1_off = SIGN_EXT16(((instr&0x001F0000) >> 5) | (instr&0x000007FE));
+ pc += INSTRUCTION_LENGTH;
+ instr = (unsigned)(adj_read_memory_integer (pc));
+ }
+ else if ((instr & 0xFFE0F801) == 0x1C401801) /* st.l fp,X(sp) */
+ {
+ fp_off = SIGN_EXT16(((instr&0x001F0000) >> 5) | (instr&0x000007FE));
+ pc += INSTRUCTION_LENGTH;
+ instr = (unsigned)(adj_read_memory_integer (pc));
+ }
+ else
+ break;
+ }
+
+ /* Recognize "addu|adds X,sp,fp" insn. */
+ if ((instr & 0xEFFF0000) == 0x84430000)
+ {
+ spdelta = SIGN_EXT16(instr & 0x0000FFFF);
+ pc += INSTRUCTION_LENGTH;
+ instr = (unsigned)(adj_read_memory_integer (pc));
+ }
+
+ /* Now recognize stores into the frame from the registers. */
+
+ for (; ;)
+ {
+ if ((instr & 0xFFC00003) == 0x1C400001) /* st.l rn,X(fp|sp) */
+ {
+ offset = SIGN_EXT16(((instr&0x001F0000) >> 5) | (instr&0x000007FE));
+ reg = (instr >> 11) & 0x1F;
+ if (reg == 0)
+ break;
+ if ((instr & 0x00200000) == 0) /* was this using sp? */
+ if (spdelta != 0) /* and we know sp-fp delta */
+ offset -= spdelta; /* if so, adjust the offset */
+ else
+ break; /* if not, give up */
+
+
+ /* Handle the case where the return address is stored after the fp
+ is adjusted */
+
+ if (reg == 1)
+ frame_saved_regs->regs[PC_REGNUM] = frame_info->frame + offset;
+ else
+ frame_saved_regs->regs[reg+R0] = frame_info->frame + offset;
+
+ pc += INSTRUCTION_LENGTH;
+ instr = (unsigned)(adj_read_memory_integer (pc));
+ }
+ else if ((instr & 0xFFC00001) == 0x2C400000) /* fst.y fn,X(fp|sp) */
+ {
+ /*
+ * The number of words in a floating store based on 3 LSB of instr
+ */
+ static int fst_sizes[] = {2, 0, 1, 0, 4, 0, 1, 0};
+
+ size = fst_sizes[instr & 7];
+ reg = ((instr >> 16) & 0x1F) + FP0_REGNUM;
+ if (reg == 0)
+ break;
+
+ if (size > 1) /* align the offset */
+ offset = SIGN_EXT16(instr & 0x0000FFF8); /* drop 3 bits */
+ else
+ offset = SIGN_EXT16(instr & 0x0000FFFC); /* drop 2 bits */
+
+ if ((instr & 0x00200000) == 0) /* was this using sp? */
+ if (spdelta != 0) /* and we know sp-fp delta */
+ offset -= spdelta; /* if so, adjust the offset */
+ else
+ break; /* if not, give up */
+
+ for (i = 0; i < size; i++)
+ {
+ frame_saved_regs->regs[reg] = frame_info->frame + offset;
+
+ offset += REGISTER_LENGTH;
+ reg++;
+ }
+
+ pc += INSTRUCTION_LENGTH;
+ instr = (unsigned)(adj_read_memory_integer (pc));
+ }
+ else
+ break;
+ }
+
+ punt: ;
+ if (framesize != 0 && spdelta != 0)
+ frame_saved_regs->regs[SP_REGNUM] = frame_info->frame+(framesize-spdelta);
+ else
+ frame_saved_regs->regs[SP_REGNUM] = frame_info->frame + 8;
+
+ if ((spdelta != 0) && fp_off != -1)
+ frame_saved_regs->regs[FP_REGNUM] = frame_info->frame - spdelta + fp_off;
+ else
+ frame_saved_regs->regs[FP_REGNUM] = frame_info->frame;
+
+ if ((spdelta != 0) && r1_off != -1)
+ frame_saved_regs->regs[PC_REGNUM] = frame_info->frame - spdelta + r1_off;
+ else
+ frame_saved_regs->regs[PC_REGNUM] = frame_info->frame + 4;
+}
+
+
+/* get the frame pointer of the caller.
