/* Native support for the SGI Iris running IRIX version 5, for GDB.
- Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1998,
- 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
+
+ Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1998,
+ 1999, 2000, 2001, 2002, 2004, 2006, 2007, 2008, 2009
+ Free Software Foundation, Inc.
+
Contributed by Alessandro Forin(af@cs.cmu.edu) at CMU
and by Per Bothner(bothner@cs.wisc.edu) at U.Wisconsin.
Implemented for Irix 4.x by Garrett A. Wollman.
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
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
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. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "inferior.h"
/* Prototypes for supply_gregset etc. */
#include "gregset.h"
+#include "mips-tdep.h"
-static void fetch_core_registers (char *, unsigned int, int, CORE_ADDR);
-
-/* Size of elements in jmpbuf */
+static void fetch_core_registers (struct regcache *, char *,
+ unsigned int, int, CORE_ADDR);
-#define JB_ELEMENT_SIZE 4
/*
* See the comment in m68k-tdep.c regarding the utility of these functions.
*/
void
-supply_gregset (gregset_t *gregsetp)
+supply_gregset (struct regcache *regcache, const gregset_t *gregsetp)
{
- register int regi;
- register greg_t *regp = &(*gregsetp)[0];
- int gregoff = sizeof (greg_t) - MIPS_REGSIZE;
+ int regi;
+ const greg_t *regp = &(*gregsetp)[0];
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ int gregoff = sizeof (greg_t) - mips_isa_regsize (gdbarch);
static char zerobuf[32] = {0};
for (regi = 0; regi <= CTX_RA; regi++)
- supply_register (regi, (char *) (regp + regi) + gregoff);
-
- supply_register (PC_REGNUM, (char *) (regp + CTX_EPC) + gregoff);
- supply_register (HI_REGNUM, (char *) (regp + CTX_MDHI) + gregoff);
- supply_register (LO_REGNUM, (char *) (regp + CTX_MDLO) + gregoff);
- supply_register (CAUSE_REGNUM, (char *) (regp + CTX_CAUSE) + gregoff);
+ regcache_raw_supply (regcache, regi,
+ (const char *) (regp + regi) + gregoff);
+
+ regcache_raw_supply (regcache, mips_regnum (gdbarch)->pc,
+ (const char *) (regp + CTX_EPC) + gregoff);
+ regcache_raw_supply (regcache, mips_regnum (gdbarch)->hi,
+ (const char *) (regp + CTX_MDHI) + gregoff);
+ regcache_raw_supply (regcache, mips_regnum (gdbarch)->lo,
+ (const char *) (regp + CTX_MDLO) + gregoff);
+ regcache_raw_supply (regcache, mips_regnum (gdbarch)->cause,
+ (const char *) (regp + CTX_CAUSE) + gregoff);
/* Fill inaccessible registers with zero. */
- supply_register (BADVADDR_REGNUM, zerobuf);
+ regcache_raw_supply (regcache, mips_regnum (gdbarch)->badvaddr, zerobuf);
}
void
-fill_gregset (gregset_t *gregsetp, int regno)
+fill_gregset (const struct regcache *regcache, gregset_t *gregsetp, int regno)
{
- int regi;
- register greg_t *regp = &(*gregsetp)[0];
+ int regi, size;
+ greg_t *regp = &(*gregsetp)[0];
+ gdb_byte buf[MAX_REGISTER_SIZE];
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
/* Under Irix6, if GDB is built with N32 ABI and is debugging an O32
executable, we have to sign extend the registers to 64 bits before
for (regi = 0; regi <= CTX_RA; regi++)
if ((regno == -1) || (regno == regi))
- *(regp + regi) =
- extract_signed_integer (&deprecated_registers[REGISTER_BYTE (regi)],
- REGISTER_RAW_SIZE (regi));
-
- if ((regno == -1) || (regno == PC_REGNUM))
- *(regp + CTX_EPC) =
- extract_signed_integer (&deprecated_registers[REGISTER_BYTE (PC_REGNUM)],
- REGISTER_RAW_SIZE (PC_REGNUM));
-
- if ((regno == -1) || (regno == CAUSE_REGNUM))
- *(regp + CTX_CAUSE) =
- extract_signed_integer (&deprecated_registers[REGISTER_BYTE (CAUSE_REGNUM)],
- REGISTER_RAW_SIZE (CAUSE_REGNUM));
-
- if ((regno == -1) || (regno == HI_REGNUM))
- *(regp + CTX_MDHI) =
- extract_signed_integer (&deprecated_registers[REGISTER_BYTE (HI_REGNUM)],
- REGISTER_RAW_SIZE (HI_REGNUM));
-
- if ((regno == -1) || (regno == LO_REGNUM))
- *(regp + CTX_MDLO) =
