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- /* Native-dependent code for Solaris x86.
- Copyright (C) 1988-2022 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 "regcache.h"
- #include <sys/reg.h>
- #include <sys/procfs.h>
- #include "gregset.h"
- #include "target.h"
- #include "procfs.h"
- /* This file provids the (temporary) glue between the Solaris x86
- target dependent code and the machine independent SVR4 /proc
- support. */
- /* Solaris 10 (Solaris 2.10, SunOS 5.10) and up support two process
- data models, the traditional 32-bit data model (ILP32) and the
- 64-bit data model (LP64). The format of /proc depends on the data
- model of the observer (the controlling process, GDB in our case).
- The Solaris header files conveniently define PR_MODEL_NATIVE to the
- data model of the controlling process. If its value is
- PR_MODEL_LP64, we know that GDB is being compiled as a 64-bit
- program.
- Note that a 32-bit GDB won't be able to debug a 64-bit target
- process using /proc on Solaris. */
- #if PR_MODEL_NATIVE == PR_MODEL_LP64
- #include "amd64-nat.h"
- #include "amd64-tdep.h"
- /* Mapping between the general-purpose registers in gregset_t format
- and GDB's register cache layout. */
- /* From <sys/regset.h>. */
- static int amd64_sol2_gregset64_reg_offset[] = {
- 14 * 8, /* %rax */
- 11 * 8, /* %rbx */
- 13 * 8, /* %rcx */
- 12 * 8, /* %rdx */
- 9 * 8, /* %rsi */
- 8 * 8, /* %rdi */
- 10 * 8, /* %rbp */
- 20 * 8, /* %rsp */
- 7 * 8, /* %r8 ... */
- 6 * 8,
- 5 * 8,
- 4 * 8,
- 3 * 8,
- 2 * 8,
- 1 * 8,
- 0 * 8, /* ... %r15 */
- 17 * 8, /* %rip */
- 19 * 8, /* %eflags */
- 18 * 8, /* %cs */
- 21 * 8, /* %ss */
- 25 * 8, /* %ds */
- 24 * 8, /* %es */
- 22 * 8, /* %fs */
- 23 * 8 /* %gs */
- };
- /* 32-bit registers are provided by Solaris in 64-bit format, so just
- give a subset of the list above. */
- static int amd64_sol2_gregset32_reg_offset[] = {
- 14 * 8, /* %eax */
- 13 * 8, /* %ecx */
- 12 * 8, /* %edx */
- 11 * 8, /* %ebx */
- 20 * 8, /* %esp */
- 10 * 8, /* %ebp */
- 9 * 8, /* %esi */
- 8 * 8, /* %edi */
- 17 * 8, /* %eip */
- 19 * 8, /* %eflags */
- 18 * 8, /* %cs */
- 21 * 8, /* %ss */
- 25 * 8, /* %ds */
- 24 * 8, /* %es */
- 22 * 8, /* %fs */
- 23 * 8 /* %gs */
- };
- void
- supply_gregset (struct regcache *regcache, const prgregset_t *gregs)
- {
- amd64_supply_native_gregset (regcache, gregs, -1);
- }
- void
- supply_fpregset (struct regcache *regcache, const prfpregset_t *fpregs)
- {
- amd64_supply_fxsave (regcache, -1, fpregs);
- }
- void
- fill_gregset (const struct regcache *regcache,
- prgregset_t *gregs, int regnum)
- {
- amd64_collect_native_gregset (regcache, gregs, regnum);
- }
- void
- fill_fpregset (const struct regcache *regcache,
- prfpregset_t *fpregs, int regnum)
- {
- amd64_collect_fxsave (regcache, regnum, fpregs);
- }
- #else /* PR_MODEL_NATIVE != PR_MODEL_LP64 */
- #include "i386-tdep.h"
- #include "i387-tdep.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).
- The actual structure 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. */
- /* Mapping between the general-purpose registers in `/proc'
- format and GDB's register array layout. */
- static int regmap[] =
- {
- 11 /* EAX */,
- 10 /* ECX */,
- 9 /* EDX */,
- 8 /* EBX */,
- 17 /* UESP */,
- 6 /* EBP */,
- 5 /* ESI */,
- 4 /* EDI */,
- 14 /* EIP */,
- 16 /* EFL */,
- 15 /* CS */,
- 18 /* SS */,
- 3 /* DS */,
- 2 /* ES */,
- 1 /* FS */,
- 0 /* 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 (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 (i, regp + regmap[i]);
- }
- /* 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 (regcache->arch ()) == 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 (regcache->arch ()) == 0)
- return;
- i387_collect_fsave (regcache, regno, fpregsetp);
- }
- #endif
- void _initialize_amd64_sol2_nat ();
- void
- _initialize_amd64_sol2_nat ()
- {
- #if PR_MODEL_NATIVE == PR_MODEL_LP64
- amd64_native_gregset32_reg_offset = amd64_sol2_gregset32_reg_offset;
- amd64_native_gregset32_num_regs =
- ARRAY_SIZE (amd64_sol2_gregset32_reg_offset);
- amd64_native_gregset64_reg_offset = amd64_sol2_gregset64_reg_offset;
- amd64_native_gregset64_num_regs =
- ARRAY_SIZE (amd64_sol2_gregset64_reg_offset);
- #endif
- }
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