| /* Native-dependent code for Solaris x86. |
| |
| Copyright (C) 1988-2024 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 "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 |
| } |