- extract_signed_integer (&deprecated_registers[REGISTER_BYTE (LO_REGNUM)],
- REGISTER_RAW_SIZE (LO_REGNUM));
+ {
+ size = register_size (gdbarch, regi);
+ regcache_raw_collect (regcache, regi, buf);
+ *(regp + regi) = extract_signed_integer (buf, size);
+ }
+
+ if ((regno == -1) || (regno == gdbarch_pc_regnum (gdbarch)))
+ {
+ regi = mips_regnum (gdbarch)->pc;
+ size = register_size (gdbarch, regi);
+ regcache_raw_collect (regcache, regi, buf);
+ *(regp + CTX_EPC) = extract_signed_integer (buf, size);
+ }
+
+ if ((regno == -1) || (regno == mips_regnum (gdbarch)->cause))
+ {
+ regi = mips_regnum (gdbarch)->cause;
+ size = register_size (gdbarch, regi);
+ regcache_raw_collect (regcache, regi, buf);
+ *(regp + CTX_CAUSE) = extract_signed_integer (buf, size);
+ }
+
+ if ((regno == -1) || (regno == mips_regnum (gdbarch)->hi))
+ {
+ regi = mips_regnum (gdbarch)->hi;
+ size = register_size (gdbarch, regi);
+ regcache_raw_collect (regcache, regi, buf);
+ *(regp + CTX_MDHI) = extract_signed_integer (buf, size);
+ }
+
+ if ((regno == -1) || (regno == mips_regnum (gdbarch)->lo))
+ {
+ regi = mips_regnum (gdbarch)->lo;
+ size = register_size (gdbarch, regi);
+ regcache_raw_collect (regcache, regi, buf);
+ *(regp + CTX_MDLO) = extract_signed_integer (buf, size);
+ }
}
/*
* Now we do the same thing for floating-point registers.
- * We don't bother to condition on FP0_REGNUM since any
+ * We don't bother to condition on gdbarch_fp0_regnum since any
* reasonable MIPS configuration has an R3010 in it.
*
* Again, see the comments in m68k-tdep.c.
*/
void
-supply_fpregset (fpregset_t *fpregsetp)
+supply_fpregset (struct regcache *regcache, const fpregset_t *fpregsetp)
{
- register int regi;
+ int regi;
static char zerobuf[32] = {0};
+ char fsrbuf[8];
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
/* FIXME, this is wrong for the N32 ABI which has 64 bit FP regs. */
for (regi = 0; regi < 32; regi++)
- supply_register (FP0_REGNUM + regi,
- (char *) &fpregsetp->fp_r.fp_regs[regi]);
-
- supply_register (FCRCS_REGNUM, (char *) &fpregsetp->fp_csr);
-
- /* FIXME: how can we supply FCRIR_REGNUM? SGI doesn't tell us. */
- supply_register (FCRIR_REGNUM, zerobuf);
+ regcache_raw_supply (regcache, gdbarch_fp0_regnum (gdbarch) + regi,
+ (const char *) &fpregsetp->fp_r.fp_regs[regi]);
+
+ /* We can't supply the FSR register directly to the regcache,
+ because there is a size issue: On one hand, fpregsetp->fp_csr
+ is 32bits long, while the regcache expects a 64bits long value.
+ So we use a buffer of the correct size and copy into it the register
+ value at the proper location. */
+ memset (fsrbuf, 0, 4);
+ memcpy (fsrbuf + 4, &fpregsetp->fp_csr, 4);
+
+ regcache_raw_supply (regcache,
+ mips_regnum (gdbarch)->fp_control_status, fsrbuf);
+
+ /* FIXME: how can we supply FCRIR? SGI doesn't tell us. */
+ regcache_raw_supply (regcache,
+ mips_regnum (gdbarch)->fp_implementation_revision,
+ zerobuf);
}
void
-fill_fpregset (fpregset_t *fpregsetp, int regno)
+fill_fpregset (const struct regcache *regcache, fpregset_t *fpregsetp, int regno)
{
int regi;
char *from, *to;
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
/* FIXME, this is wrong for the N32 ABI which has 64 bit FP regs. */
- for (regi = FP0_REGNUM; regi < FP0_REGNUM + 32; regi++)
+ for (regi = gdbarch_fp0_regnum (gdbarch);
+ regi < gdbarch_fp0_regnum (gdbarch) + 32; regi++)
{
if ((regno == -1) || (regno == regi))
{
- from = (char *) &deprecated_registers[REGISTER_BYTE (regi)];
- to = (char *) &(fpregsetp->fp_r.fp_regs[regi - FP0_REGNUM]);
- memcpy (to, from, REGISTER_RAW_SIZE (regi));
+ to = (char *) &(fpregsetp->fp_r.fp_regs[regi - gdbarch_fp0_regnum
+ (gdbarch)]);
+ regcache_raw_collect (regcache, regi, to);
}
}
- if ((regno == -1) || (regno == FCRCS_REGNUM))
- fpregsetp->fp_csr = *(unsigned *) &deprecated_registers[REGISTER_BYTE (FCRCS_REGNUM)];
-}
-
-
-/* Figure out where the longjmp will land.
