-/* Target-dependent code for MItsubishi D10V, for GDB.
- Copyright (C) 1996 Free Software Foundation, Inc.
+/* Target-dependent code for Mitsubishi D10V, for GDB.
+ Copyright (C) 1996, 1997 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "gdbtypes.h"
#include "gdbcmd.h"
#include "gdbcore.h"
+#include "gdb_string.h"
#include "value.h"
#include "inferior.h"
#include "dis-asm.h"
+#include "symfile.h"
+#include "objfiles.h"
-void d10v_frame_find_saved_regs PARAMS ((struct frame_info *fi, struct frame_saved_regs *fsr));
+void d10v_frame_find_saved_regs PARAMS ((struct frame_info *fi,
+ struct frame_saved_regs *fsr));
-/* Discard from the stack the innermost frame,
- restoring all saved registers. */
+/* Discard from the stack the innermost frame, restoring all saved
+ registers. */
void
-d10v_pop_frame ()
+d10v_pop_frame (frame)
+ struct frame_info *frame;
{
- struct frame_info *frame = get_current_frame ();
- CORE_ADDR fp, r13;
+ CORE_ADDR fp;
int regnum;
struct frame_saved_regs fsr;
char raw_buffer[8];
fp = FRAME_FP (frame);
- /* printf("pop_frame 0x%x\n",fp); */
-
/* fill out fsr with the address of where each */
/* register was stored in the frame */
get_frame_saved_regs (frame, &fsr);
- /* r13 contains the old PC. save it. */
- r13 = read_register (13);
-
/* now update the current registers with the old values */
for (regnum = A0_REGNUM; regnum < A0_REGNUM+2 ; regnum++)
{
if (fsr.regs[regnum])
{
- read_memory (fsr.regs[regnum] & 0xFFFF, raw_buffer, 8);
- write_register_bytes (REGISTER_BYTE (regnum), raw_buffer, 8);
+ read_memory (fsr.regs[regnum], raw_buffer, REGISTER_RAW_SIZE(regnum));
+ write_register_bytes (REGISTER_BYTE (regnum), raw_buffer, REGISTER_RAW_SIZE(regnum));
}
}
for (regnum = 0; regnum < SP_REGNUM; regnum++)
{
if (fsr.regs[regnum])
{
- write_register (regnum, read_memory_integer (fsr.regs[regnum] & 0xFFFF, 2));
+ write_register (regnum, read_memory_unsigned_integer (fsr.regs[regnum], REGISTER_RAW_SIZE(regnum)));
}
}
if (fsr.regs[PSW_REGNUM])
{
- write_register (PSW_REGNUM, read_memory_integer (fsr.regs[PSW_REGNUM] & 0xFFFF, 2));
+ write_register (PSW_REGNUM, read_memory_unsigned_integer (fsr.regs[PSW_REGNUM], REGISTER_RAW_SIZE(PSW_REGNUM)));
}
- /* PC is set to r13 */
- write_register (PC_REGNUM, r13);
- /* printf("setting stack to %x\n",fp - frame->size); */
- write_register (SP_REGNUM, fp - frame->size);
+ write_register (PC_REGNUM, read_register (LR_REGNUM));
+ write_register (SP_REGNUM, fp + frame->size);
+ target_store_registers (-1);
flush_cached_frames ();
}
if ((op & 0x7E3F) == 0x3A1E)
return 1;
-
return 0;
}
{
unsigned long op;
unsigned short op1, op2;
+ CORE_ADDR func_addr, func_end;
+ struct symtab_and_line sal;
+ /* If we have line debugging information, then the end of the */
+ /* prologue should the first assembly instruction of the first source line */
+ if (find_pc_partial_function (pc, NULL, &func_addr, &func_end))
+ {
+ sal = find_pc_line (func_addr, 0);
+ if ( sal.end && sal.end < func_end)
+ return sal.end;
+ }
+
if (target_read_memory (pc, (char *)&op, 4))
return pc; /* Can't access it -- assume no prologue. */
while (1)
{
- op = read_memory_integer (pc, 4);
+ op = (unsigned long)read_memory_integer (pc, 4);
if ((op & 0xC0000000) == 0xC0000000)
{
/* long instruction */
else
{
/* short instructions */
- op1 = (op & 0x3FFF8000) >> 15;
- op2 = op & 0x7FFF;
- if (!check_prologue(op1) || !check_prologue(op2))
+ if ((op & 0xC0000000) == 0x80000000)
+ {
+ op2 = (op & 0x3FFF8000) >> 15;
+ op1 = op & 0x7FFF;
+ }
+ else
+ {
+ op1 = (op & 0x3FFF8000) >> 15;
+ op2 = op & 0x7FFF;
+ }
+ if (check_prologue(op1))
+ {
+ if (!check_prologue(op2))
+ {
+ /* if the previous opcode was really part of the prologue */
+ /* and not just a NOP, then we want to break after both instructions */
+ if (op1 != 0x5E00)
+ pc += 4;
+ break;
+ }
+ }
+ else
break;
}
pc += 4;
}
return pc;
}
-
+
/* Given a GDB frame, determine the address of the calling function's frame.