+ * note that only routines that have been compiled with
+ * -g have full (XX)fp style stack frames
+ * if we are not returning to a non -g caller then we
+ * return the sp at entry to us as it is the caller's
+ * frame reference.
+ */
+
+frame_chain(thisframe)
+ FRAME thisframe;
+{
+ CORE_ADDR fp, pc;
+ CORE_ADDR func_start;
+ CORE_ADDR instr;
+ int offset;
+ CORE_ADDR thisfp = thisframe->frame;
+
+ /* get the frame pointer actually sp for a non -g
+ * for the routine that called us routine
+ */
+
+ BTDEBUG("FRAME_CHAIN(%x)\n",thisframe);
+
+ if ( !read_memory_integer (thisframe->frame,sizeof(long)) )
+ {
+ return (0);
+ }
+
+ if( ! g_routine(thisframe->pc) ){
+ BTDEBUG( "non g at %x\n",thisframe->pc);
+ caller_pc(thisframe->pc,thisframe->sp,&pc,&fp);
+ BTDEBUG("caller_pc returned %x %x \n",pc,fp);
+ return(fp);
+
+ }/* else a -g routine */
+
+
+ fp = read_memory_integer (thisfp, sizeof(long));
+
+ if (fp < thisfp || fp > (unsigned) STACK_END_ADDR)
+ {
+ /* handle the Metaware-type pseudo-frame */
+
+ func_start = get_pc_function_start(thisframe->pc);
+
+ if (func_start != NULL)
+ {
+
+ instr = (unsigned)(adj_read_memory_integer (func_start));
+ /* Recognize "addu|adds -X,sp,sp" insn. */
+ if ((instr & 0xEFFF0000) == 0x84420000)
+ offset = SIGN_EXT16(instr & 0x0000FFFF);
- if ((instr & 0xF4000000) == 0x74000000) /* bc.t or bnc.t */
- printf(" Breakpoint adjusted to avoid bc.t/bnc.t delay slot and multiple breakpoints\n");
- /* it IS really OK to set a break on the instruction AFTER the conditional branch
- -- it DOESN't have a delay slot */
- if ((instr & 0xF4000000) == 0x70000000) /* bc / bnc */
- /* printf(" Breakpoint adjusted to avoid bc/bnc delay slot and multiple breakpoints\n"); */
- adjust = 0;
- } else if
- ((instr & 0xFC00003F) == 0x4C000002 || /* bri/ calli */
- (instr & 0xFC000000) == 0x40000000)
- {
- adjust++;
- printf(" Breakpoint adjusted to avoid calli/bri delay slot and multiple breakpoints\n");
- } else if
- ((instr & 0xF0000000) == 0x50000000) /* bte - btne */
- {
- /* it's OK to set a break here -- we are NOT in aa branch delay slot */
- /*
- adjust++;
- printf(" Breakpoint adjusted to avoid bte/btne multiple breakpoints\n");
- */
- adjust = 0;
- } else if
- ((instr & 0xFC000000) == 0xB4000000)
- {
- adjust++;
- printf(" Breakpoint adjusted to avoid bla delay slot and multiple breakpoints\n");
- }
- if (adjust)
- {
- if (brk->mode == DIM)
- {
- nextadr -= 8;
- nextadr = CORADR(nextadr);
- }
- else
- nextadr -=4;
}
+ fp = 0;
+ if (offset < 0)
+ fp = thisfp - offset;
}
+ BTDEBUG("frame_chain returned %d\n",fp);
+ return(fp);
+}
+
+/* This function returns 1 if there is no stored r1, 0 otherwise.
+ The function returns 1 if the pc is in a function prologue,
+ or the function prologue didn't save the return pointer in
+ the stack frame, 0 otherwise */
+
+int no_stored_rp(CORE_ADDR pc)
+{
+ CORE_ADDR func_start, prologue_end;
- if (brk->mode == RIM)
- brk->mode = DIM;
- if (brk->mode == BIM)
- brk->mode = SIM;
-
- if (nextadr)
+ func_start = get_pc_function_start(pc);
+ if (func_start != NULL)
{
- if (brk->mode == DIM)
+ prologue_end = func_start;
+ SKIP_PROLOGUE(prologue_end);
+ if ( (pc >= func_start) && (pc <= prologue_end))
{
- brk->act_addr[0] = CORADR(nextadr);
- brk->act_addr[1] = FOPADR(nextadr);
- } else {
- brk->act_addr[0] = nextadr;
- brk->act_addr[1] = 0;
+ BTDEBUG("no_stored_rp: pc %x is in prologue \n",pc);
+ return 1;
+ }
+ /* otherwise, see if the entry sequence stored the return pointer.
