/* Print VAX instructions for GDB, the GNU debugger.
- Copyright 1986, 1989, 1991, 1992, 1995, 1996, 1998, 1999, 2000, 2002, 2003
- Free Software Foundation, Inc.
+
+ Copyright 1986, 1989, 1991, 1992, 1995, 1996, 1998, 1999, 2000,
+ 2002, 2003, 2004 Free Software Foundation, Inc.
This file is part of GDB.
#include "arch-utils.h"
#include "gdb_string.h"
#include "osabi.h"
+#include "dis-asm.h"
#include "vax-tdep.h"
static gdbarch_register_name_ftype vax_register_name;
-static gdbarch_register_byte_ftype vax_register_byte;
-static gdbarch_register_raw_size_ftype vax_register_raw_size;
-static gdbarch_register_virtual_size_ftype vax_register_virtual_size;
-static gdbarch_register_virtual_type_ftype vax_register_virtual_type;
static gdbarch_skip_prologue_ftype vax_skip_prologue;
static gdbarch_frame_num_args_ftype vax_frame_num_args;
static gdbarch_deprecated_frame_chain_ftype vax_frame_chain;
-static gdbarch_frame_args_address_ftype vax_frame_args_address;
-static gdbarch_frame_locals_address_ftype vax_frame_locals_address;
static gdbarch_deprecated_extract_return_value_ftype vax_extract_return_value;
-static gdbarch_deprecated_extract_struct_value_address_ftype
- vax_extract_struct_value_address;
static gdbarch_deprecated_push_dummy_frame_ftype vax_push_dummy_frame;
-static gdbarch_fix_call_dummy_ftype vax_fix_call_dummy;
-
-/* Return 1 if P points to an invalid floating point value.
- LEN is the length in bytes -- not relevant on the Vax. */
-
-/* FIXME: cagney/2002-01-19: The macro below was originally defined in
- tm-vax.h and used in values.c. Two problems. Firstly this is a
- very non-portable and secondly it is wrong. The VAX should be
- using floatformat and associated methods to identify and handle
- invalid floating-point values. Adding to the poor target's woes
- there is no floatformat_vax_{f,d} and no TARGET_FLOAT_FORMAT
- et.al.. */
-
-/* FIXME: cagney/2002-01-19: It turns out that the only thing that
- uses this macro is the vax disassembler code (so how old is this
- target?). This target should instead be using the opcodes
- disassembler. That allowing the macro to be eliminated. */
-
-#define INVALID_FLOAT(p, len) ((*(short *) p & 0xff80) == 0x8000)
-
-/* Vax instructions are never longer than this. */
-#define MAXLEN 62
-
-/* Number of elements in the opcode table. */
-#define NOPCODES (sizeof votstrs / sizeof votstrs[0])
-
-static unsigned char *print_insn_arg ();
\f
static const char *
vax_register_name (int regno)
int regnum, regmask;
CORE_ADDR next_addr;
- if (get_frame_saved_regs (frame))
+ if (deprecated_get_frame_saved_regs (frame))
return;
frame_saved_regs_zalloc (frame);
for (regnum = 0; regnum < VAX_AP_REGNUM; regnum++)
{
if (regmask & (1 << regnum))
- get_frame_saved_regs (frame)[regnum] = next_addr += 4;
+ deprecated_get_frame_saved_regs (frame)[regnum] = next_addr += 4;
}
- get_frame_saved_regs (frame)[SP_REGNUM] = next_addr + 4;
- if (regmask & (1 << FP_REGNUM))
- get_frame_saved_regs (frame)[SP_REGNUM] +=
+ deprecated_get_frame_saved_regs (frame)[SP_REGNUM] = next_addr + 4;
+ if (regmask & (1 << DEPRECATED_FP_REGNUM))
+ deprecated_get_frame_saved_regs (frame)[SP_REGNUM] +=
4 + (4 * read_memory_integer (next_addr + 4, 4));