This will be used to create a new GDB frame struct, and then
INIT_EXTRA_FRAME_INFO and INIT_FRAME_PC will be called for the new frame.
-
- For us, the frame address is its stack pointer value, so we look up
- the function prologue to determine the caller's sp value, and return it. */
+*/
CORE_ADDR
d10v_frame_chain (frame)
struct frame_info *frame;
{
struct frame_saved_regs fsr;
- /* printf("frame_chain %x\n",frame->frame); */
+
d10v_frame_find_saved_regs (frame, &fsr);
- /* printf("pc=%x\n",fsr.regs[PC_REGNUM]);
- printf("fp=%x (%x)\n",fsr.regs[FP_REGNUM],read_memory_integer(fsr.regs[FP_REGNUM],2) & 0xffff); */
- return read_memory_integer(fsr.regs[FP_REGNUM],2) & 0xffff;
+
+ if (frame->return_pc == IMEM_START || inside_entry_file(frame->return_pc))
+ return (CORE_ADDR)0;
+
+ if (!fsr.regs[FP_REGNUM])
+ {
+ if (!fsr.regs[SP_REGNUM] || fsr.regs[SP_REGNUM] == STACK_START)
+ return (CORE_ADDR)0;
+
+ return fsr.regs[SP_REGNUM];
+ }
+
+ if (!read_memory_unsigned_integer(fsr.regs[FP_REGNUM], REGISTER_RAW_SIZE(FP_REGNUM)))
+ return (CORE_ADDR)0;
+
+ return D10V_MAKE_DADDR (read_memory_unsigned_integer (fsr.regs[FP_REGNUM], REGISTER_RAW_SIZE (FP_REGNUM)));
}
-static int next_addr;
+static int next_addr, uses_frame;
static int
prologue_find_regs (op, fsr, addr)
/* mv r11, sp */
if (op == 0x417E)
- return 1;
+ {
+ uses_frame = 1;
+ return 1;
+ }
/* nop */
if (op == 0x5E00)
pc = get_pc_function_start (fi->pc);
+ uses_frame = 0;
while (1)
{
- op = read_memory_integer (pc, 4);
+ op = (unsigned long)read_memory_integer (pc, 4);
if ((op & 0xC0000000) == 0xC0000000)
{
/* long instruction */
else
{
/* short instructions */
- op1 = (op & 0x3FFF8000) >> 15;
- op2 = op & 0x7FFF;
+ if ((op & 0xC0000000) == 0x80000000)
+ {
+ op2 = (op & 0x3FFF8000) >> 15;
+ op1 = op & 0x7FFF;
+ }
+ else
+ {
+ op1 = (op & 0x3FFF8000) >> 15;
+ op2 = op & 0x7FFF;
+ }
if (!prologue_find_regs(op1,fsr,pc) || !prologue_find_regs(op2,fsr,pc))
break;
}
}
fi->size = -next_addr;
- fi->return_pc = read_register (13);
- for (i=0; i<NUM_REGS; i++)
+ if (!(fp & 0xffff))
+ fp = D10V_MAKE_DADDR (read_register(SP_REGNUM));
+
+ for (i=0; i<NUM_REGS-1; i++)
if (fsr->regs[i])
{
fsr->regs[i] = fp - (next_addr - fsr->regs[i]);
- /* printf("register %d = *(%x) = %x\n",i,fsr->regs[i],read_memory_integer((fsr->regs[i]) & 0xffff, 2)); */
}
+
+ if (fsr->regs[LR_REGNUM])
+ {
+ CORE_ADDR return_pc = read_memory_unsigned_integer (fsr->regs[LR_REGNUM], REGISTER_RAW_SIZE (LR_REGNUM));
+ fi->return_pc = D10V_MAKE_IADDR (return_pc);
+ }
+ else
+ {
+ fi->return_pc = D10V_MAKE_IADDR (read_register(LR_REGNUM));
+ }
+
+ /* th SP is not normally (ever?) saved, but check anyway */
+ if (!fsr->regs[SP_REGNUM])
+ {
+ /* if the FP was saved, that means the current FP is valid, */
+ /* otherwise, it isn't being used, so we use the SP instead */
+ if (uses_frame)
+ fsr->regs[SP_REGNUM] = read_register(FP_REGNUM) + fi->size;
+ else
+ {
+ fsr->regs[SP_REGNUM] = fp + fi->size;
+ fi->frameless = 1;
+ fsr->regs[FP_REGNUM] = 0;
+ }
+ }
}
void
int fromleaf;
struct frame_info *fi;
{
