/* Target-dependent code for the SPARC for GDB, the GNU debugger.
- Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995
+ Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995, 1996
Free Software Foundation, Inc.
This file is part of GDB.
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* ??? Support for calling functions from gdb in sparc64 is unfinished. */
#include "obstack.h"
#include "target.h"
#include "value.h"
+#include "bfd.h"
#ifdef USE_PROC_FS
#include <sys/procfs.h>
#include "gdbcore.h"
#ifdef GDB_TARGET_IS_SPARC64
-#define NUM_SPARC_FPREGS 64
+#define FP_REGISTER_BYTES (64 * 4)
#else
-#define NUM_SPARC_FPREGS 32
+#define FP_REGISTER_BYTES (32 * 4)
+#endif
+
+/* If not defined, assume 32 bit sparc. */
+#ifndef FP_MAX_REGNUM
+#define FP_MAX_REGNUM (FP0_REGNUM + 32)
#endif
#define SPARC_INTREG_SIZE (REGISTER_RAW_SIZE (G0_REGNUM))
val = X_A (instruction) ? baa : ba;
else
val = X_A (instruction) ? bicca : bicc;
- switch (X_OP (instruction))
+ switch (X_OP2 (instruction))
{
case 2:
case 6:
*optimized = 0;
addr = 0;
+
+ /* FIXME This code extracted from infcmd.c; should put elsewhere! */
+ if (frame == NULL)
+ {
+ /* error ("No selected frame."); */
+ if (!target_has_registers)
+ error ("The program has no registers now.");
+ if (selected_frame == NULL)
+ error ("No selected frame.");
+ /* Try to use selected frame */
+ frame = get_prev_frame (selected_frame);
+ if (frame == 0)
+ error ("Cmd not meaningful in the outermost frame.");
+ }
+
+
frame1 = frame->next;
while (frame1 != NULL)
{
read_register (SP_REGNUM))
&& frame1->pc <= FRAME_FP (frame1))
{
- /* Dummy frame. All but the window regs are in there somewhere. */
- /* FIXME: The offsets are wrong for sparc64 (eg: 0xa0). */
+ /* Dummy frame. All but the window regs are in there somewhere.
+ The window registers are saved on the stack, just like in a
+ normal frame. */
if (regnum >= G1_REGNUM && regnum < G1_REGNUM + 7)
addr = frame1->frame + (regnum - G0_REGNUM) * SPARC_INTREG_SIZE
- - (NUM_SPARC_FPREGS * 4 + 8 * SPARC_INTREG_SIZE);
+ - (FP_REGISTER_BYTES + 8 * SPARC_INTREG_SIZE);
else if (regnum >= I0_REGNUM && regnum < I0_REGNUM + 8)
- addr = frame1->frame + (regnum - I0_REGNUM) * SPARC_INTREG_SIZE
- - (NUM_SPARC_FPREGS * 4 + 16 * SPARC_INTREG_SIZE);
- else if (regnum >= FP0_REGNUM && regnum < FP0_REGNUM + NUM_SPARC_FPREGS)
+ addr = (frame1->prev->bottom
+ + (regnum - I0_REGNUM) * SPARC_INTREG_SIZE
+ + FRAME_SAVED_I0);
+ else if (regnum >= L0_REGNUM && regnum < L0_REGNUM + 8)
+ addr = (frame1->prev->bottom
+ + (regnum - L0_REGNUM) * SPARC_INTREG_SIZE
+ + FRAME_SAVED_L0);
+ else if (regnum >= O0_REGNUM && regnum < O0_REGNUM + 8)
+ addr = frame1->frame + (regnum - O0_REGNUM) * SPARC_INTREG_SIZE