- get_frame_saved_regs (frame)[PC_REGNUM] = get_frame_base (frame) + 16;
- get_frame_saved_regs (frame)[FP_REGNUM] = get_frame_base (frame) + 12;
- get_frame_saved_regs (frame)[VAX_AP_REGNUM] = get_frame_base (frame) + 8;
- get_frame_saved_regs (frame)[PS_REGNUM] = get_frame_base (frame) + 4;
+ deprecated_get_frame_saved_regs (frame)[PC_REGNUM] = get_frame_base (frame) + 16;
+ deprecated_get_frame_saved_regs (frame)[DEPRECATED_FP_REGNUM] = get_frame_base (frame) + 12;
+ deprecated_get_frame_saved_regs (frame)[VAX_AP_REGNUM] = get_frame_base (frame) + 8;
+ deprecated_get_frame_saved_regs (frame)[PS_REGNUM] = get_frame_base (frame) + 4;
}
/* Get saved user PC for sigtramp from sigcontext for BSD style sigtramp. */
/* Get sigcontext address, it is the third parameter on the stack. */
if (get_next_frame (frame))
sigcontext_addr = read_memory_typed_address
- (FRAME_ARGS_ADDRESS (get_next_frame (frame))
+ (DEPRECATED_FRAME_ARGS_ADDRESS (get_next_frame (frame))
+ FRAME_ARGS_SKIP + sigcontext_offs,
builtin_type_void_data_ptr);
else
sigcontext_addr = read_memory_typed_address
(read_register (SP_REGNUM) + sigcontext_offs, builtin_type_void_data_ptr);
- /* Don't cause a memory_error when accessing sigcontext in case the stack
+ /* Offset to saved PC in sigcontext, from <sys/signal.h>. Don't
+ cause a memory_error when accessing sigcontext in case the stack
layout has changed or the stack is corrupt. */
- target_read_memory (sigcontext_addr + SIGCONTEXT_PC_OFFSET, buf, ptrbytes);
+ target_read_memory (sigcontext_addr + 12, buf, ptrbytes);
return extract_typed_address (buf, builtin_type_void_func_ptr);
}
return (read_memory_integer (get_frame_base (frame) + 16, 4));
}
-CORE_ADDR
-vax_frame_args_address_correct (struct frame_info *frame)
-{
- /* Cannot find the AP register value directly from the FP value. Must
- find it saved in the frame called by this one, or in the AP register
- for the innermost frame. However, there is no way to tell the
- difference between the innermost frame and a frame for which we
- just don't know the frame that it called (e.g. "info frame 0x7ffec789").
- For the sake of argument, suppose that the stack is somewhat trashed
- (which is one reason that "info frame" exists). So, return 0 (indicating
- we don't know the address of the arglist) if we don't know what frame
- this frame calls. */
- if (get_next_frame (frame))
- return (read_memory_integer (get_frame_base (get_next_frame (frame)) + 8, 4));
-
- return (0);
-}
-
static CORE_ADDR
vax_frame_args_address (struct frame_info *frame)
{
- /* In most of GDB, getting the args address is too important to
- just say "I don't know". This is sometimes wrong for functions
- that aren't on top of the stack, but c'est la vie. */
+ /* In most of GDB, getting the args address is too important to just
+ say "I don't know". This is sometimes wrong for functions that
+ aren't on top of the stack, but c'est la vie. */
if (get_next_frame (frame))
return (read_memory_integer (get_frame_base (get_next_frame (frame)) + 8, 4));
-
- return (read_register (VAX_AP_REGNUM));
-}
-
-static CORE_ADDR
-vax_frame_locals_address (struct frame_info *frame)
-{
- return (get_frame_base (frame));
+ /* Cannot find the AP register value directly from the FP value.