+ If it didn't, return 1 */
+ /* Some procedures , at least, store the return pointer AFTER
+ the prologue sequence, so check for stores from function start to
+ present pc value. */
+ if (!has_stored_r1(func_start, pc))
+ {
+ BTDEBUG("no_stored_rp, for pc %x, prologue didn't store r1\n",pc);
+ return 1;
}
}
+ BTDEBUG("no_stored_rp for pc %x return pointer was stored \n", pc);
+
+ return 0;
+}
+
+/* get the PC of the caller */
+CORE_ADDR frame_saved_pc(frame_struct)
+FRAME frame_struct;
+{
+ CORE_ADDR frame;
+ CORE_ADDR pc;
+ CORE_ADDR pc1;
+ CORE_ADDR sp ;
+ CORE_ADDR fp;
+
+ frame = frame_struct->frame;
+ pc = frame_struct->pc;
+ sp = frame_struct->sp;
+
+ BTDEBUG("frame_saved_pc input: frame %x, pc %x",
+ frame, pc);
+
+ /* First see if this is the current frame. If it is, return the value in r1,
+ as it may not have been stored */
+
+ fp = read_register(FP_REGNUM);
+
+ /* check to see if we are in an entry sequence, where the return pointer has not yet been stored */
+ if (fp == frame && no_stored_rp(pc))
+ {
+ pc = read_register(RP_REGNUM);
+ frame_struct->rp = pc;
+ }
+ else if( ! g_routine(pc) )
+ {
+ caller_pc(pc,sp,&pc,&frame);
+ }
+ else
+ {
+
+ pc = read_memory_integer (frame + 4, sizeof(long));
+
+ if (!outside_startup_file(pc))
+ {
+
+ BTDEBUG("pc %x outside startup file \n",pc);
+
+ pc1 = read_memory_integer (frame, sizeof(long));
+
+ if (outside_startup_file(pc1))
+ pc = pc1;
+ else
+ pc = 0;
+ }
+ }
+ BTDEBUG(" returning pc %x\n", CLEAN_PC(pc));
+ return(CLEAN_PC(pc));
+
+ }
+
+/* Pass arguments to a function in the inferior process - ABI compliant
+ Note that this routine DOES NOT HANDLE memory argument lists, ie
+ it gives up if there are too many arguments to pass in registers.*/
+
+void
+pass_function_arguments(args, nargs, struct_return)
+ value *args;
+ int nargs;
+ int struct_return;
+{
+ int ireg = (struct_return) ? 17 : 16;
+ int freg = FP0_REGNUM + 8;
+ int i;
+ struct type *type;
+ value arg;
+ long tmp;
+ value value_arg_coerce();
- if (prevadr)
+
+ for (i = 0; i < nargs; i++)
{
- brk->address1 = prevadr;
- if (brk->mode == DIM)
+ arg = value_arg_coerce(args[i]);
+ type = VALUE_TYPE(arg);
+ if (type == builtin_type_double)
{
- brk->act_addr[2] = CORADR(prevadr);
- brk->act_addr[3] = FOPADR(prevadr);
- } else {
- brk->act_addr[2] = prevadr;
- brk->act_addr[3] = 0;
+ write_register_bytes(REGISTER_BYTE(freg), VALUE_CONTENTS(arg), sizeof(double));
+ freg += 2;
+ }
+ else
+ {
+ bcopy(VALUE_CONTENTS(arg), &tmp, sizeof(long));
+ write_register(ireg, tmp);
+ ireg++;
}
- } else {
- brk->act_addr[2] = brk->act_addr[3] = 0;
}
- return val;
+ if (ireg >= 28 || freg >= FP0_REGNUM + 16)
+ error("Too many arguments to function");
+}
+
+
+#define SPACES " "
+#define P_SPACES " "
+#define BYTE 0xff
+
+int screen_lines=24;
+
+char *spec_reg[] = {
+ "fsr", "db", "dirbase", "fir", "psr", "epsr",
+};
+
+char *doro_reg[] = {
+ "scp", "cbsp", "pt_cs", "intmsk", "intack",
+};
+#define NREGS 32
+
+#if 0
+/* This routine is uncalled -- remove this routine sometime */
