From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:47953) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1S7dco-0006tK-CJ for qemu-devel@nongnu.org; Tue, 13 Mar 2012 22:07:39 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1S7dcm-0006pa-5r for qemu-devel@nongnu.org; Tue, 13 Mar 2012 22:07:37 -0400 Received: from [222.73.24.84] (port=16773 helo=song.cn.fujitsu.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1S7dcl-0006pL-B5 for qemu-devel@nongnu.org; Tue, 13 Mar 2012 22:07:36 -0400 Message-ID: <4F5FFDD6.2000300@cn.fujitsu.com> Date: Wed, 14 Mar 2012 10:09:26 +0800 From: Wen Congyang MIME-Version: 1.0 References: <4F5FFC63.3060300@cn.fujitsu.com> In-Reply-To: <4F5FFC63.3060300@cn.fujitsu.com> Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=ISO-8859-1 Subject: [Qemu-devel] [RFC][PATCH 08/14 v9] target-i386: Add API to write cpu status to core file List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel , Jan Kiszka , Dave Anderson , HATAYAMA Daisuke , Luiz Capitulino , Eric Blake The core file has register's value. But it does not include all registers value. Store the cpu status into QEMU note, and the user can get more information from vmcore. If you change QEMUCPUState, please count up QEMUCPUSTATE_VERSION. Signed-off-by: Wen Congyang --- cpu-all.h | 20 ++++++ target-i386/arch_dump.c | 150 +++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 170 insertions(+), 0 deletions(-) diff --git a/cpu-all.h b/cpu-all.h index 1d681f8..f30c822 100644 --- a/cpu-all.h +++ b/cpu-all.h @@ -539,6 +539,10 @@ int cpu_write_elf64_note(write_core_dump_function f, CPUState *env, int cpuid, target_phys_addr_t *offset, void *opaque); int cpu_write_elf32_note(write_core_dump_function f, CPUState *env, int cpuid, target_phys_addr_t *offset, void *opaque); +int cpu_write_elf64_qemunote(write_core_dump_function f, CPUState *env, + target_phys_addr_t *offset, void *opaque); +int cpu_write_elf32_qemunote(write_core_dump_function f, CPUState *env, + target_phys_addr_t *offset, void *opaque); #else static inline int cpu_write_elf64_note(write_core_dump_function f, CPUState *env, int cpuid, @@ -553,6 +557,22 @@ static inline int cpu_write_elf32_note(write_core_dump_function f, { return -1; } + +static inline int cpu_write_elf64_qemunote(write_core_dump_function f, + CPUState *env, + target_phys_addr_t *offset, + void *opaque); +{ + return -1; +} + +static inline int cpu_write_elf32_qemunote(write_core_dump_function f, + CPUState *env, + target_phys_addr_t *offset, + void *opaque) +{ + return -1; +} #endif #endif /* CPU_ALL_H */ diff --git a/target-i386/arch_dump.c b/target-i386/arch_dump.c index 3239c40..274bbec 100644 --- a/target-i386/arch_dump.c +++ b/target-i386/arch_dump.c @@ -247,3 +247,153 @@ int cpu_write_elf32_note(write_core_dump_function f, CPUState *env, int cpuid, return 0; } + +/* + * please count up QEMUCPUSTATE_VERSION if you have changed definition of + * QEMUCPUState, and modify the tools using this information accordingly. + */ +#define QEMUCPUSTATE_VERSION (1) + +struct QEMUCPUSegment { + uint32_t selector; + uint32_t limit; + uint32_t flags; + uint32_t pad; + uint64_t base; +}; + +typedef struct QEMUCPUSegment QEMUCPUSegment; + +struct QEMUCPUState { + uint32_t version; + uint32_t size; + uint64_t