From f721e3ac031f892af46f255a47d7f54a91317b30 Mon Sep 17 00:00:00 2001 From: The Android Open Source Project Date: Tue, 3 Mar 2009 18:28:35 -0800 Subject: auto import from //depot/cupcake/@135843 --- gdbstub.c | 1593 ------------------------------------------------------------- 1 file changed, 1593 deletions(-) delete mode 100644 gdbstub.c (limited to 'gdbstub.c') diff --git a/gdbstub.c b/gdbstub.c deleted file mode 100644 index f36e504..0000000 --- a/gdbstub.c +++ /dev/null @@ -1,1593 +0,0 @@ -/* - * gdb server stub - * - * Copyright (c) 2003-2005 Fabrice Bellard - * - * 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, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ -#include "config.h" -#ifdef CONFIG_USER_ONLY -#include -#include -#include -#include -#include -#include -#include - -#include "qemu.h" -#else -#include "qemu-common.h" -#include "qemu-char.h" -#include "sysemu.h" -#include "cpu.h" -#include "gdbstub.h" -#endif - -#include "qemu_socket.h" -#ifdef _WIN32 -/* XXX: these constants may be independent of the host ones even for Unix */ -#ifndef SIGTRAP -#define SIGTRAP 5 -#endif -#ifndef SIGINT -#define SIGINT 2 -#endif -#else -#include -#endif - -//#define DEBUG_GDB - -enum RSState { - RS_IDLE, - RS_GETLINE, - RS_CHKSUM1, - RS_CHKSUM2, - RS_SYSCALL, -}; -typedef struct GDBState { - CPUState *env; /* current CPU */ - enum RSState state; /* parsing state */ - char line_buf[4096]; - int line_buf_index; - int line_csum; - uint8_t last_packet[4100]; - int last_packet_len; - int signal; -#ifdef CONFIG_USER_ONLY - int fd; - int running_state; -#else - CharDriverState *chr; -#endif -} GDBState; - -/* By default use no IRQs and no timers while single stepping so as to - * make single stepping like an ICE HW step. - */ -static int sstep_flags = SSTEP_ENABLE|SSTEP_NOIRQ|SSTEP_NOTIMER; - -#ifdef CONFIG_USER_ONLY -/* XXX: This is not thread safe. Do we care? */ -static int gdbserver_fd = -1; - -/* XXX: remove this hack. */ -static GDBState gdbserver_state; - -static int get_char(GDBState *s) -{ - uint8_t ch; - int ret; - - for(;;) { - ret = socket_recv(s->fd, &ch, 1); - if (ret < 0) { - if (errno == ECONNRESET) - s->fd = -1; - if (errno != EINTR && errno != EAGAIN) - return -1; - } else if (ret == 0) { - socket_close(s->fd); - s->fd = -1; - return -1; - } else { - break; - } - } - return ch; -} -#endif - -/* GDB stub state for use by semihosting syscalls. */ -static GDBState *gdb_syscall_state; -static gdb_syscall_complete_cb gdb_current_syscall_cb; - -enum { - GDB_SYS_UNKNOWN, - GDB_SYS_ENABLED, - GDB_SYS_DISABLED, -} gdb_syscall_mode; - -/* If gdb is connected when the first semihosting syscall occurs then use - remote gdb syscalls. Otherwise use native file IO. */ -int use_gdb_syscalls(void) -{ - if (gdb_syscall_mode == GDB_SYS_UNKNOWN) { - gdb_syscall_mode = (gdb_syscall_state ? GDB_SYS_ENABLED - : GDB_SYS_DISABLED); - } - return gdb_syscall_mode == GDB_SYS_ENABLED; -} - -/* Resume execution. */ -static inline void gdb_continue(GDBState *s) -{ -#ifdef CONFIG_USER_ONLY - s->running_state = 1; -#else - vm_start(); -#endif -} - -static void put_buffer(GDBState *s, const uint8_t *buf, int len) -{ -#ifdef CONFIG_USER_ONLY - int ret; - - while (len > 0) { - ret = socket_send(s->fd, buf, len); - if (ret < 0) { - if (errno != EINTR && errno != EAGAIN) - return; - } else { - buf += ret; - len -= ret; - } - } -#else - qemu_chr_write(s->chr, buf, len); -#endif -} - -static inline int fromhex(int v) -{ - if (v >= '0' && v <= '9') - return v - '0'; - else if (v >= 'A' && v <= 'F') - return v - 'A' + 10; - else if (v >= 'a' && v <= 'f') - return v - 'a' + 10; - else - return 0; -} - -static inline int tohex(int v) -{ - if (v < 10) - return v + '0'; - else - return v - 10 + 'a'; -} - -static void memtohex(char *buf, const uint8_t *mem, int len) -{ - int i, c; - char *q; - q = buf; - for(i = 0; i < len; i++) { - c = mem[i]; - *q++ = tohex(c >> 4); - *q++ = tohex(c & 0xf); - } - *q = '\0'; -} - -static void hextomem(uint8_t *mem, const char *buf, int len) -{ - int i; - - for(i = 0; i < len; i++) { - mem[i] = (fromhex(buf[0]) << 4) | fromhex(buf[1]); - buf += 2; - } -} - -/* return -1 if error, 0 if OK */ -static int put_packet(GDBState *s, const char *buf) -{ - int len, csum, i; - uint8_t *p; - -#ifdef DEBUG_GDB - printf("reply='%s'\n", buf); -#endif - - for(;;) { - p = s->last_packet; - *(p++) = '$'; - len = strlen(buf); - memcpy(p, buf, len); - p += len; - csum = 0; - for(i = 0; i < len; i++) { - csum += buf[i]; - } - *(p++) = '#'; - *(p++) = tohex((csum >> 4) & 0xf); - *(p++) = tohex((csum) & 0xf); - - s->last_packet_len = p - s->last_packet; - put_buffer(s, (uint8_t *)s->last_packet, s->last_packet_len); - -#ifdef CONFIG_USER_ONLY - i = get_char(s); - if (i < 0) - return -1; - if (i == '+') - break; -#else - break; -#endif - } - return 0; -} - -#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, nb_regs; - uint8_t *p; - - p = mem_buf; -#ifdef TARGET_X86_64 - if (env->hflags & HF_CS64_MASK) { - nb_regs = 16; - for(i = 0; i < 16; i++) { - *(uint64_t *)p = tswap64(env->regs[gdb_x86_64_regs[i]]); - p += 8; - } - *(uint64_t *)p = tswap64(env->eip); - p += 8; - } else -#endif - { - nb_regs = 8; - for(i = 0; i < 8; i++) { - *(uint32_t *)p = tswap32(env->regs[i]); - p += 4; - } - *(uint32_t *)p = tswap32(env->eip); - p += 4; - } - - *(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++) { - /* XXX: convert floats */ -#ifdef USE_X86LDOUBLE - memcpy(p, &env->fpregs[i], 10); -#else - memset(p, 0, 10); -#endif - p += 10; - } - *(uint32_t *)p = tswap32(env->fpuc); /* fctrl */ - p += 4; - fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11; - *(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) -{ - const uint8_t *p = mem_buf; - int i, nb_regs; - uint16_t fpus; - -#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->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) -static int cpu_gdb_read_registers(CPUState *env, uint8_t *mem_buf) -{ - uint32_t *registers = (uint32_t *)mem_buf, tmp; - int i; - - /* fill in gprs */ - for(i = 0; i < 32; i++) { - registers[i] = tswapl(env->gpr[i]); - } - /* fill in fprs */ - for (i = 0; i < 32; i++) { - registers[(i * 2) + 32] = tswapl(*((uint32_t *)&env->fpr[i])); - registers[(i * 2) + 33] = tswapl(*((uint32_t *)&env->fpr[i] + 1)); - } - /* nip, msr, ccr, lnk, ctr, xer, mq */ - registers[96] = tswapl(env->nip); - registers[97] = tswapl(env->msr); - tmp = 0; - for (i = 0; i < 8; i++) - tmp |= env->crf[i] << (32 - ((i + 1) * 4)); - registers[98] = tswapl(tmp); - registers[99] = tswapl(env->lr); - registers[100] = tswapl(env->ctr); - registers[101] = tswapl(ppc_load_xer(env)); - registers[102] = 0; - - return 103 * 4; -} - -static void cpu_gdb_write_registers(CPUState *env, uint8_t *mem_buf, int size) -{ - uint32_t *registers = (uint32_t *)mem_buf; - int i; - - /* fill in gprs */ - for (i = 0; i < 32; i++) { - env->gpr[i] = tswapl(registers[i]); - } - /* fill in fprs */ - for (i = 0; i < 32; i++) { - *((uint32_t *)&env->fpr[i]) = tswapl(registers[(i * 2) + 32]); - *((uint32_t *)&env->fpr[i] + 1) = tswapl(registers[(i * 2) + 33]); - } - /* nip, msr, ccr, lnk, ctr, xer, mq */ - env->nip = tswapl(registers[96]); - ppc_store_msr(env, tswapl(registers[97])); - registers[98] = tswapl(registers[98]); - for (i = 0; i < 8; i++) - env->crf[i] = (registers[98] >> (32 - ((i + 1) * 4))) & 0xF; - env->lr = tswapl(registers[99]); - env->ctr = tswapl(registers[100]); - ppc_store_xer(env, tswapl(registers[101])); -} -#elif defined (TARGET_SPARC) -#ifdef TARGET_ABI32 -#define tswap_abi(val) tswap32(val &0xffffffff) -#else -#define tswap_abi(val) tswapl(val) -#endif -static int cpu_gdb_read_registers(CPUState *env, uint8_t *mem_buf) -{ -#ifdef TARGET_ABI32 - abi_ulong *registers = (abi_ulong *)mem_buf; -#else - target_ulong *registers = (target_ulong *)mem_buf; -#endif - int i; - - /* fill in g0..g7 */ - for(i = 0; i < 8; i++) { - registers[i] = tswap_abi(env->gregs[i]); - } - /* fill in register window */ - for(i = 0; i < 24; i++) { - registers[i + 8] = tswap_abi(env->regwptr[i]); - } -#if !defined(TARGET_SPARC64) || defined(TARGET_ABI32) - /* fill in fprs */ - for (i = 0; i < 32; i++) { - registers[i + 32] = tswap_abi(*((uint32_t *)&env->fpr[i])); - } - /* Y, PSR, WIM, TBR, PC, NPC, FPSR, CPSR */ - registers[64] = tswap_abi(env->y); - { - uint32_t tmp; - - tmp = GET_PSR(env); - registers[65] = tswap32(tmp); - } - registers[66] = tswap_abi(env->wim); - registers[67] = tswap_abi(env->tbr); - registers[68] = tswap_abi(env->pc); - registers[69] = tswap_abi(env->npc); - registers[70] = tswap_abi(env->fsr); - registers[71] = 0; /* csr */ - registers[72] = 0; - return 73 * sizeof(uint32_t); -#else - /* fill in fprs */ - for (i = 0; i < 64; i += 2) { - uint64_t tmp; - - tmp = ((uint64_t)*(uint32_t *)&env->fpr[i]) << 32; - tmp |= *(uint32_t *)&env->fpr[i + 1]; - registers[i / 2 + 32] = tswap64(tmp); - } - registers[64] = tswapl(env->pc); - registers[65] = tswapl(env->npc); - registers[66] = tswapl(((uint64_t)GET_CCR(env) << 32) | - ((env->asi & 0xff) << 24) | - ((env->pstate & 0xfff) << 8) | - GET_CWP64(env)); - registers[67] = tswapl(env->fsr); - registers[68] = tswapl(env->fprs); - registers[69] = tswapl(env->y); - return 70 * sizeof(target_ulong); -#endif -} - -static void cpu_gdb_write_registers(CPUState *env, uint8_t *mem_buf, int size) -{ -#ifdef TARGET_ABI32 - abi_ulong *registers = (abi_ulong *)mem_buf; -#else - target_ulong *registers = (target_ulong *)mem_buf; -#endif - int i; - - /* fill in g0..g7 */ - for(i = 0; i < 7; i++) { - env->gregs[i] = tswap_abi(registers[i]); - } - /* fill in register window */ - for(i = 0; i < 24; i++) { - env->regwptr[i] = tswap_abi(registers[i + 8]); - } -#if !defined(TARGET_SPARC64) || defined(TARGET_ABI32) - /* fill in fprs */ - for (i = 0; i < 32; i++) { - *((uint32_t *)&env->fpr[i]) = tswap_abi(registers[i + 32]); - } - /* Y, PSR, WIM, TBR, PC, NPC, FPSR, CPSR */ - env->y = tswap_abi(registers[64]); - PUT_PSR(env, tswap_abi(registers[65])); - env->wim = tswap_abi(registers[66]); - env->tbr = tswap_abi(registers[67]); - env->pc = tswap_abi(registers[68]); - env->npc = tswap_abi(registers[69]); - env->fsr = tswap_abi(registers[70]); -#else - for (i = 0; i < 64; i += 2) { - uint64_t tmp; - - tmp = tswap64(registers[i / 2 + 32]); - *((uint32_t *)&env->fpr[i]) = tmp >> 32; - *((uint32_t *)&env->fpr[i + 1]) = tmp & 0xffffffff; - } - env->pc = tswapl(registers[64]); - env->npc = tswapl(registers[65]); - { - uint64_t tmp = tswapl(registers[66]); - - PUT_CCR(env, tmp >> 32); - env->asi = (tmp >> 24) & 0xff; - env->pstate = (tmp >> 8) & 0xfff; - PUT_CWP64(env, tmp & 0xff); - } - env->fsr = tswapl(registers[67]); - env->fprs = tswapl(registers[68]); - env->y = tswapl(registers[69]); -#endif -} -#undef tswap_abi -#elif defined (TARGET_ARM) -static int cpu_gdb_read_registers(CPUState *env, uint8_t *mem_buf) -{ - int i; - uint8_t *ptr; - - ptr = mem_buf; - /* 16 core integer registers (4 bytes each). */ - for (i = 0; i < 16; i++) - { - *(uint32_t *)ptr = tswapl(env->regs[i]); - ptr += 4; - } - /* 8 FPA registers (12 bytes each), FPS (4 bytes). - Not yet implemented. */ - memset (ptr, 0, 8 * 12 + 4); - ptr += 8 * 12 + 4; - /* CPSR (4 bytes). */ - *(uint32_t *)ptr = tswapl (cpsr_read(env)); - ptr += 4; - - return ptr - mem_buf; -} - -static void cpu_gdb_write_registers(CPUState *env, uint8_t *mem_buf, int size) -{ - int i; - uint8_t *ptr; - - ptr = mem_buf; - /* Core integer registers. */ - for (i = 0; i < 16; i++) - { - env->regs[i] = tswapl(*(uint32_t *)ptr); - ptr += 4; - } - /* Ignore FPA regs and scr. */ - ptr += 8 * 12 + 4; - cpsr_write (env, tswapl(*(uint32_t *)ptr), 0xffffffff); -} -#elif defined (TARGET_M68K) -static int cpu_gdb_read_registers(CPUState *env, uint8_t *mem_buf) -{ - int i; - uint8_t *ptr; - CPU_DoubleU u; - - ptr = mem_buf; - /* D0-D7 */ - for (i = 0; i < 8; i++) { - *(uint32_t *)ptr = tswapl(env->dregs[i]); - ptr += 4; - } - /* A0-A7 */ - for (i = 0; i < 8; i++) { - *(uint32_t *)ptr = tswapl(env->aregs[i]); - ptr += 4; - } - *(uint32_t *)ptr = tswapl(env->sr); - ptr += 4; - *(uint32_t *)ptr = tswapl(env->pc); - ptr += 4; - /* F0-F7. The 68881/68040 have 12-bit extended precision registers. - ColdFire has 8-bit double precision registers. */ - for (i = 0; i < 8; i++) { - u.d = env->fregs[i]; - *(uint32_t *)ptr = tswap32(u.l.upper); - *(uint32_t *)ptr = tswap32(u.l.lower); - } - /* FP control regs (not implemented). */ - memset (ptr, 0, 3 * 4); - ptr += 3 * 4; - - return ptr - mem_buf; -} - -static void cpu_gdb_write_registers(CPUState *env, uint8_t *mem_buf, int size) -{ - int i; - uint8_t *ptr; - CPU_DoubleU u; - - ptr = mem_buf; - /* D0-D7 */ - for (i = 0; i < 8; i++) { - env->dregs[i] = tswapl(*(uint32_t *)ptr); - ptr += 4; - } - /* A0-A7 */ - for (i = 0; i < 8; i++) { - env->aregs[i] = tswapl(*(uint32_t *)ptr); - ptr += 4; - } - env->sr = tswapl(*(uint32_t *)ptr); - ptr += 4; - env->pc = tswapl(*(uint32_t *)ptr); - ptr += 4; - /* F0-F7. The 68881/68040 have 12-bit extended precision registers. - ColdFire has 8-bit double precision registers. */ - for (i = 0; i < 8; i++) { - u.l.upper = tswap32(*(uint32_t *)ptr); - u.l.lower = tswap32(*(uint32_t *)ptr); - env->fregs[i] = u.d; - } - /* FP control regs (not implemented). */ - ptr += 3 * 4; -} -#elif defined (TARGET_MIPS) -static int cpu_gdb_read_registers(CPUState *env, uint8_t *mem_buf) -{ - int i; - uint8_t *ptr; - - ptr = mem_buf; - for (i = 0; i < 32; i++) - { - *(target_ulong *)ptr = tswapl(env->active_tc.gpr[i]); - ptr += sizeof(target_ulong); - } - - *(target_ulong *)ptr = (int32_t)tswap32(env->CP0_Status); - ptr += sizeof(target_ulong); - - *(target_ulong *)ptr = tswapl(env->active_tc.LO[0]); - ptr += sizeof(target_ulong); - - *(target_ulong *)ptr = tswapl(env->active_tc.HI[0]); - ptr += sizeof(target_ulong); - - *(target_ulong *)ptr = tswapl(env->CP0_BadVAddr); - ptr += sizeof(target_ulong); - - *(target_ulong *)ptr = (int32_t)tswap32(env->CP0_Cause); - ptr += sizeof(target_ulong); - - *(target_ulong *)ptr = tswapl(env->active_tc.PC); - ptr += sizeof(target_ulong); - - if (env->CP0_Config1 & (1 << CP0C1_FP)) - { - for (i = 0; i < 32; i++) - { - if (env->CP0_Status & (1 << CP0St_FR)) - *(target_ulong *)ptr = tswapl(env->fpu->fpr[i].d); - else - *(target_ulong *)ptr = tswap32(env->fpu->fpr[i].w[FP_ENDIAN_IDX]); - ptr += sizeof(target_ulong); - } - - *(target_ulong *)ptr = (int32_t)tswap32(env->fpu->fcr31); - ptr += sizeof(target_ulong); - - *(target_ulong *)ptr = (int32_t)tswap32(env->fpu->fcr0); - ptr += sizeof(target_ulong); - } - - /* "fp", pseudo frame pointer. Not yet implemented in gdb. */ - *(target_ulong *)ptr = 0; - ptr += sizeof(target_ulong); - - /* Registers for embedded use, we just pad them. */ - for (i = 0; i < 16; i++) - { - *(target_ulong *)ptr = 0; - ptr += sizeof(target_ulong); - } - - /* Processor ID. */ - *(target_ulong *)ptr = (int32_t)tswap32(env->CP0_PRid); - ptr += sizeof(target_ulong); - - return ptr - mem_buf; -} - -/* convert MIPS rounding mode in FCR31 to IEEE library */ -static unsigned int ieee_rm[] = - { - float_round_nearest_even, - float_round_to_zero, - float_round_up, - float_round_down - }; -#define RESTORE_ROUNDING_MODE \ - set_float_rounding_mode(ieee_rm[env->fpu->fcr31 & 3], &env->fpu->fp_status) - -static void cpu_gdb_write_registers(CPUState *env, uint8_t *mem_buf, int size) -{ - int i; - uint8_t *ptr; - - ptr = mem_buf; - for (i = 0; i < 32; i++) - { - env->active_tc.gpr[i] = tswapl(*(target_ulong *)ptr); - ptr += sizeof(target_ulong); - } - - env->CP0_Status = tswapl(*(target_ulong *)ptr); - ptr += sizeof(target_ulong); - - env->active_tc.LO[0] = tswapl(*(target_ulong *)ptr); - ptr += sizeof(target_ulong); - - env->active_tc.HI[0] = tswapl(*(target_ulong *)ptr); - ptr += sizeof(target_ulong); - - env->CP0_BadVAddr = tswapl(*(target_ulong *)ptr); - ptr += sizeof(target_ulong); - - env->CP0_Cause = tswapl(*(target_ulong *)ptr); - ptr += sizeof(target_ulong); - - env->active_tc.PC = tswapl(*(target_ulong *)ptr); - ptr += sizeof(target_ulong); - - if (env->CP0_Config1 & (1 << CP0C1_FP)) - { - for (i = 0; i < 32; i++) - { - if (env->CP0_Status & (1 << CP0St_FR)) - env->fpu->fpr[i].d = tswapl(*(target_ulong *)ptr); - else - env->fpu->fpr[i].w[FP_ENDIAN_IDX] = tswapl(*(target_ulong *)ptr); - ptr += sizeof(target_ulong); - } - - env->fpu->fcr31 = tswapl(*(target_ulong *)ptr) & 0xFF83FFFF; - ptr += sizeof(target_ulong); - - /* The remaining registers are assumed to be read-only. */ - - /* set rounding