+get_reg(regno)
+{
+ char raw_buffer[32];
+ int addr;
+ int virtual_buffer;
+
+ read_relative_register_raw_bytes (regno, raw_buffer);
+ REGISTER_CONVERT_TO_VIRTUAL (addr, raw_buffer, &virtual_buffer);
+ return(virtual_buffer);
}
+#endif
+
+
+#if 0
+/* This routine is uncalled. Remove it sometime. */
/*
** Figure out whether we are in a delayed slot and if so then take necessary
CORE_ADDR addr, *nextpc;
int ss;
{
- long nextadr, instr;
+ CORE_ADDR nextadr, instr;
int val = not_branch;
long offset; /* Must be signed for sign-extend */
{
if (INDIM)
{
- nextadr = CORADR((int)(addr + 8));
- instr = adj_read_memory_integer (CORADR(addr));
+ nextadr = CORADR((int)(addr + INSTRUCTION_LENGTH*2));
+ instr = (unsigned)(adj_read_memory_integer (CORADR(addr)));
}
else
{
- nextadr = addr + 4;
- instr = adj_read_memory_integer (addr);
+ nextadr = addr + INSTRUCTION_LENGTH;
+ instr = (unsigned)(adj_read_memory_integer (addr));
}
} else {
if (ISDIM(addr))
{
nextadr = CORADR(addr);
- instr = adj_read_memory_integer (nextadr);
+ instr = (unsigned)(adj_read_memory_integer (nextadr));
}
else
{
nextadr = addr;
- instr = adj_read_memory_integer (addr);
+ instr = (unsigned)(adj_read_memory_integer (addr));
}
}
*nextpc = nextadr;
return val;
}
+#endif
extern char registers[];
-i860_do_registers_info(regnum,fpregs)
+/* i860-specific routine to print the register set. Note that we ALWAYS print information
+ on the floating point registers, so we ignore the parameter fpregs */
+void i860_do_registers_info(regnum,fpregs)
int regnum;
int fpregs;
{
unsigned int val;
unsigned int j,k;
+
if (regnum == -1)
printf_filtered (
"Register Contents (relative to selected stack frame)\n\n");
printf("\n Integer Registers :- \n\t");
for (j=R0; j<=R31; j++)
{
- if (j != IREGS && (j % 4 == 0))
+ if (j != IREGS && (j % REGISTER_LENGTH == 0))
{
printf("\n\t"); fflush(stdout);
}
printf("\n Floating Registers :- \n\t");
for (j=F0; j<=F31; j++)
{
- if (j != FREGS && (j % 4 == 0))
+ if (j != FREGS && (j % REGISTER_LENGTH == 0))
{
printf("\n\t"); fflush(stdout);
}
printf("\n Graphics Pipeline :- \n");
{
- unsigned int valh, val2,val3;
+ unsigned int valh;
j = PSV_I1;
bcopy (®isters[j<<2], &val, sizeof (long));
bcopy (®isters[(j+1)<<2], &valh, sizeof (long));
}
printf(" Memory Load Pipeline :- \n");
- for (j=PSV_L1; j<=PSV_L3; j+=4)
+ for (j=PSV_L1; j<=PSV_L3; j+=REGISTER_LENGTH)
{
unsigned int valh, val2,val3;
bcopy (®isters[j<<2], &val, sizeof (long));
}
-int has_stored_r1(CORE_ADDR prologue_start, CORE_ADDR prologue_end)
-{
- long instr;
- CORE_ADDR addr;
-
- BTDEBUG("has_stored_r1, prologue_start %x, prologue_end %x\n",
- prologue_start, prologue_end);
-
- for (addr = prologue_start; addr <= prologue_end; addr += 4)
- {
-
- instr = adj_read_memory_integer (addr);
- if ((instr & 0xFFE0F801) == 0x1C400801 /* st.l r1,X(sp) */
- || (instr & 0xFFE0F801) == 0x1C600801) /* st.l r1,X(fp) */
- return (1);
- }
- return 0;
-}
-
-/* This function returns 1 if there is no stored r1, 0 otherwise.
