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-rw-r--r--gdb/i386v4-nat.c163
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diff --git a/gdb/i386v4-nat.c b/gdb/i386v4-nat.c
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--- a/gdb/i386v4-nat.c
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-/* Native-dependent code for Unix SVR4 running on i386's.
-
- Copyright (C) 1988-2016 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 3 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, see <http://www.gnu.org/licenses/>. */
-
-#include "defs.h"
-#include "value.h"
-#include "inferior.h"
-#include "regcache.h"
-
-#ifdef HAVE_SYS_REG_H
-#include <sys/reg.h>
-#endif
-
-#include "i386-tdep.h"
-#include "i387-tdep.h"
-
-#ifdef HAVE_SYS_PROCFS_H
-
-#include <sys/procfs.h>
-
-/* We must not compile this code for 64-bit Solaris x86. */
-#if !defined (PR_MODEL_NATIVE) || (PR_MODEL_NATIVE == PR_MODEL_ILP32)
-
-#include "gregset.h"
-
-/* The `/proc' interface divides the target machine's register set up
- into two different sets, the general purpose register set (gregset)
- and the floating-point register set (fpregset). For each set,
- there is an ioctl to get the current register set and another ioctl
- to set the current values.
-
- The actual structure passed through the ioctl interface is, of
- course, naturally machine dependent, and is different for each set
- of registers. For the i386 for example, the general-purpose
- register set is typically defined by:
-
- typedef int gregset_t[19]; (in <sys/regset.h>)
-
- #define GS 0 (in <sys/reg.h>)
- #define FS 1
- ...
- #define UESP 17
- #define SS 18
-
- and the floating-point set by:
-
- typedef struct fpregset {
- union {
- struct fpchip_state // fp extension state //
- {
- int state[27]; // 287/387 saved state //
- int status; // status word saved at //
- // exception //
- } fpchip_state;
- struct fp_emul_space // for emulators //
- {
- char fp_emul[246];
- char fp_epad[2];
- } fp_emul_space;
- int f_fpregs[62]; // union of the above //
- } fp_reg_set;
- long f_wregs[33]; // saved weitek state //
- } fpregset_t;
-
- Incidentally fpchip_state contains the FPU state in the same format
- as used by the "fsave" instruction, and that's the only thing we
- support here. I don't know how the emulator stores it state. The
- Weitek stuff definitely isn't supported.
-
- The routines defined here, provide the packing and unpacking of
- gregset_t and fpregset_t formatted data. */
-
-#ifdef HAVE_GREGSET_T
-
-/* Mapping between the general-purpose registers in `/proc'
- format and GDB's register array layout. */
-static int regmap[] =
-{
- EAX, ECX, EDX, EBX,
- UESP, EBP, ESI, EDI,
- EIP, EFL, CS, SS,
- DS, ES, FS, GS
-};
-
-/* Fill GDB's register array with the general-purpose register values
- in *GREGSETP. */
-
-void
-supply_gregset (struct regcache *regcache, const gregset_t *gregsetp)
-{
- const greg_t *regp = (const greg_t *) gregsetp;
- int regnum;
-
- for (regnum = 0; regnum < I386_NUM_GREGS; regnum++)
- regcache_raw_supply (regcache, regnum, regp + regmap[regnum]);
-}
-
-/* Fill register REGNUM (if it is a general-purpose register) in
- *GREGSETPS with the value in GDB's register array. If REGNUM is -1,
- do this for all registers. */
-
-void
-fill_gregset (const struct regcache *regcache,
- gregset_t *gregsetp, int regnum)
-{
- greg_t *regp = (greg_t *) gregsetp;
- int i;
-
- for (i = 0; i < I386_NUM_GREGS; i++)
- if (regnum == -1 || regnum == i)
- regcache_raw_collect (regcache, i, regp + regmap[i]);
-}
-
-#endif /* HAVE_GREGSET_T */
-
-#ifdef HAVE_FPREGSET_T
-
-/* Fill GDB's register array with the floating-point register values in
- *FPREGSETP. */
-
-void
-supply_fpregset (struct regcache *regcache, const fpregset_t *fpregsetp)
-{
- if (gdbarch_fp0_regnum (get_regcache_arch (regcache)) == 0)
- return;
-
- i387_supply_fsave (regcache, -1, fpregsetp);
-}
-
-/* Fill register REGNO (if it is a floating-point register) in
- *FPREGSETP with the value in GDB's register array. If REGNO is -1,
- do this for all registers. */
-
-void
-fill_fpregset (const struct regcache *regcache,
- fpregset_t *fpregsetp, int regno)
-{
- if (gdbarch_fp0_regnum (get_regcache_arch (regcache)) == 0)
- return;
-
- i387_collect_fsave (regcache, regno, fpregsetp);
-}
-
-#endif /* HAVE_FPREGSET_T */
-
-#endif /* not 64-bit. */
-
-#endif /* HAVE_SYS_PROCFS_H */