mode */ - RESTORE_ROUNDING_MODE; - -#ifndef CONFIG_SOFTFLOAT - /* no floating point exception for native float */ - SET_FP_ENABLE(env->fcr31, 0); -#endif - } -} -#elif defined (TARGET_SH4) - -/* Hint: Use "set architecture sh4" in GDB to see fpu registers */ - -static int cpu_gdb_read_registers(CPUState *env, uint8_t *mem_buf) -{ - uint32_t *ptr = (uint32_t *)mem_buf; - int i; - -#define SAVE(x) *ptr++=tswapl(x) - if ((env->sr & (SR_MD | SR_RB)) == (SR_MD | SR_RB)) { - for (i = 0; i < 8; i++) SAVE(env->gregs[i + 16]); - } else { - for (i = 0; i < 8; i++) SAVE(env->gregs[i]); - } - for (i = 8; i < 16; i++) SAVE(env->gregs[i]); - SAVE (env->pc); - SAVE (env->pr); - SAVE (env->gbr); - SAVE (env->vbr); - SAVE (env->mach); - SAVE (env->macl); - SAVE (env->sr); - SAVE (env->fpul); - SAVE (env->fpscr); - for (i = 0; i < 16; i++) - SAVE(env->fregs[i + ((env->fpscr & FPSCR_FR) ? 16 : 0)]); - SAVE (env->ssr); - SAVE (env->spc); - for (i = 0; i < 8; i++) SAVE(env->gregs[i]); - for (i = 0; i < 8; i++) SAVE(env->gregs[i + 16]); - return ((uint8_t *)ptr - mem_buf); -} - -static void cpu_gdb_write_registers(CPUState *env, uint8_t *mem_buf, int size) -{ - uint32_t *ptr = (uint32_t *)mem_buf; - int i; - -#define LOAD(x) (x)=*ptr++; - if ((env->sr & (SR_MD | SR_RB)) == (SR_MD | SR_RB)) { - for (i = 0; i < 8; i++) LOAD(env->gregs[i + 16]); - } else { - for (i = 0; i < 8; i++) LOAD(env->gregs[i]); - } - for (i = 8; i < 16; i++) LOAD(env->gregs[i]); - LOAD (env->pc); - LOAD (env->pr); - LOAD (env->gbr); - LOAD (env->vbr); - LOAD (env->mach); - LOAD (env->macl); - LOAD (env->sr); - LOAD (env->fpul); - LOAD (env->fpscr); - for (i = 0; i < 16; i++) - LOAD(env->fregs[i + ((env->fpscr & FPSCR_FR) ? 16 : 0)]); - LOAD (env->ssr); - LOAD (env->spc); - for (i = 0; i < 8; i++) LOAD(env->gregs[i]); - for (i = 0; i < 8; i++) LOAD(env->gregs[i + 16]); -} -#elif defined (TARGET_CRIS) - -static int cris_save_32 (unsigned char *d, uint32_t value) -{ - *d++ = (value); - *d++ = (value >>= 8); - *d++ = (value >>= 8); - *d++ = (value >>= 8); - return 4; -} -static int cris_save_16 (unsigned char *d, uint32_t value) -{ - *d++ = (value); - *d++ = (value >>= 8); - return 2; -} -static int cris_save_8 (unsigned char *d, uint32_t value) -{ - *d++ = (value); - return 1; -} - -/* FIXME: this will bug on archs not supporting unaligned word accesses. */ -static int cpu_gdb_read_registers(CPUState *env, uint8_t *mem_buf) -{ - uint8_t *ptr = mem_buf; - uint8_t srs; - int i; - - for (i = 0; i < 16; i++) - ptr += cris_save_32 (ptr, env->regs[i]); - - srs = env->pregs[PR_SRS]; - - ptr += cris_save_8 (ptr, env->pregs[0]); - ptr += cris_save_8 (ptr, env->pregs[1]); - ptr += cris_save_32 (ptr, env->pregs[2]); - ptr += cris_save_8 (ptr, srs); - ptr += cris_save_16 (ptr, env->pregs[4]); - - for (i = 5; i < 16; i++) - ptr += cris_save_32 (ptr, env->pregs[i]); - - ptr += cris_save_32 (ptr, env->pc); - - for (i = 0; i < 16; i++) - ptr += cris_save_32 (ptr, env->sregs[srs][i]); - - return ((uint8_t *)ptr - mem_buf); -} - -static void cpu_gdb_write_registers(CPUState *env, uint8_t *mem_buf, int size) -{ - uint32_t *ptr = (uint32_t *)mem_buf; - int i; - -#define LOAD(x) (x)=*ptr++; - for (i = 0; i < 16; i++) LOAD(env->regs[i]); - LOAD (env->pc); -} -#else -static int cpu_gdb_read_registers(CPUState *env, uint8_t *mem_buf) -{ - return 0; -} - -static void cpu_gdb_write_registers(CPUState *env, uint8_t *mem_buf, int size) -{ -} - -#endif - -static int gdb_handle_packet(GDBState *s, CPUState *env, const char *line_buf) -{ - const char *p; - int ch, reg_size, type; - char buf[4096]; - uint8_t mem_buf[4096]; - uint32_t *registers; - target_ulong addr, len; - -#ifdef DEBUG_GDB - printf("command='%s'\n", line_buf); -#endif - p = line_buf; - ch = *p++; - switch(ch) { - case '?': - /* TODO: Make this return the correct value for user-mode. */ - snprintf(buf, sizeof(buf), "S%02x", SIGTRAP); - put_packet(s, buf); - /* Remove all the breakpoints when this query is issued, - * because gdb is doing and initial connect and the state - * should be cleaned up. - */ - cpu_breakpoint_remove_all(env); - cpu_watchpoint_remove_all(env); - break; - case 