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bsd-user: Add target_arch_reg to describe a target's register set

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target_reg_t is the normal register. target_fpreg_t is the floating
point registers. target_copy_regs copies the registers out of CPU
context for things like core dumps.

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Warner Losh 2021-08-06 14:02:10 -06:00 committed by Warner Losh
parent 6a3b9bfde0
commit e4442059dd
2 changed files with 174 additions and 0 deletions
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82
bsd-user/i386/target_arch_reg.h Normal file
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/*
* FreeBSD i386 register structures
*
* Copyright (c) 2015 Stacey Son
* All rights reserved.
*
* 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
* (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/>.
*/
#ifndef _TARGET_ARCH_REG_H_
#define _TARGET_ARCH_REG_H_
/* See sys/i386/include/reg.h */
typedef struct target_reg {
uint32_t r_fs;
uint32_t r_es;
uint32_t r_ds;
uint32_t r_edi;
uint32_t r_esi;
uint32_t r_ebp;
uint32_t r_isp;
uint32_t r_ebx;
uint32_t r_edx;
uint32_t r_ecx;
uint32_t r_eax;
uint32_t r_trapno;
uint32_t r_err;
uint32_t r_eip;
uint32_t r_cs;
uint32_t r_eflags;
uint32_t r_esp;
uint32_t r_ss;
uint32_t r_gs;
} target_reg_t;
typedef struct target_fpreg {
uint32_t fpr_env[7];
uint8_t fpr_acc[8][10];
uint32_t fpr_ex_sw;
uint8_t fpr_pad[64];
} target_fpreg_t;
static inline void target_copy_regs(target_reg_t *regs, const CPUX86State *env)
{
regs->r_fs = env->segs[R_FS].selector & 0xffff;
regs->r_es = env->segs[R_ES].selector & 0xffff;
regs->r_ds = env->segs[R_DS].selector & 0xffff;
regs->r_edi = env->regs[R_EDI];
regs->r_esi = env->regs[R_ESI];
regs->r_ebp = env->regs[R_EBP];
/* regs->r_isp = env->regs[R_ISP]; XXX */
regs->r_ebx = env->regs[R_EBX];
regs->r_edx = env->regs[R_EDX];
regs->r_ecx = env->regs[R_ECX];
regs->r_eax = env->regs[R_EAX];
/* regs->r_trapno = env->regs[R_TRAPNO]; XXX */
regs->r_err = env->error_code; /* XXX ? */
regs->r_eip = env->eip;
regs->r_cs = env->segs[R_CS].selector & 0xffff;
regs->r_eflags = env->eflags;
regs->r_esp = env->regs[R_ESP];
regs->r_ss = env->segs[R_SS].selector & 0xffff;
regs->r_gs = env->segs[R_GS].selector & 0xffff;
}
#endif /* !_TARGET_ARCH_REG_H_ */

92
bsd-user/x86_64/target_arch_reg.h Normal file
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/*
* FreeBSD amd64 register structures
*
* Copyright (c) 2015 Stacey Son
* All rights reserved.
*
* 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
* (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/>.
*/
#ifndef _TARGET_ARCH_REG_H_
#define _TARGET_ARCH_REG_H_
/* See sys/amd64/include/reg.h */
typedef struct target_reg {
uint64_t r_r15;
uint64_t r_r14;
uint64_t r_r13;
uint64_t r_r12;
uint64_t r_r11;
uint64_t r_r10;
uint64_t r_r9;
uint64_t r_r8;
uint64_t r_rdi;
uint64_t r_rsi;
uint64_t r_rbp;
uint64_t r_rbx;
uint64_t r_rdx;
uint64_t r_rcx;
uint64_t r_rax;
uint32_t r_trapno;
uint16_t r_fs;
uint16_t r_gs;
uint32_t r_err;
uint16_t r_es;
uint16_t r_ds;
uint64_t r_rip;
uint64_t r_cs;
uint64_t r_rflags;
uint64_t r_rsp;
uint64_t r_ss;
} target_reg_t;
typedef struct target_fpreg {
uint64_t fpr_env[4];
uint8_t fpr_acc[8][16];
uint8_t fpr_xacc[16][16];
uint64_t fpr_spare[12];
} target_fpreg_t;
static inline void target_copy_regs(target_reg_t *regs, const CPUX86State *env)
{
regs->r_r15 = env->regs[15];
regs->r_r14 = env->regs[14];
regs->r_r13 = env->regs[13];
regs->r_r12 = env->regs[12];
regs->r_r11 = env->regs[11];
regs->r_r10 = env->regs[10];
regs->r_r9 = env->regs[9];
regs->r_r8 = env->regs[8];
regs->r_rdi = env->regs[R_EDI];
regs->r_rsi = env->regs[R_ESI];
regs->r_rbp = env->regs[R_EBP];
regs->r_rbx = env->regs[R_EBX];
regs->r_rdx = env->regs[R_EDX];
regs->r_rcx = env->regs[R_ECX];
regs->r_rax = env->regs[R_EAX];
/* regs->r_trapno = env->regs[R_TRAPNO]; XXX */
regs->r_fs = env->segs[R_FS].selector & 0xffff;
regs->r_gs = env->segs[R_GS].selector & 0xffff;
regs->r_err = env->error_code; /* XXX ? */
regs->r_es = env->segs[R_ES].selector & 0xffff;
regs->r_ds = env->segs[R_DS].selector & 0xffff;
regs->r_rip = env->eip;
regs->r_cs = env->segs[R_CS].selector & 0xffff;
regs->r_rflags = env->eflags;
regs->r_rsp = env->regs[R_ESP];
regs->r_ss = env->segs[R_SS].selector & 0xffff;
}
#endif /* !_TARGET_ARCH_REG_H_ */