diff options
Diffstat (limited to 'target/sparc/gdbstub.c')
| -rw-r--r-- | target/sparc/gdbstub.c | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/target/sparc/gdbstub.c b/target/sparc/gdbstub.c new file mode 100644 index 0000000000..ffc2baa2e7 --- /dev/null +++ b/target/sparc/gdbstub.c @@ -0,0 +1,209 @@ +/* + * SPARC gdb server stub + * + * Copyright (c) 2003-2005 Fabrice Bellard + * Copyright (c) 2013 SUSE LINUX Products GmbH + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see <http://www.gnu.org/licenses/>. + */ +#include "qemu/osdep.h" +#include "qemu-common.h" +#include "cpu.h" +#include "exec/gdbstub.h" + +#ifdef TARGET_ABI32 +#define gdb_get_rega(buf, val) gdb_get_reg32(buf, val) +#else +#define gdb_get_rega(buf, val) gdb_get_regl(buf, val) +#endif + +int sparc_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n) +{ + SPARCCPU *cpu = SPARC_CPU(cs); + CPUSPARCState *env = &cpu->env; + + if (n < 8) { + /* g0..g7 */ + return gdb_get_rega(mem_buf, env->gregs[n]); + } + if (n < 32) { + /* register window */ + return gdb_get_rega(mem_buf, env->regwptr[n - 8]); + } +#if defined(TARGET_ABI32) || !defined(TARGET_SPARC64) + if (n < 64) { + /* fprs */ + if (n & 1) { + return gdb_get_reg32(mem_buf, env->fpr[(n - 32) / 2].l.lower); + } else { + return gdb_get_reg32(mem_buf, env->fpr[(n - 32) / 2].l.upper); + } + } + /* Y, PSR, WIM, TBR, PC, NPC, FPSR, CPSR */ + switch (n) { + case 64: + return gdb_get_rega(mem_buf, env->y); + case 65: + return gdb_get_rega(mem_buf, cpu_get_psr(env)); + case 66: + return gdb_get_rega(mem_buf, env->wim); + case 67: + return gdb_get_rega(mem_buf, env->tbr); + case 68: + return gdb_get_rega(mem_buf, env->pc); + case 69: + return gdb_get_rega(mem_buf, env->npc); + case 70: + return gdb_get_rega(mem_buf, env->fsr); + case 71: + return gdb_get_rega(mem_buf, 0); /* csr */ + default: + return gdb_get_rega(mem_buf, 0); + } +#else + if (n < 64) { + /* f0-f31 */ + if (n & 1) { + return gdb_get_reg32(mem_buf, env->fpr[(n - 32) / 2].l.lower); + } else { + return gdb_get_reg32(mem_buf, env->fpr[(n - 32) / 2].l.upper); + } + } + if (n < 80) { + /* f32-f62 (double width, even numbers only) */ + return gdb_get_reg64(mem_buf, env->fpr[(n - 32) / 2].ll); + } + switch (n) { + case 80: + return gdb_get_regl(mem_buf, env->pc); + case 81: + return gdb_get_regl(mem_buf, env->npc); + case 82: + return gdb_get_regl(mem_buf, (cpu_get_ccr(env) << 32) | + ((env->asi & 0xff) << 24) | + ((env->pstate & 0xfff) << 8) | + cpu_get_cwp64(env)); + case 83: + return gdb_get_regl(mem_buf, env->fsr); + case 84: + return gdb_get_regl(mem_buf, env->fprs); + case 85: + return gdb_get_regl(mem_buf, env->y); + } +#endif + return 0; +} + +int sparc_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) +{ + SPARCCPU *cpu = SPARC_CPU(cs); + CPUSPARCState *env = &cpu->env; +#if defined(TARGET_ABI32) + abi_ulong tmp; + + tmp = ldl_p(mem_buf); +#else + target_ulong tmp; + + tmp = ldtul_p(mem_buf); +#endif + + if (n < 8) { + /* g0..g7 */ + env->gregs[n] = tmp; + } else if (n < 32) { + /* register window */ + env->regwptr[n - 8] = tmp; + } +#if defined(TARGET_ABI32) || !defined(TARGET_SPARC64) + else if (n < 64) { + /* fprs */ + /* f0-f31 */ + if (n & 1) { + env->fpr[(n - 32) / 2].l.lower = tmp; + } else { + env->fpr[(n - 32) / 2].l.upper = tmp; + } + } else { + /* Y, PSR, WIM, TBR, PC, NPC, FPSR, CPSR */ + switch (n) { + case 64: + env->y = tmp; + break; + case 65: + cpu_put_psr(env, tmp); + break; + case 66: + env->wim = tmp; + break; + case 67: + env->tbr = tmp; + break; + case 68: + env->pc = tmp; + break; + case 69: + env->npc = tmp; + break; + case 70: + env->fsr = tmp; + break; + default: + return 0; + } + } + return 4; +#else + else if (n < 64) { + /* f0-f31 */ + tmp = ldl_p(mem_buf); + if (n & 1) { + env->fpr[(n - 32) / 2].l.lower = tmp; + } else { + env->fpr[(n - 32) / 2].l.upper = tmp; + } + return 4; + } else if (n < 80) { + /* f32-f62 (double width, even numbers only) */ + env->fpr[(n - 32) / 2].ll = tmp; + } else { + switch (n) { + case 80: + env->pc = tmp; + break; + case 81: + env->npc = tmp; + break; + case 82: + cpu_put_ccr(env, tmp >> 32); + env->asi = (tmp >> 24) & 0xff; + env->pstate = (tmp >> 8) & 0xfff; + cpu_put_cwp64(env, tmp & 0xff); + break; + case 83: + env->fsr = tmp; + break; + case 84: + env->fprs = tmp; + break; + case 85: + env->y = tmp; + break; + default: + return 0; + } + } + return 8; +#endif +} |