- struct frame_saved_regs dummy;
- /* printf("extra init %x next=%x pc=%x\n",fi->frame,fi->next,fi->pc); */
+ fi->frameless = 0;
+ fi->size = 0;
+ fi->return_pc = 0;
- /* fi->pc = fi->next->return_pc; */
- d10v_frame_find_saved_regs (fi, &dummy);
- /* printf(" %x next=%x pc=%x\n",fi->frame,fi->next,fi->pc); */
+ /* The call dummy doesn't save any registers on the stack, so we can
+ return now. */
+ if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame))
+ {
+ return;
+ }
+ else
+ {
+ struct frame_saved_regs dummy;
+ d10v_frame_find_saved_regs (fi, &dummy);
+ }
}
static void
char *args;
int from_tty;
{
- long long num1, num2;
+ int a;
printf_filtered ("PC=%04x (0x%x) PSW=%04x RPT_S=%04x RPT_E=%04x RPT_C=%04x\n",
- read_register (PC_REGNUM), read_register (PC_REGNUM) << 2,
+ read_register (PC_REGNUM), D10V_MAKE_IADDR (read_register (PC_REGNUM)),
read_register (PSW_REGNUM),
read_register (24),
read_register (25),
read_register (13),
read_register (14),
read_register (15));
- read_register_gen (A0_REGNUM, (char *)&num1);
- read_register_gen (A0_REGNUM+1, (char *)&num2);
- printf_filtered ("A0-A1 %010llx %010llx\n",num1, num2);
-}
-
-void
-_initialize_d10v_tdep ()
-{
- struct cmd_list_element *c;
- tm_print_insn = print_insn_d10v;
- add_com ("regs", class_vars, show_regs, "Print all registers");
-}
+ printf_filtered ("IMAP0 %04x IMAP1 %04x DMAP %04x\n",
+ read_register (IMAP0_REGNUM),
+ read_register (IMAP1_REGNUM),
+ read_register (DMAP_REGNUM));
+ printf_filtered ("A0-A1");
+ for (a = A0_REGNUM; a <= A0_REGNUM + 1; a++)
+ {
+ char num[MAX_REGISTER_RAW_SIZE];
+ int i;
+ printf_filtered (" ");
+ read_register_gen (a, (char *)&num);
+ for (i = 0; i < MAX_REGISTER_RAW_SIZE; i++)
+ {
+ printf_filtered ("%02x", (num[i] & 0xff));
+ }
+ }
+ printf_filtered ("\n");
+}
CORE_ADDR
-d10v_read_register_pid (regno, pid)
- int regno, pid;
+d10v_read_pc (pid)
+ int pid;
{
int save_pid;
+ CORE_ADDR pc;
CORE_ADDR retval;
- if (pid == inferior_pid)
- return (read_register(regno)) << 2;
-
save_pid = inferior_pid;
inferior_pid = pid;
- retval = read_register (regno);
+ pc = (int) read_register (PC_REGNUM);
inferior_pid = save_pid;
- return (retval << 2);
+ retval = D10V_MAKE_IADDR (pc);
+ return retval;
}
void
-d10v_write_register_pid (regno, val, pid)
- int regno;
- LONGEST val;
+d10v_write_pc (val, pid)
+ CORE_ADDR val;
int pid;
{
int save_pid;
- val >>= 2;
+ save_pid = inferior_pid;
+ inferior_pid = pid;
+ write_register (PC_REGNUM, D10V_CONVERT_IADDR_TO_RAW (val));
+ inferior_pid = save_pid;
+}
+
+CORE_ADDR
+d10v_read_sp ()
+{
+ return (D10V_MAKE_DADDR (read_register (SP_REGNUM)));
+}
+
+void
+d10v_write_sp (val)
+ CORE_ADDR val;
+{
+ write_register (SP_REGNUM, D10V_CONVERT_DADDR_TO_RAW (val));
+}
+
+void
+d10v_write_fp (val)
+ CORE_ADDR val;
+{
+ write_register (FP_REGNUM, D10V_CONVERT_DADDR_TO_RAW (val));
+}
- if (pid == inferior_pid)
+CORE_ADDR
+d10v_read_fp ()
+{
+ return (D10V_MAKE_DADDR (read_register(FP_REGNUM)));
+}
+
+/* Function: push_return_address (pc)
+ Set up the return address for the inferior function call.