+ Must find it saved in the frame called by this one, or in the AP
+ register for the innermost frame. However, there is no way to
+ tell the difference between the innermost frame and a frame for
+ which we just don't know the frame that it called (e.g. "info
+ frame 0x7ffec789"). For the sake of argument, suppose that the
+ stack is somewhat trashed (which is one reason that "info frame"
+ exists). So, return 0 (indicating we don't know the address of
+ the arglist) if we don't know what frame this frame calls. */
+ return 0;
}
static int
vax_frame_num_args (struct frame_info *fi)
{
- return (0xff & read_memory_integer (FRAME_ARGS_ADDRESS (fi), 1));
+ return (0xff & read_memory_integer (DEPRECATED_FRAME_ARGS_ADDRESS (fi), 1));
}
static CORE_ADDR
{
/* In the case of the VAX, the frame's nominal address is the FP value,
and 12 bytes later comes the saved previous FP value as a 4-byte word. */
- if (inside_entry_file (get_frame_pc (frame)))
- return (0);
-
return (read_memory_integer (get_frame_base (frame) + 12, 4));
}
\f
for (regnum = 11; regnum >= 0; regnum--)
sp = push_word (sp, read_register (regnum));
sp = push_word (sp, read_register (PC_REGNUM));
- sp = push_word (sp, read_register (FP_REGNUM));
+ sp = push_word (sp, read_register (DEPRECATED_FP_REGNUM));
sp = push_word (sp, read_register (VAX_AP_REGNUM));
sp = push_word (sp, (read_register (PS_REGNUM) & 0xffef) + 0x2fff0000);
sp = push_word (sp, 0);
write_register (SP_REGNUM, sp);
- write_register (FP_REGNUM, sp);
+ write_register (DEPRECATED_FP_REGNUM, sp);
write_register (VAX_AP_REGNUM, sp + (17 * 4));
}
static void
vax_pop_frame (void)
{
- CORE_ADDR fp = read_register (FP_REGNUM);
+ CORE_ADDR fp = read_register (DEPRECATED_FP_REGNUM);
int regnum;
int regmask = read_memory_integer (fp + 4, 4);
(regmask & 0xffff)
| (read_register (PS_REGNUM) & 0xffff0000));
write_register (PC_REGNUM, read_memory_integer (fp + 16, 4));
- write_register (FP_REGNUM, read_memory_integer (fp + 12, 4));
+ write_register (DEPRECATED_FP_REGNUM, read_memory_integer (fp + 12, 4));
write_register (VAX_AP_REGNUM, read_memory_integer (fp + 8, 4));
fp += 16;
for (regnum = 0; regnum < 12; regnum++)
static void
vax_extract_return_value (struct type *valtype, char *regbuf, char *valbuf)
{
- memcpy (valbuf, regbuf + REGISTER_BYTE (0), TYPE_LENGTH (valtype));
+ memcpy (valbuf, regbuf + DEPRECATED_REGISTER_BYTE (0), TYPE_LENGTH (valtype));
}
static void
{
deprecated_write_register_bytes (0, valbuf, TYPE_LENGTH (valtype));
}
-
-static CORE_ADDR
-vax_extract_struct_value_address (char *regbuf)
-{
- return (extract_address (regbuf + REGISTER_BYTE (0), REGISTER_RAW_SIZE (0)));
-}
\f
static const unsigned char *
vax_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr)
static CORE_ADDR
vax_skip_prologue (CORE_ADDR pc)
{
- register int op = (unsigned char) read_memory_integer (pc, 1);
+ int op = (unsigned char) read_memory_integer (pc, 1);
if (op == 0x11)
pc += 2; /* skip brb */
if (op == 0x31)
return (DEPRECATED_FRAME_SAVED_PC(frame));
}
\f
-/* Print the vax instruction at address MEMADDR in debugged memory,
- from disassembler info INFO.