- The function returns 1 if the pc is in a function prologue,
- or the function prologue didn't save the return pointer in
- the stack frame, 0 otherwise */
-
-int no_stored_rp(CORE_ADDR pc)
-{
- CORE_ADDR func_start, prologue_end;
-
- func_start = get_pc_function_start(pc);
- if (func_start)
- {
- prologue_end = func_start;
- SKIP_PROLOGUE(prologue_end);
- if ( (pc >= func_start) && (pc <= prologue_end))
- {
- BTDEBUG("no_stored_rp: pc %x is in prologue \n",pc);
- return 1;
- }
- /* otherwise, see if the entry sequence stored the return pointer.
- If it didn't, return 1 */
- /* Some procedures , at least, store the return pointer AFTER the prologue sequence! */
- if (!has_stored_r1(func_start, pc))
- {
- BTDEBUG("no_stored_rp, for pc %x, prologue didn't store r1\n",pc);
- return 1;
- }
- }
- BTDEBUG("no_stored_rp for pc %x return pointer was stored \n", pc);
- return 0;
-}
/* The following set of routines was adapted from existing code previously
in an i860-specific version of breakpoint.c by Peggy Fieland
(Margaret_Fieland@vos.stratus.com) */
+/* routines to set a data breakpoint by setting the value in the DB register.
+ Note that "hitting" the breakpoint will generate a data access trap. We
+ do not have a special trap handler. */
unsigned int dbrkval, dbrkmod;
void i860_dbrk_breakpoint()
{
BTDEBUG("i860_dbrk_breakpoint was called , dbrkval %x\n", dbrkval);
- if (dbrkval)
+ if (dbrkval != 0)
{
*(int *)®isters[DB<<2] = dbrkval;
}
}
+/* set a "read" data breakpoint. */
void
d_ro_break_command(arg)
char *arg;
{
dbrkval = strtoul(arg, NULL, 0);
dbrkmod = 0x01;
-printf(" ro_dbreak - %x %x\n", dbrkval, dbrkmod);
+ BTDEBUG(" ro_dbreak - %x %x\n", dbrkval, dbrkmod);
}
+/* set a "write" data breakpoint. */
void
d_wo_break_command(arg)
char *arg;
{
dbrkval = strtoul(arg, NULL, 0);
dbrkmod = 0x02;
-printf(" wo_dbreak - %x %x\n", dbrkval, dbrkmod);
+ BTDEBUG(" wo_dbreak - %x %x\n", dbrkval, dbrkmod);
}
+/* set a "read/write" data breakpoint. */
void
d_rw_break_command(arg)
char *arg;
{
dbrkval = strtoul(arg, NULL, 0);
dbrkmod = 0x03;
-printf(" rw_dbreak - %x %x\n", dbrkval, dbrkmod);
+ BTDEBUG(" rw_dbreak - %x %x\n", dbrkval, dbrkmod);
}
+/* clear data breakpoint. */
void
clear_dbreak()
{
dbrkmod = 0;
}
+/* i860-specific breakpoint initialization. Includes adding the i860-specific
+ data breakpoint commands. */
void
i860_init_breakpoints()
{
}
+/* i860-specific code to insert a breakpoint. */
int i860_insert_breakpoint(b)
struct breakpoint *b;
{
if (b->mode == DIM)
{
- adj_read_memory (b->act_addr[0], &b->shadow_contents[0], 4);
- val = adj_write_memory (b->act_addr[0], break_insn, 4);
- if (val) return val;
- adj_read_memory (b->act_addr[1], &b->shadow_contents[1], 4);
- /* val = adj_write_memory (b->act_addr[1], float_insn, 4); */
- if (val) return val;
+ adj_read_memory (b->act_addr[0], &b->shadow_contents[0], INSTRUCTION_LENGTH);
+ val = adj_write_memory (b->act_addr[0], break_insn, INSTRUCTION_LENGTH);
+ if (val != 0 ) return val;
+ adj_read_memory (b->act_addr[1], &b->shadow_contents[1], INSTRUCTION_LENGTH);