+ Needed for targets where we don't actually execute a JSR/BSR instruction */
+
+CORE_ADDR
+d10v_push_return_address (pc, sp)
+ CORE_ADDR pc;
+ CORE_ADDR sp;
+{
+ write_register (LR_REGNUM, D10V_CONVERT_IADDR_TO_RAW (CALL_DUMMY_ADDRESS ()));
+ return sp;
+}
+
+
+CORE_ADDR
+d10v_push_arguments (nargs, args, sp, struct_return, struct_addr)
+ int nargs;
+ value_ptr *args;
+ CORE_ADDR sp;
+ int struct_return;
+ CORE_ADDR struct_addr;
+{
+ int i;
+ int regnum = ARG1_REGNUM;
+
+ /* Fill in registers and arg lists */
+ for (i = 0; i < nargs; i++)
{
- write_register (regno, val);
- return;
+ value_ptr arg = args[i];
+ struct type *type = check_typedef (VALUE_TYPE (arg));
+ char *contents = VALUE_CONTENTS (arg);
+ int len = TYPE_LENGTH (type);
+ /* printf ("push: type=%d len=%d\n", type->code, len); */
+ if (TYPE_CODE (type) == TYPE_CODE_PTR)
+ {
+ /* pointers require special handling - first convert and
+ then store */
+ long val = extract_signed_integer (contents, len);
+ len = 2;
+ if (TYPE_TARGET_TYPE (type)
+ && (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_FUNC))
+ {
+ /* function pointer */
+ val = D10V_CONVERT_IADDR_TO_RAW (val);
+ }
+ else if (D10V_IADDR_P (val))
+ {
+ /* also function pointer! */
+ val = D10V_CONVERT_DADDR_TO_RAW (val);
+ }
+ else
+ {
+ /* data pointer */
+ val &= 0xFFFF;
+ }
+ if (regnum <= ARGN_REGNUM)
+ write_register (regnum++, val & 0xffff);
+ else
+ {
+ char ptr[2];
+ sp -= 2;
+ store_address (ptr, val & 0xffff, 2);
+ write_memory (sp, ptr, 2);
+ }
+ }
+ else
+ {
+ int aligned_regnum = (regnum + 1) & ~1;
+ if (len <= 2 && regnum <= ARGN_REGNUM)
+ /* fits in a single register, do not align */
+ {
+ long val = extract_unsigned_integer (contents, len);
+ write_register (regnum++, val);
+ }
+ else if (len <= (ARGN_REGNUM - aligned_regnum + 1) * 2)
+ /* value fits in remaining registers, store keeping left
+ aligned */
+ {
+ int b;
+ regnum = aligned_regnum;
+ for (b = 0; b < (len & ~1); b += 2)
+ {
+ long val = extract_unsigned_integer (&contents[b], 2);
+ write_register (regnum++, val);
+ }
+ if (b < len)
+ {
+ long val = extract_unsigned_integer (&contents[b], 1);
+ write_register (regnum++, (val << 8));
+ }
+ }
+ else
+ {
+ /* arg goes straight on stack */
+ regnum = ARGN_REGNUM + 1;
+ sp = (sp - len) & ~1;
+ write_memory (sp, contents, len);
+ }
+ }
}
+ return sp;
+}
- save_pid = inferior_pid;
- inferior_pid = pid;
- write_register (regno, val);
- inferior_pid = save_pid;
+
+/* Given a return value in `regbuf' with a type `valtype',
+ extract and copy its value into `valbuf'. */
+
+void
+d10v_extract_return_value (type, regbuf, valbuf)
+ struct type *type;
+ char regbuf[REGISTER_BYTES];
+ char *valbuf;
+{
+ int len;
+ /* printf("RET: TYPE=%d len=%d r%d=0x%x\n",type->code, TYPE_LENGTH (type), RET1_REGNUM - R0_REGNUM, (int) extract_unsigned_integer (regbuf + REGISTER_BYTE(RET1_REGNUM), REGISTER_RAW_SIZE (RET1_REGNUM))); */
+ if (TYPE_CODE (type) == TYPE_CODE_PTR
+ && TYPE_TARGET_TYPE (type)
+ && (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_FUNC))
+ {
+ /* pointer to function */
+ int num;
+ short snum;
