| 1 | /* |
| 2 | * RISC-V register structures |
| 3 | * |
| 4 | * Copyright (c) 2019 Mark Corbin |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
| 18 | */ |
| 19 | |
| 20 | #ifndef TARGET_ARCH_REG_H |
| 21 | #define TARGET_ARCH_REG_H |
| 22 | |
| 23 | /* Compare with riscv/include/reg.h */ |
| 24 | typedef struct target_reg { |
| 25 | uint64_t ra; /* return address */ |
| 26 | uint64_t sp; /* stack pointer */ |
| 27 | uint64_t gp; /* global pointer */ |
| 28 | uint64_t tp; /* thread pointer */ |
| 29 | uint64_t t[7]; /* temporaries */ |
| 30 | uint64_t s[12]; /* saved registers */ |
| 31 | uint64_t a[8]; /* function arguments */ |
| 32 | uint64_t sepc; /* exception program counter */ |
| 33 | uint64_t sstatus; /* status register */ |
| 34 | } target_reg_t; |
| 35 | |
| 36 | typedef struct target_fpreg { |
| 37 | uint64_t fp_x[32][2]; /* Floating point registers */ |
| 38 | uint64_t fp_fcsr; /* Floating point control reg */ |
| 39 | } target_fpreg_t; |
| 40 | |
| 41 | #define tswapreg(ptr) tswapal(ptr) |
| 42 | |
| 43 | /* Compare with struct trapframe in riscv/include/frame.h */ |
| 44 | static inline void target_copy_regs(target_reg_t *regs, |
| 45 | const CPURISCVState *env) |
| 46 | { |
| 47 | |
| 48 | regs->ra = tswapreg(env->gpr[1]); |
| 49 | regs->sp = tswapreg(env->gpr[2]); |
| 50 | regs->gp = tswapreg(env->gpr[3]); |
| 51 | regs->tp = tswapreg(env->gpr[4]); |
| 52 | |
| 53 | regs->t[0] = tswapreg(env->gpr[5]); |
| 54 | regs->t[1] = tswapreg(env->gpr[6]); |
| 55 | regs->t[2] = tswapreg(env->gpr[7]); |
| 56 | regs->t[3] = tswapreg(env->gpr[28]); |
| 57 | regs->t[4] = tswapreg(env->gpr[29]); |
| 58 | regs->t[5] = tswapreg(env->gpr[30]); |
| 59 | regs->t[6] = tswapreg(env->gpr[31]); |
| 60 | |
| 61 | regs->s[0] = tswapreg(env->gpr[8]); |
| 62 | regs->s[1] = tswapreg(env->gpr[9]); |
| 63 | regs->s[2] = tswapreg(env->gpr[18]); |
| 64 | regs->s[3] = tswapreg(env->gpr[19]); |
| 65 | regs->s[4] = tswapreg(env->gpr[20]); |
| 66 | regs->s[5] = tswapreg(env->gpr[21]); |
| 67 | regs->s[6] = tswapreg(env->gpr[22]); |
| 68 | regs->s[7] = tswapreg(env->gpr[23]); |
| 69 | regs->s[8] = tswapreg(env->gpr[24]); |
| 70 | regs->s[9] = tswapreg(env->gpr[25]); |
| 71 | regs->s[10] = tswapreg(env->gpr[26]); |
| 72 | regs->s[11] = tswapreg(env->gpr[27]); |
| 73 | |
| 74 | regs->a[0] = tswapreg(env->gpr[10]); |
| 75 | regs->a[1] = tswapreg(env->gpr[11]); |
| 76 | regs->a[2] = tswapreg(env->gpr[12]); |
| 77 | regs->a[3] = tswapreg(env->gpr[13]); |
| 78 | regs->a[4] = tswapreg(env->gpr[14]); |
| 79 | regs->a[5] = tswapreg(env->gpr[15]); |
| 80 | regs->a[6] = tswapreg(env->gpr[16]); |
| 81 | regs->a[7] = tswapreg(env->gpr[17]); |
| 82 | |
| 83 | regs->sepc = tswapreg(env->pc); |
| 84 | } |
| 85 | |
| 86 | #undef tswapreg |
| 87 | |
| 88 | #endif /* TARGET_ARCH_REG_H */ |