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Diffstat (limited to 'gdb/nlm/gdbserve.c')
-rw-r--r--gdb/nlm/gdbserve.c205
1 files changed, 12 insertions, 193 deletions
diff --git a/gdb/nlm/gdbserve.c b/gdb/nlm/gdbserve.c
index e3494cc..31a0c6e 100644
--- a/gdb/nlm/gdbserve.c
+++ b/gdb/nlm/gdbserve.c
@@ -70,16 +70,14 @@
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
-/*#include <ctype.h>*/
#include <time.h>
-/*#include <aio.h>*/
#include <nwconio.h>
#include <nwadv.h>
#include <nwdbgapi.h>
-/*#include <process.h>*/
#include <errno.h>
#include <nwthread.h>
-#include "alpha-patch.h"
+#include <aio.h>
+#include "cpu.h"
/****************************************************/
/* This information is from Novell. It is not in any of the standard
@@ -142,28 +140,12 @@ static int remote_debug = 1;
static const char hexchars[] = "0123456789abcdef";
-/* Register values. All of these values *MUST* agree with tm.h */
-#define RA_REGNUM 26 /* Contains return address value */
-#define SP_REGNUM 30 /* Contains address of top of stack */
-#define PC_REGNUM 64 /* Contains program counter */
-#define FP_REGNUM 65 /* Virtual frame pointer */
-#define V0_REGNUM 0 /* Function integer return value */
-#define NUM_REGS 66 /* Number of machine registers */
-#define REGISTER_BYTES (NUM_REGS * 8) /* Total size of registers array */
-
-#define ExceptionPC ExceptionRegs[SF_REG_PC].lo
-#define DECR_PC_AFTER_BREAK 0 /* NT's Palcode gets this right! */
-#define BREAKPOINT {0x80, 0, 0, 0} /* call_pal bpt */
-
unsigned char breakpoint_insn[] = BREAKPOINT;
-#define BREAKPOINT_SIZE (sizeof breakpoint_insn)
-
-/*#define flush_i_cache() asm("call_pal 0x86")*/
-static char *mem2hex (void *mem, char *buf, int count, int may_fault);
-static char *hex2mem (char *buf, void *mem, int count, int may_fault);
-static void set_step_traps (struct StackFrame *);
-static void clear_step_traps (struct StackFrame *);
+char *mem2hex (void *mem, char *buf, int count, int may_fault);
+char *hex2mem (char *buf, void *mem, int count, int may_fault);
+extern void set_step_traps (struct StackFrame *);
+extern void clear_step_traps (struct StackFrame *);
#if 0
__main() {};
@@ -214,30 +196,6 @@ putDebugChar (c)
return 1;
}
-/* Get the registers out of the frame information. */
-
-static void
-frame_to_registers (frame, regs)
- struct StackFrame *frame;
- char *regs;
-{
- mem2hex (&frame->ExceptionPC, &regs[PC_REGNUM * 8 * 2], 8 * 1, 0);
-
- mem2hex (&frame->ExceptionRegs[SF_IREG_OFFSET], &regs[V0_REGNUM * 8 * 2], 8 * 64, 0);
-}
-
-/* Put the registers back into the frame information. */
-
-static void
-registers_to_frame (regs, frame)
- char *regs;
- struct StackFrame *frame;
-{
- hex2mem (&regs[PC_REGNUM * 8 * 2], &frame->ExceptionPC, 8 * 1, 0);
-
- hex2mem (&regs[V0_REGNUM * 8 * 2], &frame->ExceptionRegs[SF_IREG_OFFSET], 8 * 64, 0);
-}
-
/* Turn a hex character into a number. */
static int
@@ -404,8 +362,9 @@ static int mem_may_fault;
/* Indicate to caller of mem2hex or hex2mem that there has been an
error. */
-static volatile int mem_err = 0;
+volatile int mem_err = 0;
+#ifndef ALTERNATE_MEM_FUNCS
/* These are separate functions so that they are so short and sweet
that the compiler won't save any registers (if there is a fault
to mem_fault, they won't get restored, so there better not be any
@@ -425,27 +384,14 @@ set_char (addr, val)
{
*addr = val;
}
-
-/* This bit of assembly language just returns from a function. If a
- memory error occurs within get_char or set_char, the debugger
- handler points EIP at these instructions to get out. */
-
-extern void just_return ();
-#if 0
-asm (".globl just_return");
-asm (".globl _just_return");
-asm ("just_return:");
-asm ("_just_return:");