+ - (FP_REGISTER_BYTES + 16 * SPARC_INTREG_SIZE);
+#ifdef FP0_REGNUM
+ else if (regnum >= FP0_REGNUM && regnum < FP0_REGNUM + 32)
addr = frame1->frame + (regnum - FP0_REGNUM) * 4
- - (NUM_SPARC_FPREGS * 4);
+ - (FP_REGISTER_BYTES);
+#ifdef GDB_TARGET_IS_SPARC64
+ else if (regnum >= FP0_REGNUM + 32 && regnum < FP_MAX_REGNUM)
+ addr = frame1->frame + 32 * 4 + (regnum - FP0_REGNUM - 32) * 8
+ - (FP_REGISTER_BYTES);
+#endif
+#endif /* FP0_REGNUM */
else if (regnum >= Y_REGNUM && regnum < NUM_REGS)
addr = frame1->frame + (regnum - Y_REGNUM) * SPARC_INTREG_SIZE
- - (NUM_SPARC_FPREGS * 4 + 24 * SPARC_INTREG_SIZE);
+ - (FP_REGISTER_BYTES + 24 * SPARC_INTREG_SIZE);
}
else if (frame1->flat)
{
#endif
/* See tm-sparc.h for how this is calculated. */
+#ifdef FP0_REGNUM
#define DUMMY_STACK_REG_BUF_SIZE \
(((8+8+8) * SPARC_INTREG_SIZE) + (32 * REGISTER_RAW_SIZE (FP0_REGNUM)))
+#else
+#define DUMMY_STACK_REG_BUF_SIZE \
+(((8+8+8) * SPARC_INTREG_SIZE) )
+#endif /* FP0_REGNUM */
#define DUMMY_STACK_SIZE (DUMMY_STACK_REG_BUF_SIZE + DUMMY_REG_SAVE_OFFSET)
void
®ister_temp[16 * SPARC_INTREG_SIZE],
SPARC_INTREG_SIZE * 8);
- /* ??? The 32 here should be NUM_SPARC_FPREGS, but until we decide what
- REGISTER_RAW_SIZE should be for fp regs, it's left as is. */
+#ifdef FP0_REGNUM
read_register_bytes (REGISTER_BYTE (FP0_REGNUM),
®ister_temp[24 * SPARC_INTREG_SIZE],
- REGISTER_RAW_SIZE (FP0_REGNUM) * 32);
+ FP_REGISTER_BYTES);
+#endif /* FP0_REGNUM */
sp -= DUMMY_STACK_SIZE;
for (regnum = G1_REGNUM; regnum < G1_REGNUM+7; regnum++)
saved_regs_addr->regs[regnum] =
frame_addr + (regnum - G0_REGNUM) * SPARC_INTREG_SIZE
- - (NUM_SPARC_FPREGS * 4 + 8 * SPARC_INTREG_SIZE);
+ - (FP_REGISTER_BYTES + 8 * SPARC_INTREG_SIZE);
for (regnum = I0_REGNUM; regnum < I0_REGNUM+8; regnum++)
saved_regs_addr->regs[regnum] =
frame_addr + (regnum - I0_REGNUM) * SPARC_INTREG_SIZE
- - (NUM_SPARC_FPREGS * 4 + 16 * SPARC_INTREG_SIZE);
+ - (FP_REGISTER_BYTES + 16 * SPARC_INTREG_SIZE);
+#ifdef FP0_REGNUM
for (regnum = FP0_REGNUM; regnum < FP0_REGNUM + 32; regnum++)
saved_regs_addr->regs[regnum] =
frame_addr + (regnum - FP0_REGNUM) * 4
- - (NUM_SPARC_FPREGS * 4);
+ - (FP_REGISTER_BYTES);
+#ifdef GDB_TARGET_IS_SPARC64
+ for (regnum = FP0_REGNUM + 32; regnum < FP_MAX_REGNUM; regnum++)
+ saved_regs_addr->regs[regnum] =
+ frame_addr + 32 * 4 + (regnum - FP0_REGNUM - 32) * 8
+ - (FP_REGISTER_BYTES);
+#endif
+#endif /* FP0_REGNUM */
for (regnum = Y_REGNUM; regnum < NUM_REGS; regnum++)
saved_regs_addr->regs[regnum] =
frame_addr + (regnum - Y_REGNUM) * SPARC_INTREG_SIZE - 0xe0;
- - (NUM_SPARC_FPREGS * 4 + 24 * SPARC_INTREG_SIZE);
+ - (FP_REGISTER_BYTES + 24 * SPARC_INTREG_SIZE);
frame_addr = fi->bottom ?
