| 1 | /* |
| 2 | * RX gdb server stub |
| 3 | * |
| 4 | * Copyright (c) 2019 Yoshinori Sato |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify it |
| 7 | * under the terms and conditions of the GNU General Public License, |
| 8 | * version 2 or later, as published by the Free Software Foundation. |
| 9 | * |
| 10 | * This program is distributed in the hope it will be useful, but WITHOUT |
| 11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 13 | * more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License along with |
| 16 | * this program. If not, see <http://www.gnu.org/licenses/>. |
| 17 | */ |
| 18 | #include "qemu/osdep.h" |
| 19 | #include "cpu.h" |
| 20 | #include "gdbstub/helpers.h" |
| 21 | |
| 22 | int rx_cpu_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n) |
| 23 | { |
| 24 | CPURXState *env = cpu_env(cs); |
| 25 | |
| 26 | switch (n) { |
| 27 | case 0 ... 15: |
| 28 | return gdb_get_reg32(mem_buf, env->regs[n]); |
| 29 | case 16: |
| 30 | return gdb_get_reg32(mem_buf, (env->psw_u) ? env->regs[0] : env->usp); |
| 31 | case 17: |
| 32 | return gdb_get_reg32(mem_buf, (!env->psw_u) ? env->regs[0] : env->isp); |
| 33 | case 18: |
| 34 | return gdb_get_reg32(mem_buf, rx_cpu_pack_psw(env)); |
| 35 | case 19: |
| 36 | return gdb_get_reg32(mem_buf, env->pc); |
| 37 | case 20: |
| 38 | return gdb_get_reg32(mem_buf, env->intb); |
| 39 | case 21: |
| 40 | return gdb_get_reg32(mem_buf, env->bpsw); |
| 41 | case 22: |
| 42 | return gdb_get_reg32(mem_buf, env->bpc); |
| 43 | case 23: |
| 44 | return gdb_get_reg32(mem_buf, env->fintv); |
| 45 | case 24: |
| 46 | return gdb_get_reg32(mem_buf, env->fpsw); |
| 47 | case 25: |
| 48 | return 0; |
| 49 | } |
| 50 | return 0; |
| 51 | } |
| 52 | |
| 53 | int rx_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) |
| 54 | { |
| 55 | CPURXState *env = cpu_env(cs); |
| 56 | uint32_t psw; |
| 57 | switch (n) { |
| 58 | case 0 ... 15: |
| 59 | env->regs[n] = ldl_le_p(mem_buf); |
| 60 | if (n == 0) { |
| 61 | if (env->psw_u) { |
| 62 | env->usp = env->regs[0]; |
| 63 | } else { |
| 64 | env->isp = env->regs[0]; |
| 65 | } |
| 66 | } |
| 67 | break; |
| 68 | case 16: |
| 69 | env->usp = ldl_le_p(mem_buf); |
| 70 | if (env->psw_u) { |
| 71 | env->regs[0] = ldl_le_p(mem_buf); |
| 72 | } |
| 73 | break; |
| 74 | case 17: |
| 75 | env->isp = ldl_le_p(mem_buf); |
| 76 | if (!env->psw_u) { |
| 77 | env->regs[0] = ldl_le_p(mem_buf); |
| 78 | } |
| 79 | break; |
| 80 | case 18: |
| 81 | psw = ldl_le_p(mem_buf); |
| 82 | rx_cpu_unpack_psw(env, psw, 1); |
| 83 | break; |
| 84 | case 19: |
| 85 | env->pc = ldl_le_p(mem_buf); |
| 86 | break; |
| 87 | case 20: |
| 88 | env->intb = ldl_le_p(mem_buf); |
| 89 | break; |
| 90 | case 21: |
| 91 | env->bpsw = ldl_le_p(mem_buf); |
| 92 | break; |
| 93 | case 22: |
| 94 | env->bpc = ldl_le_p(mem_buf); |
| 95 | break; |
| 96 | case 23: |
| 97 | env->fintv = ldl_le_p(mem_buf); |
| 98 | break; |
| 99 | case 24: |
| 100 | env->fpsw = ldl_le_p(mem_buf); |
| 101 | break; |
| 102 | case 25: |
| 103 | return 8; |
| 104 | default: |
| 105 | return 0; |
| 106 | } |
| 107 | |
| 108 | return 4; |
| 109 | } |