mirror of https://github.com/proxmox/mirror_qemu
82 lines
2.2 KiB
C
82 lines
2.2 KiB
C
/*
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* Functions related to disassembly from the monitor
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "qemu/osdep.h"
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#include "disas-internal.h"
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#include "disas/disas.h"
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#include "exec/memory.h"
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#include "hw/core/cpu.h"
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#include "monitor/monitor.h"
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/*
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* Get LENGTH bytes from info's buffer, at target address memaddr.
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* Transfer them to myaddr.
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*/
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static int
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virtual_read_memory(bfd_vma memaddr, bfd_byte *myaddr, int length,
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struct disassemble_info *info)
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{
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CPUDebug *s = container_of(info, CPUDebug, info);
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int r = cpu_memory_rw_debug(s->cpu, memaddr, myaddr, length, 0);
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return r ? EIO : 0;
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}
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static int
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physical_read_memory(bfd_vma memaddr, bfd_byte *myaddr, int length,
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struct disassemble_info *info)
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{
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CPUDebug *s = container_of(info, CPUDebug, info);
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MemTxResult res;
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res = address_space_read(s->cpu->as, memaddr, MEMTXATTRS_UNSPECIFIED,
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myaddr, length);
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return res == MEMTX_OK ? 0 : EIO;
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}
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/* Disassembler for the monitor. */
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void monitor_disas(Monitor *mon, CPUState *cpu, uint64_t pc,
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int nb_insn, bool is_physical)
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{
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int count, i;
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CPUDebug s;
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g_autoptr(GString) ds = g_string_new("");
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disas_initialize_debug_target(&s, cpu);
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s.info.fprintf_func = disas_gstring_printf;
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s.info.stream = (FILE *)ds; /* abuse this slot */
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s.info.show_opcodes = true;
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if (is_physical) {
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s.info.read_memory_func = physical_read_memory;
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} else {
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s.info.read_memory_func = virtual_read_memory;
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}
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s.info.buffer_vma = pc;
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if (s.info.cap_arch >= 0 && cap_disas_monitor(&s.info, pc, nb_insn)) {
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monitor_puts(mon, ds->str);
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return;
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}
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if (!s.info.print_insn) {
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monitor_printf(mon, "0x%08" PRIx64
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": Asm output not supported on this arch\n", pc);
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return;
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}
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for (i = 0; i < nb_insn; i++) {
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g_string_append_printf(ds, "0x%08" PRIx64 ": ", pc);
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count = s.info.print_insn(pc, &s.info);
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g_string_append_c(ds, '\n');
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if (count < 0) {
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break;
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}
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pc += count;
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}
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monitor_puts(mon, ds->str);
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}
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