- We expect the first arg to be a pointer to the jmp_buf structure from which
- we extract the pc (JB_PC) that we will land at. The pc is copied into PC.
- This routine returns true on success. */
-
-int
-get_longjmp_target (CORE_ADDR *pc)
-{
- char *buf;
- CORE_ADDR jb_addr;
-
- buf = alloca (TARGET_PTR_BIT / TARGET_CHAR_BIT);
- jb_addr = read_register (A0_REGNUM);
-
- if (target_read_memory (jb_addr + JB_PC * JB_ELEMENT_SIZE, buf,
- TARGET_PTR_BIT / TARGET_CHAR_BIT))
- return 0;
+ if (regno == -1
+ || regno == mips_regnum (gdbarch)->fp_control_status)
+ {
+ char fsrbuf[8];
- *pc = extract_address (buf, TARGET_PTR_BIT / TARGET_CHAR_BIT);
+ /* We can't fill the FSR register directly from the regcache,
+ because there is a size issue: On one hand, fpregsetp->fp_csr
+ is 32bits long, while the regcache expects a 64bits long buffer.
+ So we use a buffer of the correct size and copy the register
+ value from that buffer. */
+ regcache_raw_collect (regcache,
+ mips_regnum (gdbarch)->fp_control_status, fsrbuf);
- return 1;
+ memcpy (&fpregsetp->fp_csr, fsrbuf + 4, 4);
+ }
}
+
/* Provide registers to GDB from a core file.
CORE_REG_SECT points to an array of bytes, which were obtained from
REG_ADDR is also unused. */
static void
-fetch_core_registers (char *core_reg_sect, unsigned core_reg_size,
+fetch_core_registers (struct regcache *regcache,
+ char *core_reg_sect, unsigned core_reg_size,
int which, CORE_ADDR reg_addr)
{
- if (core_reg_size == DEPRECATED_REGISTER_BYTES)
+ char *srcp = core_reg_sect;
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ int regsize = mips_isa_regsize (gdbarch);
+ int regno;
+
+ /* If regsize is 8, this is a N32 or N64 core file.
+ If regsize is 4, this is an O32 core file. */
+ if (core_reg_size != regsize * gdbarch_num_regs (gdbarch))
{
- memcpy ((char *) deprecated_registers, core_reg_sect, core_reg_size);
+ warning (_("wrong size gregset struct in core file"));
+ return;
}
- else if (MIPS_REGSIZE == 4 &&
- core_reg_size == (2 * MIPS_REGSIZE) * NUM_REGS)
- {
- /* This is a core file from a N32 executable, 64 bits are saved
- for all registers. */
- char *srcp = core_reg_sect;
- char *dstp = deprecated_registers;
- int regno;
- for (regno = 0; regno < NUM_REGS; regno++)
- {
- if (regno >= FP0_REGNUM && regno < (FP0_REGNUM + 32))
- {
- /* FIXME, this is wrong, N32 has 64 bit FP regs, but GDB
- currently assumes that they are 32 bit. */
- *dstp++ = *srcp++;
- *dstp++ = *srcp++;
- *dstp++ = *srcp++;
- *dstp++ = *srcp++;
- if (REGISTER_RAW_SIZE (regno) == 4)
- {
- /* copying 4 bytes from eight bytes?
- I don't see how this can be right... */
- srcp += 4;
- }
- else
- {
- /* copy all 8 bytes (sizeof(double)) */
- *dstp++ = *srcp++;
- *dstp++ = *srcp++;
- *dstp++ = *srcp++;
- *dstp++ = *srcp++;
- }
- }
- else
- {
- srcp += 4;
- *dstp++ = *srcp++;
- *dstp++ = *srcp++;
- *dstp++ = *srcp++;
- *dstp++ = *srcp++;
- }
- }
- }
- else
+ for (regno = 0; regno < gdbarch_num_regs (gdbarch); regno++)
{
- warning ("wrong size gregset struct in core file");
- return;
+ regcache_raw_supply (regcache, regno, srcp);
+ srcp += regsize;
}
-
- deprecated_registers_fetched ();
}
/* Register that we are able to handle irix5 core file formats.
void
_initialize_core_irix5 (void)
{
- add_core_fns (&irix5_core_fns);
+ deprecated_add_core_fns (&irix5_core_fns);
}
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