+ snum = extract_address (regbuf + REGISTER_BYTE (RET1_REGNUM), REGISTER_RAW_SIZE (RET1_REGNUM));
+ store_address ( valbuf, 4, D10V_MAKE_IADDR(snum));
+ }
+ else if (TYPE_CODE(type) == TYPE_CODE_PTR)
+ {
+ /* pointer to data */
+ int num;
+ short snum;
+ snum = extract_address (regbuf + REGISTER_BYTE (RET1_REGNUM), REGISTER_RAW_SIZE (RET1_REGNUM));
+ store_address ( valbuf, 4, D10V_MAKE_DADDR(snum));
+ }
+ else
+ {
+ len = TYPE_LENGTH (type);
+ if (len == 1)
+ {
+ unsigned short c = extract_unsigned_integer (regbuf + REGISTER_BYTE (RET1_REGNUM), REGISTER_RAW_SIZE (RET1_REGNUM));
+ store_unsigned_integer (valbuf, 1, c);
+ }
+ else
+ memcpy (valbuf, regbuf + REGISTER_BYTE (RET1_REGNUM), len);
+ }
+}
+
+/* The following code implements access to, and display of, the D10V's
+ instruction trace buffer. The buffer consists of 64K or more
+ 4-byte words of data, of which each words includes an 8-bit count,
+ an 8-bit segment number, and a 16-bit instruction address.
+
+ In theory, the trace buffer is continuously capturing instruction
+ data that the CPU presents on its "debug bus", but in practice, the
+ ROMified GDB stub only enables tracing when it continues or steps
+ the program, and stops tracing when the program stops; so it
+ actually works for GDB to read the buffer counter out of memory and
+ then read each trace word. The counter records where the tracing
+ stops, but there is no record of where it started, so we remember
+ the PC when we resumed and then search backwards in the trace
+ buffer for a word that includes that address. This is not perfect,
+ because you will miss trace data if the resumption PC is the target
+ of a branch. (The value of the buffer counter is semi-random, any
+ trace data from a previous program stop is gone.) */
+
+/* The address of the last word recorded in the trace buffer. */
+
+#define DBBC_ADDR (0xd80000)
+
+/* The base of the trace buffer, at least for the "Board_0". */
+
+#define TRACE_BUFFER_BASE (0xf40000)
+
+static void trace_command PARAMS ((char *, int));
+
+static void untrace_command PARAMS ((char *, int));
+
+static void trace_info PARAMS ((char *, int));
+
+static void tdisassemble_command PARAMS ((char *, int));
+
+static void display_trace PARAMS ((int, int));
+
+/* True when instruction traces are being collected. */
+
+static int tracing;
+
+/* Remembered PC. */
+
+static CORE_ADDR last_pc;
+
+/* True when trace output should be displayed whenever program stops. */
+
+static int trace_display;
+
+/* True when trace listing should include source lines. */
+
+static int default_trace_show_source = 1;
+
+struct trace_buffer {
+ int size;
+ short *counts;
+ CORE_ADDR *addrs;
+} trace_data;
+
+static void
+trace_command (args, from_tty)
+ char *args;
+ int from_tty;
+{
+ /* Clear the host-side trace buffer, allocating space if needed. */
+ trace_data.size = 0;
+ if (trace_data.counts == NULL)
+ trace_data.counts = (short *) xmalloc (65536 * sizeof(short));
+ if (trace_data.addrs == NULL)
+ trace_data.addrs = (CORE_ADDR *) xmalloc (65536 * sizeof(CORE_ADDR));
+
+ tracing = 1;
+
+ printf_filtered ("Tracing is now on.\n");