- Returns length of the instruction, in bytes. */
-
-static int
-vax_print_insn (CORE_ADDR memaddr, disassemble_info *info)
-{
- unsigned char buffer[MAXLEN];
- register int i;
- register unsigned char *p;
- const char *d;
-
- int status = (*info->read_memory_func) (memaddr, buffer, MAXLEN, info);
- if (status != 0)
- {
- (*info->memory_error_func) (status, memaddr, info);
- return -1;
- }
-
- for (i = 0; i < NOPCODES; i++)
- if (votstrs[i].detail.code == buffer[0]
- || votstrs[i].detail.code == *(unsigned short *) buffer)
- break;
-
- /* Handle undefined instructions. */
- if (i == NOPCODES)
- {
- (*info->fprintf_func) (info->stream, "0%o", buffer[0]);
- return 1;
- }
-
- (*info->fprintf_func) (info->stream, "%s", votstrs[i].name);
-
- /* Point at first byte of argument data,
- and at descriptor for first argument. */
- p = buffer + 1 + (votstrs[i].detail.code >= 0x100);
- d = votstrs[i].detail.args;
-
- if (*d)
- (*info->fprintf_func) (info->stream, " ");
-
- while (*d)
- {
- p = print_insn_arg (d, p, memaddr + (p - buffer), info);
- d += 2;
- if (*d)
- (*info->fprintf_func) (info->stream, ",");
- }
- return p - buffer;
-}
-\f
-static unsigned char *
-print_insn_arg (char *d, register char *p, CORE_ADDR addr,
- disassemble_info *info)
-{
- register int regnum = *p & 0xf;
- float floatlitbuf;
-
- if (*d == 'b')
- {
- if (d[1] == 'b')
- (*info->fprintf_func) (info->stream, "0x%x", addr + *p++ + 1);
- else
- {
- (*info->fprintf_func) (info->stream, "0x%x", addr + *(short *) p + 2);
- p += 2;
- }
- }
- else
- switch ((*p++ >> 4) & 0xf)
- {
- case 0:
- case 1:
- case 2:
- case 3: /* Literal mode */
- if (d[1] == 'd' || d[1] == 'f' || d[1] == 'g' || d[1] == 'h')
- {
- *(int *) &floatlitbuf = 0x4000 + ((p[-1] & 0x3f) << 4);
- (*info->fprintf_func) (info->stream, "$%f", floatlitbuf);
- }
- else
- (*info->fprintf_func) (info->stream, "$%d", p[-1] & 0x3f);
- break;
-
- case 4: /* Indexed */
- p = (char *) print_insn_arg (d, p, addr + 1, info);
- (*info->fprintf_func) (info->stream, "[%s]", REGISTER_NAME (regnum));
- break;
-
- case 5: /* Register */
- (*info->fprintf_func) (info->stream, REGISTER_NAME (regnum));
- break;
-
- case 7: /* Autodecrement */
- (*info->fprintf_func) (info->stream, "-");
- case 6: /* Register deferred */
- (*info->fprintf_func) (info->stream, "(%s)", REGISTER_NAME (regnum));
- break;
-
- case 9: /* Autoincrement deferred */
- (*info->fprintf_func) (info->stream, "@");
- if (regnum == PC_REGNUM)
- {
- (*info->fprintf_func) (info->stream, "#");
- info->target = *(long *) p;
- (*info->print_address_func) (info->target, info);
- p += 4;
- break;
- }
- case 8: /* Autoincrement */
- if (regnum == PC_REGNUM)
- {
- (*info->fprintf_func) (info->stream, "#");
- switch (d[1])
- {
- case 'b':
- (*info->fprintf_func) (info->stream, "%d", *p++);
- break;
-
- case 'w':
- (*info->fprintf_func) (info->stream, "%d", *(short *) p);
- p += 2;
- break;
-
- case 'l':
- (*info->fprintf_func) (info->stream, "%d", *(long *) p);
- p += 4;
- break;
-
- case 'q':
- (*info->fprintf_func) (info->stream, "0x%x%08x",
- ((long *) p)[1], ((long *) p)[0]);
- p += 8;
- break;
-
- case 'o':
- (*info->fprintf_func) (info->stream, "0x%x%08x%08x%08x",
- ((long *) p)[3], ((long *) p)[2],
- ((long *) p)[1], ((long *) p)[0]);
- p += 16;
- break;
-
- case 'f':