fi->bottom : read_register (SP_REGNUM);
}
int regnum;
sparc_frame_find_saved_regs (frame, &fsr);
+#ifdef FP0_REGNUM
if (fsr.regs[FP0_REGNUM])
{
- read_memory (fsr.regs[FP0_REGNUM], raw_buffer, NUM_SPARC_FPREGS * 4);
+ read_memory (fsr.regs[FP0_REGNUM], raw_buffer, FP_REGISTER_BYTES);
write_register_bytes (REGISTER_BYTE (FP0_REGNUM),
- raw_buffer, NUM_SPARC_FPREGS * 4);
+ raw_buffer, FP_REGISTER_BYTES);
}
#ifndef GDB_TARGET_IS_SPARC64
if (fsr.regs[FPS_REGNUM])
write_register_bytes (REGISTER_BYTE (CPS_REGNUM), raw_buffer, 4);
}
#endif
+#endif /* FP0_REGNUM */
if (fsr.regs[G1_REGNUM])
{
read_memory (fsr.regs[G1_REGNUM], raw_buffer, 7 * SPARC_INTREG_SIZE);
err = target_read_memory (pc + 8, buf, sizeof(long));
insn = extract_unsigned_integer (buf, 4);
- if ((err == 0) && (insn & 0xfffffe00) == 0)
+ if ((err == 0) && (insn & 0xffc00000) == 0)
return pc+12;
else
return pc+8;
{
register int regi;
register prgreg_t *regp = (prgreg_t *) gregsetp;
+ static char zerobuf[MAX_REGISTER_RAW_SIZE] = {0};
/* GDB register numbers for Gn, On, Ln, In all match /proc reg numbers. */
for (regi = G0_REGNUM ; regi <= I7_REGNUM ; regi++)
supply_register (PC_REGNUM, (char *) (regp + R_PC));
supply_register (NPC_REGNUM,(char *) (regp + R_nPC));
supply_register (Y_REGNUM, (char *) (regp + R_Y));
+
+ /* Fill inaccessible registers with zero. */
+ supply_register (WIM_REGNUM, zerobuf);
+ supply_register (TBR_REGNUM, zerobuf);
+ supply_register (CPS_REGNUM, zerobuf);
}
void
register int regi;
char *from;
- for (regi = FP0_REGNUM ; regi < FP0_REGNUM+32 ; regi++)
+ for (regi = FP0_REGNUM ; regi < FP_MAX_REGNUM ; regi++)
{
from = (char *) &fpregsetp->pr_fr.pr_regs[regi-FP0_REGNUM];
supply_register (regi, from);
char *to;
char *from;
- /* ??? The 32 should probably be NUM_SPARC_FPREGS, but again we're
- waiting on what REGISTER_RAW_SIZE should be for fp regs. */
- for (regi = FP0_REGNUM ; regi < FP0_REGNUM + 32 ; regi++)
+ for (regi = FP0_REGNUM ; regi < FP_MAX_REGNUM ; regi++)
{
if ((regno == -1) || (regno == regi))
{
{
unsigned LONGEST val;
- if (((unsigned) (regno) - FP0_REGNUM < FP_MAX_REGNUM - FP0_REGNUM)
- && ((regno) & 1) == 0)
+ /* Handle double/quad versions of lower 32 fp regs. */
+ if (regno >= FP0_REGNUM && regno < FP0_REGNUM + 32
+ && (regno & 1) == 0)
+ {
+ char value[16];
+
+ if (!read_relative_register_raw_bytes (regno, value)
+ && !read_relative_register_raw_bytes (regno + 1, value + 4))
+ {
+ printf_unfiltered ("\t");
+ print_floating (value, builtin_type_double, gdb_stdout);
+ }
+#if 0 /* FIXME: gdb doesn't handle long doubles */
+ if ((regno & 3) == 0)
+ {
+ if (!read_relative_register_raw_bytes (regno + 2, value + 8)
+ && !read_relative_register_raw_bytes (regno + 3, value + 12))
+ {
+ printf_unfiltered ("\t");
+ print_floating (value, builtin_type_long_double, gdb_stdout);
+ }
+ }
+#endif
+ return;
+ }
+
+#if 0 /* FIXME: gdb doesn't handle long doubles */
+ /* Print upper fp regs as long double if appropriate. */
+ if (regno >= FP0_REGNUM + 32 && regno < FP_MAX_REGNUM
+ /* We test for even numbered regs and not a multiple of 4 because
+ the upper fp regs are recorded as doubles. */
+ && (regno & 1) == 0)
{
- char doublereg[8]; /* two float regs */
- if (!read_relative_register_raw_bytes ((regno), doublereg))
+ char value[16];
+
+ if (!read_relative_register_raw_bytes (regno, value)
+ && !read_relative_register_raw_bytes (regno + 1, value + 8))
{
- printf_unfiltered("\t");
- print_floating (doublereg, builtin_type_double, gdb_stdout);
+ printf_unfiltered ("\t");
+ print_floating (value, builtin_type_long_double, gdb_stdout);
}
return;
}
+#endif
/* FIXME: Some of these are priviledged registers.
Not sure how they should be handled. */
_initialize_sparc_tdep ()
{
tm_print_insn = print_insn_sparc;
+ tm_print_insn_info.mach = TM_PRINT_INSN_MACH; /* Selects sparc/sparclite */
}
projects / binutils.git / blobdiff