+}
+
+static void
+untrace_command (args, from_tty)
+ char *args;
+ int from_tty;
+{
+ tracing = 0;
+
+ printf_filtered ("Tracing is now off.\n");
+}
+
+static void
+trace_info (args, from_tty)
+ char *args;
+ int from_tty;
+{
+ int i;
+
+ if (trace_data.size)
+ {
+ printf_filtered ("%d entries in trace buffer:\n", trace_data.size);
+
+ for (i = 0; i < trace_data.size; ++i)
+ {
+ printf_filtered ("%d: %d instruction%s at 0x%x\n",
+ i, trace_data.counts[i],
+ (trace_data.counts[i] == 1 ? "" : "s"),
+ trace_data.addrs[i]);
+ }
+ }
+ else
+ printf_filtered ("No entries in trace buffer.\n");
+
+ printf_filtered ("Tracing is currently %s.\n", (tracing ? "on" : "off"));
+}
+
+/* Print the instruction at address MEMADDR in debugged memory,
+ on STREAM. Returns length of the instruction, in bytes. */
+
+static int
+print_insn (memaddr, stream)
+ CORE_ADDR memaddr;
+ GDB_FILE *stream;
+{
+ /* If there's no disassembler, something is very wrong. */
+ if (tm_print_insn == NULL)
+ abort ();
+
+ if (TARGET_BYTE_ORDER == BIG_ENDIAN)
+ tm_print_insn_info.endian = BFD_ENDIAN_BIG;
+ else
+ tm_print_insn_info.endian = BFD_ENDIAN_LITTLE;
+ return (*tm_print_insn) (memaddr, &tm_print_insn_info);
+}
+
+void
+d10v_eva_prepare_to_trace ()
+{
+ if (!tracing)
+ return;
+
+ last_pc = read_register (PC_REGNUM);
}
+
+/* Collect trace data from the target board and format it into a form
+ more useful for display. */
+
+void
+d10v_eva_get_trace_data ()
+{
+ int count, i, j, oldsize;
+ int trace_addr, trace_seg, trace_cnt, next_cnt;
+ unsigned int last_trace, trace_word, next_word;
+ unsigned int *tmpspace;
+
+ if (!tracing)
+ return;
+
+ tmpspace = xmalloc (65536 * sizeof(unsigned int));
+
+ last_trace = read_memory_unsigned_integer (DBBC_ADDR, 2) << 2;
+
+ /* Collect buffer contents from the target, stopping when we reach
+ the word recorded when execution resumed. */
+
+ count = 0;
+ while (last_trace > 0)
+ {
+ QUIT;
+ trace_word =
+ read_memory_unsigned_integer (TRACE_BUFFER_BASE + last_trace, 4);
+ trace_addr = trace_word & 0xffff;
+ last_trace -= 4;
+ /* Ignore an apparently nonsensical entry. */
+ if (trace_addr == 0xffd5)
+ continue;
+ tmpspace[count++] = trace_word;
+ if (trace_addr == last_pc)
+ break;
+ if (count > 65535)
+ break;
+ }
+
+ /* Move the data to the host-side trace buffer, adjusting counts to
+ include the last instruction executed and transforming the address
+ into something that GDB likes. */
+
+ for (i = 0; i < count; ++i)
+ {
+ trace_word = tmpspace[i];
+ next_word = ((i == 0) ? 0 : tmpspace[i - 1]);
+ trace_addr = trace_word & 0xffff;
+ next_cnt = (next_word >> 24) & 0xff;
+ j = trace_data.size + count - i - 1;
+ trace_data.addrs[j] = (trace_addr << 2) + 0x1000000;
+ trace_data.counts[j] = next_cnt + 1;
+ }
+
+ oldsize = trace_data.size;
+ trace_data.size += count;
+
+ free (tmpspace);
+
+ if (trace_display)
+ display_trace (oldsize, trace_data.size);
+}
+
+static void
+tdisassemble_command (arg, from_tty)
+ char *arg;
+ int from_tty;
+{
+ int i, count;
+ CORE_ADDR low, high;
+ char *space_index;
+
+ if (!arg)
+ {
+ low = 0;