+ /* val = adj_write_memory (b->act_addr[1], float_insn, INSTRUCTION_LENGTH); */
+ if (val != 0) return val;
}
else
{
- adj_read_memory (b->act_addr[0], &b->shadow_contents[0], 4);
- val = adj_write_memory (b->act_addr[0], break_insn, 4);
+ adj_read_memory (b->act_addr[0], &b->shadow_contents[0], INSTRUCTION_LENGTH);
+ val = adj_write_memory (b->act_addr[0], break_insn, INSTRUCTION_LENGTH);
}
- if (b->address1)
+ if (b->address1 != 0)
{
if (b->mode == DIM)
{
- adj_read_memory (b->act_addr[2], &b->shadow_contents[2], 4);
- val = adj_write_memory (b->act_addr[2], break_insn, 4);
- if (val) return val;
- adj_read_memory (b->act_addr[3], &b->shadow_contents[3], 4);
- /* val = adj_write_memory (b->act_addr[3], float_insn, 4); */
+ adj_read_memory (b->act_addr[2], &b->shadow_contents[2], INSTRUCTION_LENGTH);
+ val = adj_write_memory (b->act_addr[2], break_insn, INSTRUCTION_LENGTH);
if (val) return val;
+ adj_read_memory (b->act_addr[3], &b->shadow_contents[3], INSTRUCTION_LENGTH);
+ /* val = adj_write_memory (b->act_addr[3], float_insn, INSTRUCTION_LENGTH); */
+ if (val != 0) return val;
}
else
{
- adj_read_memory (b->act_addr[2], &b->shadow_contents[0], 4);
- val = adj_write_memory (b->act_addr[2], break_insn, 4);
+ adj_read_memory (b->act_addr[2], &b->shadow_contents[0], INSTRUCTION_LENGTH);
+ val = adj_write_memory (b->act_addr[2], break_insn, INSTRUCTION_LENGTH);
}
}
- if (val)
+ if (val != 0)
return val;
BTDEBUG("Inserted breakpoint at 0x%x, shadow 0x%x, 0x%x.\n",
b->address, b->shadow_contents[0], b->shadow_contents[1]);
{
if (b->mode == DIM)
{
- val =adj_write_memory (b->act_addr[0], &(b->shadow_contents[0]), 4);
- val =adj_write_memory (b->act_addr[1], &(b->shadow_contents[1]), 4);
- if (b->address1)
+ val =adj_write_memory (b->act_addr[0], &(b->shadow_contents[0]),
+ INSTRUCTION_LENGTH);
+ val =adj_write_memory (b->act_addr[1], &(b->shadow_contents[1]),
+ INSTRUCTION_LENGTH);
+ if (b->address1 != NULL)
{
- val =adj_write_memory (b->act_addr[2], &(b->shadow_contents[2]), 4);
- val =adj_write_memory (b->act_addr[3], &(b->shadow_contents[3]), 4);
+ val =adj_write_memory (b->act_addr[2], &(b->shadow_contents[2]),
+ INSTRUCTION_LENGTH);
+ val =adj_write_memory (b->act_addr[3], &(b->shadow_contents[3]),
+ INSTRUCTION_LENGTH);
}
}
else
{
- val =adj_write_memory (b->act_addr[0], b->shadow_contents, 4);
- if (b->address1)
+ val =adj_write_memory (b->act_addr[0], b->shadow_contents,
+ INSTRUCTION_LENGTH);
+ if (b->address1 != NULL)
{
- val =adj_write_memory (b->act_addr[2], b->shadow_contents, 4);
+ val =adj_write_memory (b->act_addr[2], b->shadow_contents,
+ INSTRUCTION_LENGTH);
}
}
- if (val)
+ if (val != 0)
return val;
b->inserted = 0;
BTDEBUG( "Removed breakpoint at 0x%x, shadow 0x%x, 0x%x.\n",
}
}
+/* Given a pointer to a general register set in /proc format (gregset_t *),
+ update the register specified by REGNO from gdb's idea
+ of the current general register set. If REGNO is -1, update
+ them all. */
+
void
fill_gregset (gregsetp, regno)
gregset_t *gregsetp;
}
}
#endif
-
projects / binutils-gdb.git / commitdiff