-asm ("leave");
-asm ("ret");
-#endif
+#endif /* ALTERNATE_MEM_FUNCS */
/* convert the memory pointed to by mem into hex, placing result in buf */
/* return a pointer to the last char put in buf (null) */
/* If MAY_FAULT is non-zero, then we should set mem_err in response to
a fault; if zero treat a fault like any other fault in the stub. */
-static char *
+char *
mem2hex (mem, buf, count, may_fault)
void *mem;
char *buf;
@@ -473,7 +419,7 @@ mem2hex (mem, buf, count, may_fault)
/* convert the hex array pointed to by buf into binary to be placed in mem */
/* return a pointer to the character AFTER the last byte written */
-static char *
+char *
hex2mem (buf, mem, count, may_fault)
char *buf;
void *mem;
@@ -500,7 +446,7 @@ hex2mem (buf, mem, count, may_fault)
/* This function takes the 386 exception vector and attempts to
translate this number into a unix compatible signal value. */
-static int
+int
computeSignal (exceptionVector)
int exceptionVector;
{
@@ -559,133 +505,6 @@ hexToInt(ptr, intValue)
return (numChars);
}
-union inst
-{
- LONG l;
-
- struct
- {
- union
- {
- struct
- {
- unsigned hint : 16;
- unsigned rb : 5;
- unsigned ra : 5;
- unsigned opcode : 6;
- } jump;
- struct
- {
- signed disp : 21;
- unsigned ra : 5;
- unsigned opcode : 6;
- } branch;
- } variant;
- } inst;
-};
-
-static LONG saved_inst;
-static LONG *saved_inst_pc = 0;
-static LONG saved_target_inst;
-static LONG *saved_target_inst_pc = 0;
-
-static void
-set_step_traps (frame)
- struct StackFrame *frame;
-{
- union inst inst;
- LONG *target;
- int opcode;
- int ra, rb;
- LONG *pc = (LONG *)frame->ExceptionPC;
-
- inst.l = *pc++;
-
- opcode = inst.inst.variant.branch.opcode;
-
- if ((opcode & 0x30) == 0x30) /* A branch of some sort */
- target = inst.inst.variant.branch.disp + pc;
- else if (opcode == 0x1a) /* jmp, ret, etc... */
- target = (LONG *)(frame->ExceptionRegs[SF_IREG_OFFSET
- + inst.inst.variant.jump.rb].lo
- & ~3);
- else
- target = pc;
-
- saved_inst = *pc;
- *pc = 0x80; /* call_pal bpt */
- saved_inst_pc = pc;
-
- if (target != pc)
- {
- saved_target_inst = *target;
- *target = 0x80; /* call_pal bpt */
- saved_target_inst_pc = target;
- }
-}
-
-/* Remove step breakpoints. Returns non-zero if pc was at a step breakpoint,
- zero otherwise. This routine works even if there were no step breakpoints
- set. */
-
-static int
-clear_step_traps (frame)
- struct StackFrame *frame;
-{
- int retcode;
- LONG *pc = (LONG *)frame->ExceptionPC;
-
- if (saved_inst_pc == pc || saved_target_inst_pc == pc)
- retcode = 1;
- else
- retcode = 0;
-
- if (saved_inst_pc)
- {
- *saved_inst_pc = saved_inst;
- saved_inst_pc = 0;
- }
-
- if (saved_target_inst_pc)
- {
- *saved_target_inst_pc = saved_target_inst;
- saved_target_inst_pc = 0;
- }
-
- return retcode;
-}
-
-static void
-do_status (ptr, frame)
- char *ptr;
- struct StackFrame *frame;
-{
- int sigval;
-
- sigval = computeSignal (frame->ExceptionNumber);
-
- sprintf (ptr, "T%02x", sigval);
- ptr += 3;
-
- sprintf (ptr, "%02x:", PC_REGNUM);
- ptr = mem2hex (&frame->ExceptionPC, ptr + 3, 8, 0);
- *ptr++ = ';';
-
- sprintf (ptr, "%02x:", SP_REGNUM);
- ptr = mem2hex (&frame->ExceptionRegs[SF_IREG_OFFSET + SP_REGNUM], ptr + 3, 8, 0);
- *ptr++ = ';';
-
- sprintf (ptr, "%02x:", RA_REGNUM);
- ptr = mem2hex (&frame->ExceptionRegs[SF_IREG_OFFSET + RA_REGNUM], ptr + 3, 8, 0);
- *ptr++ = ';';
-
- sprintf (ptr, "%02x:", FP_REGNUM);
- ptr = mem2hex (&frame->ExceptionRegs[SF_IREG_OFFSET + FP_REGNUM], ptr + 3, 8, 0);
- *ptr++ = ';';
-
- *ptr = '\000';
-}
-
/* This function does all command processing for interfacing to gdb.
It is called whenever an exception occurs in the module being
debugged. */
generated by cgit v1.1 at 2024-12-13 13:57:09 +0000