'c': - if (*p != '\0') { - addr = strtoull(p, (char **)&p, 16); -#if defined(TARGET_I386) - env->eip = addr; -#elif defined (TARGET_PPC) - env->nip = addr; -#elif defined (TARGET_SPARC) - env->pc = addr; - env->npc = addr + 4; -#elif defined (TARGET_ARM) - env->regs[15] = addr; -#elif defined (TARGET_SH4) - env->pc = addr; -#elif defined (TARGET_MIPS) - env->active_tc.PC = addr; -#elif defined (TARGET_CRIS) - env->pc = addr; -#endif - } - gdb_continue(s); - return RS_IDLE; - case 'C': - s->signal = strtoul(p, (char **)&p, 16); - gdb_continue(s); - return RS_IDLE; - case 'k': - /* Kill the target */ - fprintf(stderr, "\nQEMU: Terminated via GDBstub\n"); - exit(0); - case 'D': - /* Detach packet */ - cpu_breakpoint_remove_all(env); - cpu_watchpoint_remove_all(env); - gdb_continue(s); - put_packet(s, "OK"); - break; - case 's': - if (*p != '\0') { - addr = strtoull(p, (char **)&p, 16); -#if defined(TARGET_I386) - env->eip = addr; -#elif defined (TARGET_PPC) - env->nip = addr; -#elif defined (TARGET_SPARC) - env->pc = addr; - env->npc = addr + 4; -#elif defined (TARGET_ARM) - env->regs[15] = addr; -#elif defined (TARGET_SH4) - env->pc = addr; -#elif defined (TARGET_MIPS) - env->active_tc.PC = addr; -#elif defined (TARGET_CRIS) - env->pc = addr; -#endif - } - cpu_single_step(env, sstep_flags); - gdb_continue(s); - return RS_IDLE; - case 'F': - { - target_ulong ret; - target_ulong err; - - ret = strtoull(p, (char **)&p, 16); - if (*p == ',') { - p++; - err = strtoull(p, (char **)&p, 16); - } else { - err = 0; - } - if (*p == ',') - p++; - type = *p; - if (gdb_current_syscall_cb) - gdb_current_syscall_cb(s->env, ret, err); - if (type == 'C') { - put_packet(s, "T02"); - } else { - gdb_continue(s); - } - } - break; - case 'g': - reg_size = cpu_gdb_read_registers(env, mem_buf); - memtohex(buf, mem_buf, reg_size); - put_packet(s, buf); - break; - case 'G': - registers = (void *)mem_buf; - len = strlen(p) / 2; - hextomem((uint8_t *)registers, p, len); - cpu_gdb_write_registers(env, mem_buf, len); - put_packet(s, "OK"); - break; - case 'm': - addr = strtoull(p, (char **)&p, 16); - if (*p == ',') - p++; - len = strtoull(p, NULL, 16); - if (cpu_memory_rw_debug(env, addr, mem_buf, len, 0) != 0) { - put_packet (s, "E14"); - } else { - memtohex(buf, mem_buf, len); - put_packet(s, buf); - } - break; - case 'M': - addr = strtoull(p, (char **)&p, 16); - if (*p == ',') - p++; - len = strtoull(p, (char **)&p, 16); - if (*p == ':') - p++; - hextomem(mem_buf, p, len); - if (cpu_memory_rw_debug(env, addr, mem_buf, len, 1) != 0) - put_packet(s, "E14"); - else - put_packet(s, "OK"); - break; - case 'Z': - type = strtoul(p, (char **)&p, 16); - if (*p == ',') - p++; - addr = strtoull(p, (char **)&p, 16); - if (*p == ',') - p++; - len = strtoull(p, (char **)&p, 16); - switch (type) { - case 0: - case 1: - if (cpu_breakpoint_insert(env, addr) < 0) - goto breakpoint_error; - put_packet(s, "OK"); - break; -#ifndef CONFIG_USER_ONLY - case 2: - type = PAGE_WRITE; - goto insert_watchpoint; - case 3: - type = PAGE_READ; - goto insert_watchpoint; - case 4: - type = PAGE_READ | PAGE_WRITE; - insert_watchpoint: - if (cpu_watchpoint_insert(env, addr, type) < 0) - goto breakpoint_error; - put_packet(s, "OK"); - break; -#endif - default: - put_packet(s, ""); - break; - } - break; - breakpoint_error: - put_packet(s, "E22"); - break; - - case 'z': - type = strtoul(p, (char **)&p, 16); - if (*p == ',') - p++; - addr = strtoull(p, (char **)&p, 16); - if (*p == ',') - p++; - len = strtoull(p, (char **)&p, 16); - if (type == 0 || type == 1) { - cpu_breakpoint_remove(env, addr); - put_packet(s, "OK"); -#ifndef CONFIG_USER_ONLY - } else if (type >= 2 || type <= 4) { - cpu_watchpoint_remove(env, addr); - put_packet(s, "OK"); -#endif - } else { - put_packet(s, ""); - } - break; - case 'q': - case 'Q': - /* parse any 'q' packets here */ - if (!strcmp(p,"qemu.sstepbits")) { - /* Query Breakpoint bit definitions */ - snprintf(buf, sizeof(buf), "ENABLE=%x,NOIRQ=%x,NOTIMER=%x", - SSTEP_ENABLE, - SSTEP_NOIRQ, - SSTEP_NOTIMER); - put_packet(s, buf); - break; - } else if (strncmp(p,"qemu.sstep",10) == 0) { - /* Display or change the sstep_flags */ - p += 10; - if (*p != '=') { - /* Display current setting */ - snprintf(buf, sizeof(buf), "0x%x", sstep_flags); - put_packet(s, buf); - break; - } - p++; - type = strtoul(p, (char **)&p, 16); - sstep_flags = type; - put_packet(s, "OK"); - break; - } -#ifdef CONFIG_LINUX_USER - else if (strncmp(p, "Offsets", 7) == 0) { - TaskState *ts = env->opaque; - - snprintf(buf, sizeof(buf), - "Text=" TARGET_ABI_FMT_lx ";Data=" TARGET_ABI_FMT_lx - ";Bss=" TARGET_ABI_FMT_lx, - ts->info->code_offset, - ts->info->data_offset, - ts->info->data_offset); - put_packet(s, buf); - break; - } -#endif - /* Fall through. */ - default: - /* put empty packet */ - buf[0] = '\0'; - put_packet(s, buf); - break; - } - return RS_IDLE; -} - -extern void tb_flush(CPUState *env); - -#ifndef CONFIG_USER_ONLY -static void gdb_vm_stopped(void *opaque, int reason) -{ - GDBState *s = opaque; - char buf[256]; - int ret; - - if (s->state == RS_SYSCALL) - return; - - /* disable single step if it was enable */ - cpu_single_step(s->env, 0); - - if (reason == EXCP_DEBUG) { - if (s->env->watchpoint_hit) { - snprintf(buf, sizeof(buf), "T%02xwatch:" TARGET_FMT_lx ";", - SIGTRAP, - s->env->watchpoint[s->env->watchpoint_hit - 1].vaddr); - put_packet(s, buf); - s->env->watchpoint_hit = 0; - return; - } - tb_flush(s->env); - ret = SIGTRAP; - } else if (reason == EXCP_INTERRUPT) { - ret = SIGINT; - } else { - ret = 0; - } - snprintf(buf, sizeof(buf), "S%02x", ret); - put_packet(s, buf); -} -#endif - -/* Send a gdb syscall request. - This accepts limited printf-style format specifiers, specifically: - %x - target_ulong argument printed in hex. - %lx - 64-bit argument printed in hex. - %s - string pointer (target_ulong) and length (int) pair. */ -void gdb_do_syscall(gdb_syscall_complete_cb cb, const char *fmt, ...) -{ - va_list va; - char buf[256]; - char *p; - target_ulong addr; - uint64_t i64; - GDBState *s; - - s = gdb_syscall_state; - if (!s) - return; - gdb_current_syscall_cb = cb; - s->state = RS_SYSCALL; -#ifndef CONFIG_USER_ONLY - vm_stop(EXCP_DEBUG); -#endif - s->state = RS_IDLE; - va_start(va, fmt); - p = buf; - *(p++) = 'F'; - while (*fmt) { - if (*fmt == '%') { - fmt++; - switch (*fmt++) { - case 'x': - addr = va_arg(va, target_ulong); - p += snprintf(p, &buf[sizeof(buf)] - p, TARGET_FMT_lx, addr); - break; - case 'l': - if (*(fmt++) != 'x') - goto bad_format; - i64 = va_arg(va, uint64_t); - p += snprintf(p, &buf[sizeof(buf)] - p, "%" PRIx64, i64); - break; - case 's': - addr = va_arg(va, target_ulong); - p += snprintf(p, &buf[sizeof(buf)] - p, TARGET_FMT_lx "/%x", - addr, va_arg(va, int)); - break; - default: - bad_format: - fprintf(stderr, "gdbstub: Bad syscall format string '%s'\n", - fmt - 1); - break; - } - } else { - *(p++) = *(fmt++); - } - } - *p = 0; - va_end(va); - put_packet(s, buf); -#ifdef CONFIG_USER_ONLY - gdb_handlesig(s->env, 0); -#else - cpu_interrupt(s->env, CPU_INTERRUPT_EXIT); -#endif -} - -static void gdb_read_byte(GDBState *s, int ch) -{ - CPUState *env = s->env; - int i, csum; - uint8_t reply; - -#ifndef CONFIG_USER_ONLY - if (s->last_packet_len) { - /* Waiting for a response to the last packet. If we see the start - of a new command then abandon the previous response. */ - if (ch == '-') { -#ifdef DEBUG_GDB - printf("Got NACK, retransmitting\n"); -#endif - put_buffer(s, (uint8_t *)s->last_packet, s->last_packet_len); - } -#ifdef DEBUG_GDB - else if (ch == '+') - printf("Got ACK\n"); - else - printf("Got '%c' when expecting ACK/NACK\n", ch); -#endif - if (ch == '+' || ch == '$') - s->last_packet_len = 0; - if (ch != '$') - return; - } - if (vm_running) { - /* when the CPU is running, we cannot do anything except stop - it when receiving a char */ - vm_stop(EXCP_INTERRUPT); - } else -#endif - { - switch(s->state) { - case RS_IDLE: - if (ch == '$') { - s->line_buf_index = 0; - s->state = RS_GETLINE; - } - break; - case RS_GETLINE: - if (ch == '#') { - s->state = RS_CHKSUM1; - } else if (s->line_buf_index >= sizeof(s->line_buf) - 1) { - s->state = RS_IDLE; - } else { - s->line_buf[s->line_buf_index++] = ch; - } - break; - case