rax, rbx, rcx, rdx, rsi, rdi, rsp, rbp; + uint64_t r8, r9, r10, r11, r12, r13, r14, r15; + uint64_t rip, rflags; + QEMUCPUSegment cs, ds, es, fs, gs, ss; + QEMUCPUSegment ldt, tr, gdt, idt; + uint64_t cr[5]; +}; + +typedef struct QEMUCPUState QEMUCPUState; + +static void copy_segment(QEMUCPUSegment *d, SegmentCache *s) +{ + d->pad = 0; + d->selector = s->selector; + d->limit = s->limit; + d->flags = s->flags; + d->base = s->base; +} + +static void qemu_get_cpustate(QEMUCPUState *s, CPUState *env) +{ + memset(s, 0, sizeof(QEMUCPUState)); + + s->version = QEMUCPUSTATE_VERSION; + s->size = sizeof(QEMUCPUState); + + s->rax = env->regs[R_EAX]; + s->rbx = env->regs[R_EBX]; + s->rcx = env->regs[R_ECX]; + s->rdx = env->regs[R_EDX]; + s->rsi = env->regs[R_ESI]; + s->rdi = env->regs[R_EDI]; + s->rsp = env->regs[R_ESP]; + s->rbp = env->regs[R_EBP]; +#ifdef TARGET_X86_64 + s->r8 = env->regs[8]; + s->r9 = env->regs[9]; + s->r10 = env->regs[10]; + s->r11 = env->regs[11]; + s->r12 = env->regs[12]; + s->r13 = env->regs[13]; + s->r14 = env->regs[14]; + s->r15 = env->regs[15]; +#endif + s->rip = env->eip; + s->rflags = env->eflags; + + copy_segment(&s->cs, &env->segs[R_CS]); + copy_segment(&s->ds, &env->segs[R_DS]); + copy_segment(&s->es, &env->segs[R_ES]); + copy_segment(&s->fs, &env->segs[R_FS]); + copy_segment(&s->gs, &env->segs[R_GS]); + copy_segment(&s->ss, &env->segs[R_SS]); + copy_segment(&s->ldt, &env->ldt); + copy_segment(&s->tr, &env->tr); + copy_segment(&s->gdt, &env->gdt); + copy_segment(&s->idt, &env->idt); + + s->cr[0] = env->cr[0]; + s->cr[1] = env->cr[1]; + s->cr[2] = env->cr[2]; + s->cr[3] = env->cr[3]; + s->cr[4] = env->cr[4]; +} + +static inline int cpu_write_qemu_note(write_core_dump_function f, CPUState *env, + target_phys_addr_t *offset, void *opaque, + int type) +{ + QEMUCPUState state; + Elf64_Nhdr *note64; + Elf32_Nhdr *note32; + void *note; + char *buf; + int descsz, note_size, name_size = 5, note_head_size; + const char *name = "QEMU"; + int ret; + + qemu_get_cpustate(&state, env); + + descsz = sizeof(state); + if (type == 0) { + note_head_size = sizeof(Elf32_Nhdr); + } else { + note_head_size = sizeof(Elf64_Nhdr); + } + note_size = ((note_head_size + 3) / 4 + (name_size + 3) / 4 + + (descsz + 3) / 4) * 4; + note = g_malloc(note_size); + + memset(note, 0, note_size); + if (type == 0) { + note32 = note; + note32->n_namesz = cpu_to_le32(name_size); + note32->n_descsz = cpu_to_le32(descsz); + note32->n_type = 0; + } else { + note64 = note; + note64->n_namesz = cpu_to_le32(name_size); + note64->n_descsz = cpu_to_le32(descsz); + note64->n_type = 0; + } + buf = note; + buf += ((note_head_size + 3) / 4) * 4; + memcpy(buf, name, name_size); + buf += ((name_size + 3) / 4) * 4; + memcpy(buf, &state, sizeof(state)); + + ret = f(*offset, note, note_size, opaque); + g_free(note); + if (ret < 0) { + return -1; + } + + *offset += note_size; + + return 0; +} + +int cpu_write_elf64_qemunote(write_core_dump_function f, CPUState *env, + target_phys_addr_t *offset, void *opaque) +{ + return cpu_write_qemu_note(f, env, offset, opaque, 1); +} + +int cpu_write_elf32_qemunote(write_core_dump_function f, CPUState *env, + target_phys_addr_t *offset, void *opaque) +{ + return cpu_write_qemu_note(f, env, offset, opaque, 0); +} -- 1.7.1