From 798085733c81a33b4185a0f06c2b591544372fce Mon Sep 17 00:00:00 2001 From: bellard Date: Fri, 9 May 2008 14:40:22 +0000 Subject: x86_64 and better i386 support git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4394 c046a42c-6fe2-441c-8c8c-71466251a162 --- gdbstub.c | 233 +++++++++++++++++++++++++++++++++++++++----------------------- 1 file changed, 147 insertions(+), 86 deletions(-) (limited to 'gdbstub.c') diff --git a/gdbstub.c b/gdbstub.c index 423db5eb86..9a361e3251 100644 --- a/gdbstub.c +++ b/gdbstub.c @@ -240,112 +240,173 @@ static int put_packet(GDBState *s, char *buf) } #if defined(TARGET_I386) + +#ifdef TARGET_X86_64 +static const uint8_t gdb_x86_64_regs[16] = { + R_EAX, R_EBX, R_ECX, R_EDX, R_ESI, R_EDI, R_EBP, R_ESP, + 8, 9, 10, 11, 12, 13, 14, 15, +}; +#endif + static int cpu_gdb_read_registers(CPUState *env, uint8_t *mem_buf) { - int i, fpus; - uint32_t *registers = (uint32_t *)mem_buf; + int i, fpus, nb_regs; + uint8_t *p; + p = mem_buf; #ifdef TARGET_X86_64 - /* This corresponds with amd64_register_info[] in gdb/amd64-tdep.c */ - uint64_t *registers64 = (uint64_t *)mem_buf; - if (env->hflags & HF_CS64_MASK) { - registers64[0] = tswap64(env->regs[R_EAX]); - registers64[1] = tswap64(env->regs[R_EBX]); - registers64[2] = tswap64(env->regs[R_ECX]); - registers64[3] = tswap64(env->regs[R_EDX]); - registers64[4] = tswap64(env->regs[R_ESI]); - registers64[5] = tswap64(env->regs[R_EDI]); - registers64[6] = tswap64(env->regs[R_EBP]); - registers64[7] = tswap64(env->regs[R_ESP]); - for(i = 8; i < 16; i++) { - registers64[i] = tswap64(env->regs[i]); + nb_regs = 16; + for(i = 0; i < 16; i++) { + *(uint64_t *)p = tswap64(env->regs[gdb_x86_64_regs[i]]); + p += 8; } - registers64[16] = tswap64(env->eip); - - registers = (uint32_t *)®isters64[17]; - registers[0] = tswap32(env->eflags); - registers[1] = tswap32(env->segs[R_CS].selector); - registers[2] = tswap32(env->segs[R_SS].selector); - registers[3] = tswap32(env->segs[R_DS].selector); - registers[4] = tswap32(env->segs[R_ES].selector); - registers[5] = tswap32(env->segs[R_FS].selector); - registers[6] = tswap32(env->segs[R_GS].selector); - /* XXX: convert floats */ + *(uint64_t *)p = tswap64(env->eip); + p += 8; + } else +#endif + { + nb_regs = 8; for(i = 0; i < 8; i++) { - memcpy(mem_buf + 16 * 8 + 7 * 4 + i * 10, &env->fpregs[i], 10); - } - registers[27] = tswap32(env->fpuc); /* fctrl */ - fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11; - registers[28] = tswap32(fpus); /* fstat */ - registers[29] = 0; /* ftag */ - registers[30] = 0; /* fiseg */ - registers[31] = 0; /* fioff */ - registers[32] = 0; /* foseg */ - registers[33] = 0; /* fooff */ - registers[34] = 0; /* fop */ - for(i = 0; i < 16; i++) { - memcpy(mem_buf + 16 * 8 + 35 * 4 + i * 16, &env->xmm_regs[i], 16); + *(uint32_t *)p = tswap32(env->regs[i]); + p += 4; } - registers[99] = tswap32(env->mxcsr); - - return 8 * 17 + 4 * 7 + 10 * 8 + 4 * 8 + 16 * 16 + 4; + *(uint32_t *)p = tswap32(env->eip); + p += 4; } -#endif + *(uint32_t *)p = tswap32(env->eflags); + p += 4; + *(uint32_t *)p = tswap32(env->segs[R_CS].selector); + p += 4; + *(uint32_t *)p = tswap32(env->segs[R_SS].selector); + p += 4; + *(uint32_t *)p = tswap32(env->segs[R_DS].selector); + p += 4; + *(uint32_t *)p = tswap32(env->segs[R_ES].selector); + p += 4; + *(uint32_t *)p = tswap32(env->segs[R_FS].selector); + p += 4; + *(uint32_t *)p = tswap32(env->segs[R_GS].selector); + p += 4; for(i = 0; i < 8; i++) { - registers[i] = env->regs[i]; - } - registers[8] = env->eip; - registers[9] = env->eflags; - registers[10] = env->segs[R_CS].selector; - registers[11] = env->segs[R_SS].selector; - registers[12] = env->segs[R_DS].selector; - registers[13] = env->segs[R_ES].selector; - registers[14] = env->segs[R_FS].selector; - registers[15] = env->segs[R_GS].selector; - /* XXX: convert floats */ - for(i = 0; i < 8; i++) { - memcpy(mem_buf + 16 * 4 + i * 10, &env->fpregs[i], 10); + /* XXX: convert floats */ +#ifdef USE_X86LDOUBLE + memcpy(p, &env->fpregs[i], 10); +#else + memset(p, 0, 10); +#endif + p += 10; } - registers[36] = env->fpuc; + *(uint32_t *)p = tswap32(env->fpuc); /* fctrl */ + p += 4; fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11; - registers[37] = fpus; - registers[38] = 0; /* XXX: convert tags */ - registers[39] = 0; /* fiseg */ - registers[40] = 0; /* fioff */ - registers[41] = 0; /* foseg */ - registers[42] = 0; /* fooff */ - registers[43] = 0; /* fop */ - - for(i = 0; i < 16; i++) - tswapls(®isters[i]); - for(i = 36; i < 44; i++) - tswapls(®isters[i]); - return 44 * 4; + *(uint32_t *)p = tswap32(fpus); /* fstat */ + p += 4; + *(uint32_t *)p = 0; /* ftag */ + p += 4; + *(uint32_t *)p = 0; /* fiseg */ + p += 4; + *(uint32_t *)p = 0; /* fioff */ + p += 4; + *(uint32_t *)p = 0; /* foseg */ + p += 4; + *(uint32_t *)p = 0; /* fooff */ + p += 4; + *(uint32_t *)p = 0; /* fop */ + p += 4; + for(i = 0; i < nb_regs; i++) { + *(uint64_t *)p = tswap64(env->xmm_regs[i].XMM_Q(0)); + p += 8; + *(uint64_t *)p = tswap64(env->xmm_regs[i].XMM_Q(1)); + p += 8; + } + *(uint32_t *)p = tswap32(env->mxcsr); + p += 4; + return p - mem_buf; +} + +static inline void cpu_gdb_load_seg(CPUState *env, const uint8_t **pp, + int sreg) +{ + const uint8_t *p; + uint32_t sel; + p = *pp; + sel = tswap32(*(uint32_t *)p); + p += 4; + if (sel != env->segs[sreg].selector) { +#if defined(CONFIG_USER_ONLY) + cpu_x86_load_seg(env, sreg, sel); +#else + /* XXX: do it with a debug function which does not raise an + exception */ +#endif + } + *pp = p; } static void cpu_gdb_write_registers(CPUState *env, uint8_t *mem_buf, int size) { - uint32_t *registers = (uint32_t *)mem_buf; - int i; + const uint8_t *p = mem_buf; + int i, nb_regs; + uint16_t fpus; - for(i = 0; i < 8; i++) { - env->regs[i] = tswapl(registers[i]); +#ifdef TARGET_X86_64 + if (env->hflags & HF_CS64_MASK) { + nb_regs = 16; + for(i = 0; i < 16; i++) { + env->regs[gdb_x86_64_regs[i]] = tswap64(*(uint64_t *)p); + p += 8; + } + env->eip = tswap64(*(uint64_t *)p); + p += 8; + } else +#endif + { + nb_regs = 8; + for(i = 0; i < 8; i++) { + env->regs[i] = tswap32(*(uint32_t *)p); + p += 4; + } + env->eip = tswap32(*(uint32_t *)p); + p += 4; } - env->eip = tswapl(registers[8]); - env->eflags = tswapl(registers[9]); -#if defined(CONFIG_USER_ONLY) -#define LOAD_SEG(index, sreg)\ - if (tswapl(registers[index]) != env->segs[sreg].selector)\ - cpu_x86_load_seg(env, sreg, tswapl(registers[index])); - LOAD_SEG(10, R_CS); - LOAD_SEG(11, R_SS); - LOAD_SEG(12, R_DS); - LOAD_SEG(13, R_ES); - LOAD_SEG(14, R_FS); - LOAD_SEG(15, R_GS); + env->eflags = tswap32(*(uint32_t *)p); + p += 4; + cpu_gdb_load_seg(env, &p, R_CS); + cpu_gdb_load_seg(env, &p, R_SS); + cpu_gdb_load_seg(env, &p, R_DS); + cpu_gdb_load_seg(env, &p, R_ES); + cpu_gdb_load_seg(env, &p, R_FS); + cpu_gdb_load_seg(env, &p, R_GS); + + /* FPU state */ + for(i = 0; i < 8; i++) { + /* XXX: convert floats */ +#ifdef USE_X86LDOUBLE + memcpy(&env->fpregs[i], p, 10); #endif + p += 10; + } + env->fpuc = tswap32(*(uint32_t *)p); /* fctrl */ + p += 4; + fpus = tswap32(*(uint32_t *)p); + p += 4; + env->fpstt = (fpus >> 11) & 7; + env->fpus = fpus & ~0x3800; + p += 4 * 6; + + if (size >= ((p - mem_buf) + 16 * nb_regs + 4)) { + /* SSE state */ + for(i = 0; i < nb_regs; i++) { + env->xmm_regs[i].XMM_Q(0) = tswap64(*(uint64_t *)p); + p += 8; + env->xmm_regs[i].XMM_Q(1) = tswap64(*(uint64_t *)p); + p += 8; + } + env->mxcsr = tswap32(*(uint32_t *)p); + p += 4; + } } #elif defined (TARGET_PPC) -- cgit v1.2.3