- if (INVALID_FLOAT (p, 4))
- (*info->fprintf_func) (info->stream,
- "<<invalid float 0x%x>>",
- *(int *) p);
- else
- (*info->fprintf_func) (info->stream, "%f", *(float *) p);
- p += 4;
- break;
-
- case 'd':
- if (INVALID_FLOAT (p, 8))
- (*info->fprintf_func) (info->stream,
- "<<invalid float 0x%x%08x>>",
- ((long *) p)[1], ((long *) p)[0]);
- else
- (*info->fprintf_func) (info->stream, "%f", *(double *) p);
- p += 8;
- break;
-
- case 'g':
- (*info->fprintf_func) (info->stream, "g-float");
- p += 8;
- break;
-
- case 'h':
- (*info->fprintf_func) (info->stream, "h-float");
- p += 16;
- break;
-
- }
- }
- else
- (*info->fprintf_func) (info->stream, "(%s)+", REGISTER_NAME (regnum));
- break;
-
- case 11: /* Byte displacement deferred */
- (*info->fprintf_func) (info->stream, "@");
- case 10: /* Byte displacement */
- if (regnum == PC_REGNUM)
- {
- info->target = addr + *p + 2;
- (*info->print_address_func) (info->target, info);
- }
- else
- (*info->fprintf_func) (info->stream, "%d(%s)", *p, REGISTER_NAME (regnum));
- p += 1;
- break;
-
- case 13: /* Word displacement deferred */
- (*info->fprintf_func) (info->stream, "@");
- case 12: /* Word displacement */
- if (regnum == PC_REGNUM)
- {
- info->target = addr + *(short *) p + 3;
- (*info->print_address_func) (info->target, info);
- }
- else
- (*info->fprintf_func) (info->stream, "%d(%s)",
- *(short *) p, REGISTER_NAME (regnum));
- p += 2;
- break;
-
- case 15: /* Long displacement deferred */
- (*info->fprintf_func) (info->stream, "@");
- case 14: /* Long displacement */
- if (regnum == PC_REGNUM)
- {
- info->target = addr + *(short *) p + 5;
- (*info->print_address_func) (info->target, info);
- }
- else
- (*info->fprintf_func) (info->stream, "%d(%s)",
- *(long *) p, REGISTER_NAME (regnum));
- p += 4;
- }
-
- return (unsigned char *) p;
-}
-\f
/* Initialize the current architecture based on INFO. If possible, re-use an
architecture from ARCHES, which is a list of architectures already created
during this debugging session.
/* NOTE: cagney/2002-12-06: This can be deleted when this arch is
ready to unwind the PC first (see frame.c:get_prev_frame()). */
- set_gdbarch_deprecated_init_frame_pc (gdbarch, init_frame_pc_default);
+ set_gdbarch_deprecated_init_frame_pc (gdbarch, deprecated_init_frame_pc_default);
/* Register info */
set_gdbarch_num_regs (gdbarch, VAX_NUM_REGS);
set_gdbarch_sp_regnum (gdbarch, VAX_SP_REGNUM);
- set_gdbarch_fp_regnum (gdbarch, VAX_FP_REGNUM);
+ set_gdbarch_deprecated_fp_regnum (gdbarch, VAX_FP_REGNUM);
set_gdbarch_pc_regnum (gdbarch, VAX_PC_REGNUM);
set_gdbarch_ps_regnum (gdbarch, VAX_PS_REGNUM);
set_gdbarch_register_name (gdbarch, vax_register_name);
- set_gdbarch_register_size (gdbarch, VAX_REGISTER_SIZE);
- set_gdbarch_register_bytes (gdbarch, VAX_REGISTER_BYTES);
- set_gdbarch_register_byte (gdbarch, vax_register_byte);
- set_gdbarch_register_raw_size (gdbarch, vax_register_raw_size);
+ set_gdbarch_deprecated_register_size (gdbarch, VAX_REGISTER_SIZE);
+ set_gdbarch_deprecated_register_bytes (gdbarch, VAX_REGISTER_BYTES);
+ set_gdbarch_deprecated_register_byte (gdbarch, vax_register_byte);
+ set_gdbarch_deprecated_register_raw_size (gdbarch, vax_register_raw_size);
set_gdbarch_deprecated_max_register_raw_size (gdbarch, VAX_MAX_REGISTER_RAW_SIZE);