+ high = trace_data.size;
+ }
+ else if (!(space_index = (char *) strchr (arg, ' ')))
+ {
+ low = parse_and_eval_address (arg);
+ high = low + 5;
+ }
+ else
+ {
+ /* Two arguments. */
+ *space_index = '\0';
+ low = parse_and_eval_address (arg);
+ high = parse_and_eval_address (space_index + 1);
+ if (high < low)
+ high = low;
+ }
+
+ printf_filtered ("Dump of trace from %d to %d:\n", low, high);
+
+ display_trace (low, high);
+
+ printf_filtered ("End of trace dump.\n");
+ gdb_flush (gdb_stdout);
+}
+
+static void
+display_trace (low, high)
+ int low, high;
+{
+ int i, count, trace_show_source, first, suppress;
+ CORE_ADDR next_address;
+
+ trace_show_source = default_trace_show_source;
+ if (!have_full_symbols () && !have_partial_symbols())
+ {
+ trace_show_source = 0;
+ printf_filtered ("No symbol table is loaded. Use the \"file\" command.\n");
+ printf_filtered ("Trace will not display any source.\n");
+ }
+
+ first = 1;
+ suppress = 0;
+ for (i = low; i < high; ++i)
+ {
+ next_address = trace_data.addrs[i];
+ count = trace_data.counts[i];
+ while (count-- > 0)
+ {
+ QUIT;
+ if (trace_show_source)
+ {
+ struct symtab_and_line sal, sal_prev;
+
+ sal_prev = find_pc_line (next_address - 4, 0);
+ sal = find_pc_line (next_address, 0);
+
+ if (sal.symtab)
+ {
+ if (first || sal.line != sal_prev.line)
+ print_source_lines (sal.symtab, sal.line, sal.line + 1, 0);
+ suppress = 0;
+ }
+ else
+ {
+ if (!suppress)
+ /* FIXME-32x64--assumes sal.pc fits in long. */
+ printf_filtered ("No source file for address %s.\n",
+ local_hex_string((unsigned long) sal.pc));
+ suppress = 1;
+ }
+ }
+ first = 0;
+ print_address (next_address, gdb_stdout);
+ printf_filtered (":");
+ printf_filtered ("\t");
+ wrap_here (" ");
+ next_address = next_address + print_insn (next_address, gdb_stdout);
+ printf_filtered ("\n");
+ gdb_flush (gdb_stdout);
+ }
+ }
+}
+
+extern void (*target_resume_hook) PARAMS ((void));
+extern void (*target_wait_loop_hook) PARAMS ((void));
+
+void
+_initialize_d10v_tdep ()
+{
+ tm_print_insn = print_insn_d10v;
+
+ target_resume_hook = d10v_eva_prepare_to_trace;
+ target_wait_loop_hook = d10v_eva_get_trace_data;
+
+ add_com ("regs", class_vars, show_regs, "Print all registers");
+
+ add_com ("trace", class_support, trace_command,
+ "Enable tracing of instruction execution.");
+
+ add_com ("untrace", class_support, untrace_command,
+ "Disable tracing of instruction execution.");
+
+ add_com ("tdisassemble", class_vars, tdisassemble_command,
+ "Disassemble the trace buffer.\n\
+Two optional arguments specify a range of trace buffer entries\n\
+as reported by info trace (NOT addresses!).");
+
+ add_info ("trace", trace_info,
+ "Display info about the trace data buffer.");
+
+ add_show_from_set (add_set_cmd ("tracedisplay", no_class,
+ var_integer, (char *)&trace_display,
+ "Set automatic display of trace.\n", &setlist),
+ &showlist);
+ add_show_from_set (add_set_cmd ("tracesource", no_class,
+ var_integer, (char *)&default_trace_show_source,
+ "Set display of source code with trace.\n", &setlist),
+ &showlist);
+
+}
projects / deliverable / binutils-gdb.git / blobdiff