RS_CHKSUM1: - s->line_buf[s->line_buf_index] = '\0'; - s->line_csum = fromhex(ch) << 4; - s->state = RS_CHKSUM2; - break; - case RS_CHKSUM2: - s->line_csum |= fromhex(ch); - csum = 0; - for(i = 0; i < s->line_buf_index; i++) { - csum += s->line_buf[i]; - } - if (s->line_csum != (csum & 0xff)) { - reply = '-'; - put_buffer(s, &reply, 1); - s->state = RS_IDLE; - } else { - reply = '+'; - put_buffer(s, &reply, 1); - s->state = gdb_handle_packet(s, env, s->line_buf); - } - break; - default: - abort(); - } - } -} - -#ifdef CONFIG_USER_ONLY -int -gdb_handlesig (CPUState *env, int sig) -{ - GDBState *s; - char buf[256]; - int n; - - s = &gdbserver_state; - if (gdbserver_fd < 0 || s->fd < 0) - return sig; - - /* disable single step if it was enabled */ - cpu_single_step(env, 0); - tb_flush(env); - - if (sig != 0) - { - snprintf(buf, sizeof(buf), "S%02x", sig); - put_packet(s, buf); - } - /* put_packet() might have detected that the peer terminated the - connection. */ - if (s->fd < 0) - return sig; - - sig = 0; - s->state = RS_IDLE; - s->running_state = 0; - while (s->running_state == 0) { - n = read (s->fd, buf, 256); - if (n > 0) - { - int i; - - for (i = 0; i < n; i++) - gdb_read_byte (s, buf[i]); - } - else if (n == 0 || errno != EAGAIN) - { - /* XXX: Connection closed. Should probably wait for annother - connection before continuing. */ - return sig; - } - } - sig = s->signal; - s->signal = 0; - return sig; -} - -/* Tell the remote gdb that the process has exited. */ -void gdb_exit(CPUState *env, int code) -{ - GDBState *s; - char buf[4]; - - s = &gdbserver_state; - if (gdbserver_fd < 0 || s->fd < 0) - return; - - snprintf(buf, sizeof(buf), "W%02x", code); - put_packet(s, buf); -} - - -static void gdb_accept(void *opaque) -{ - GDBState *s; - int fd; - - for(;;) { - fd = socket_accept(gdbserver_fd, NULL); - if (fd < 0) { - perror("accept"); - return; - } else if (fd >= 0) { - break; - } - } - - /* set short latency */ - socket_set_lowlatency(fd); - - s = &gdbserver_state; - memset (s, 0, sizeof (GDBState)); - s->env = first_cpu; /* XXX: allow to change CPU */ - s->fd = fd; - - gdb_syscall_state = s; - - socket_set_nonblock(fd); -} - -static int gdbserver_open(int port) -{ - SockAddress sockaddr; - int fd, val, ret; - - fd = socket_create_inet( SOCKET_STREAM ); - if (fd < 0) { - perror("socket"); - return -1; - } - - /* allow fast reuse */ - socket_set_xreuseaddr(fd); - - sock_address_init_inet( &sockaddr, port, SOCK_ADDRESS_INET_ANY ); - ret = socket_bind(fd, &sockaddr); - if (ret < 0) { - perror("bind"); - return -1; - } - ret = socket_listen(fd, 0); - if (ret < 0) { - perror("listen"); - socket_close(fd); - return -1; - } - return fd; -} - -int gdbserver_start(int port) -{ - gdbserver_fd = gdbserver_open(port); - if (gdbserver_fd < 0) - return -1; - /* accept connections */ - gdb_accept (NULL); - return 0; -} -#else -static int gdb_chr_can_receive(void *opaque) -{ - return 1; -} - -static void gdb_chr_receive(void *opaque, const uint8_t *buf, int size) -{ - GDBState *s = opaque; - int i; - - for (i = 0; i < size; i++) { - gdb_read_byte(s, buf[i]); - } -} - -static void gdb_chr_event(void *opaque, int event) -{ - switch (event) { - case CHR_EVENT_RESET: - vm_stop(EXCP_INTERRUPT); - gdb_syscall_state = opaque; - break; - default: - break; - } -} - -int gdbserver_start(const char *port) -{ - GDBState *s; - char gdbstub_port_name[128]; - int port_num; - char *p; - CharDriverState *chr; - - if (!port || !*port) - return -1; - - port_num = strtol(port, &p, 10); - if (*p == 0) { - /* A numeric value is interpreted as a port number. */ - snprintf(gdbstub_port_name, sizeof(gdbstub_port_name), - "tcp::%d,nowait,nodelay,server", port_num); - port = gdbstub_port_name; - } - - chr = qemu_chr_open(port); - if (!chr) - return -1; - - s = qemu_mallocz(sizeof(GDBState)); - if (!s) { - return -1; - } - s->env = first_cpu; /* XXX: allow to change CPU */ - s->chr = chr; - qemu_chr_add_handlers(chr, gdb_chr_can_receive, gdb_chr_receive, - gdb_chr_event, s); - qemu_add_vm_stop_handler(gdb_vm_stopped, s); - return 0; -} -#endif -- cgit v1.1