- set_gdbarch_register_virtual_size (gdbarch, vax_register_virtual_size);
+ set_gdbarch_deprecated_register_virtual_size (gdbarch, vax_register_virtual_size);
set_gdbarch_deprecated_max_register_virtual_size (gdbarch,
VAX_MAX_REGISTER_VIRTUAL_SIZE);
- set_gdbarch_register_virtual_type (gdbarch, vax_register_virtual_type);
+ set_gdbarch_deprecated_register_virtual_type (gdbarch, vax_register_virtual_type);
/* Frame and stack info */
set_gdbarch_skip_prologue (gdbarch, vax_skip_prologue);
set_gdbarch_deprecated_saved_pc_after_call (gdbarch, vax_saved_pc_after_call);
set_gdbarch_frame_num_args (gdbarch, vax_frame_num_args);
- set_gdbarch_frameless_function_invocation (gdbarch,
- generic_frameless_function_invocation_not);
set_gdbarch_deprecated_frame_chain (gdbarch, vax_frame_chain);
set_gdbarch_deprecated_frame_saved_pc (gdbarch, vax_frame_saved_pc);
- set_gdbarch_frame_args_address (gdbarch, vax_frame_args_address);
- set_gdbarch_frame_locals_address (gdbarch, vax_frame_locals_address);
+ set_gdbarch_deprecated_frame_args_address (gdbarch, vax_frame_args_address);
set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, vax_frame_init_saved_regs);
set_gdbarch_deprecated_store_struct_return (gdbarch, vax_store_struct_return);
set_gdbarch_deprecated_extract_return_value (gdbarch, vax_extract_return_value);
set_gdbarch_deprecated_store_return_value (gdbarch, vax_store_return_value);
- set_gdbarch_deprecated_extract_struct_value_address (gdbarch, vax_extract_struct_value_address);
/* Call dummy info */
set_gdbarch_deprecated_push_dummy_frame (gdbarch, vax_push_dummy_frame);
set_gdbarch_deprecated_pop_frame (gdbarch, vax_pop_frame);
set_gdbarch_call_dummy_location (gdbarch, ON_STACK);
- set_gdbarch_call_dummy_words (gdbarch, vax_call_dummy_words);
- set_gdbarch_sizeof_call_dummy_words (gdbarch, sizeof_vax_call_dummy_words);
- set_gdbarch_fix_call_dummy (gdbarch, vax_fix_call_dummy);
- set_gdbarch_call_dummy_breakpoint_offset (gdbarch, 7);
+ set_gdbarch_deprecated_call_dummy_words (gdbarch, vax_call_dummy_words);
+ set_gdbarch_deprecated_sizeof_call_dummy_words (gdbarch, sizeof_vax_call_dummy_words);
+ set_gdbarch_deprecated_fix_call_dummy (gdbarch, vax_fix_call_dummy);
+ set_gdbarch_deprecated_call_dummy_breakpoint_offset (gdbarch, 7);
set_gdbarch_deprecated_use_generic_dummy_frames (gdbarch, 0);
set_gdbarch_deprecated_pc_in_call_dummy (gdbarch, deprecated_pc_in_call_dummy_on_stack);
/* Breakpoint info */
set_gdbarch_breakpoint_from_pc (gdbarch, vax_breakpoint_from_pc);
- set_gdbarch_decr_pc_after_break (gdbarch, 0);
/* Misc info */
set_gdbarch_function_start_offset (gdbarch, 2);
set_gdbarch_believe_pcc_promotion (gdbarch, 1);
/* Should be using push_dummy_call. */
- set_gdbarch_deprecated_dummy_write_sp (gdbarch, generic_target_write_sp);
+ set_gdbarch_deprecated_dummy_write_sp (gdbarch, deprecated_write_sp);
/* Hook in ABI-specific overrides, if they have been registered. */
gdbarch_init_osabi (info, gdbarch);
+ set_gdbarch_print_insn (gdbarch, print_insn_vax);
+
return (gdbarch);
}
+extern initialize_file_ftype _initialize_vax_tdep; /* -Wmissing-prototypes */
+
void
_initialize_vax_tdep (void)
{
gdbarch_register (bfd_arch_vax, vax_gdbarch_init, NULL);
-
- deprecated_tm_print_insn = vax_print_insn;
}
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