@@ -4,14 +4,15 @@
/* Disassemble this for me please... (debugging). */
#ifdef CONFIG_TCG
void disas(FILE *out, const void *code, size_t size);
-void target_disas(FILE *out, CPUState *cpu, uint64_t code, size_t size);
+void target_disas(FILE *out, CPUState *cpu, const DisasContextBase *db);
#endif
void monitor_disas(Monitor *mon, CPUState *cpu, uint64_t pc,
int nb_insn, bool is_physical);
#ifdef CONFIG_PLUGIN
-char *plugin_disas(CPUState *cpu, uint64_t addr, size_t size);
+char *plugin_disas(CPUState *cpu, const DisasContextBase *db,
+ uint64_t addr, size_t size);
#endif
/* Look up symbol for debugging purpose. Returns "" if unknown. */
@@ -79,7 +79,7 @@ typedef enum DisasJumpType {
*
* Architecture-agnostic disassembly context.
*/
-typedef struct DisasContextBase {
+struct DisasContextBase {
TranslationBlock *tb;
vaddr pc_first;
vaddr pc_next;
@@ -103,7 +103,7 @@ typedef struct DisasContextBase {
int record_start;
int record_len;
uint8_t record[32];
-} DisasContextBase;
+};
/**
* TranslatorOps:
@@ -50,6 +50,7 @@ typedef struct CPUTLBEntryFull CPUTLBEntryFull;
typedef struct DeviceListener DeviceListener;
typedef struct DeviceState DeviceState;
typedef struct DirtyBitmapSnapshot DirtyBitmapSnapshot;
+typedef struct DisasContextBase DisasContextBase;
typedef struct DisplayChangeListener DisplayChangeListener;
typedef struct DriveInfo DriveInfo;
typedef struct DumpState DumpState;
@@ -230,7 +230,7 @@ void translator_loop(CPUState *cpu, TranslationBlock *tb, int *max_insns,
if (!ops->disas_log ||
!ops->disas_log(db, cpu, logfile)) {
fprintf(logfile, "IN: %s\n", lookup_symbol(db->pc_first));
- target_disas(logfile, cpu, db->pc_first, db->tb->size);
+ target_disas(logfile, cpu, db);
}
fprintf(logfile, "\n");
qemu_log_unlock(logfile);
@@ -7,25 +7,12 @@
#include "disas/disas.h"
#include "disas/capstone.h"
#include "hw/core/cpu.h"
-#include "exec/memory.h"
#include "disas-internal.h"
/* Filled in by elfload.c. Simplistic, but will do for now. */
struct syminfo *syminfos = NULL;
-/*
- * Get LENGTH bytes from info's buffer, at target address memaddr.
- * Transfer them to myaddr.
- */
-static int target_read_memory(bfd_vma memaddr, bfd_byte *myaddr, int length,
- struct disassemble_info *info)
-{
- CPUDebug *s = container_of(info, CPUDebug, info);
- int r = cpu_memory_rw_debug(s->cpu, memaddr, myaddr, length, 0);
- return r ? EIO : 0;
-}
-
/*
* Print an error message. We can assume that this is in response to
* an error return from {host,target}_read_memory.
@@ -72,7 +59,6 @@ void disas_initialize_debug_target(CPUDebug *s, CPUState *cpu)
disas_initialize_debug(s);
s->cpu = cpu;
- s->info.read_memory_func = target_read_memory;
s->info.print_address_func = print_address;
if (target_words_bigendian()) {
s->info.endian = BFD_ENDIAN_BIG;
@@ -11,6 +11,19 @@
#include "hw/core/cpu.h"
#include "monitor/monitor.h"
+/*
+ * Get LENGTH bytes from info's buffer, at target address memaddr.
+ * Transfer them to myaddr.
+ */
+static int
+virtual_read_memory(bfd_vma memaddr, bfd_byte *myaddr, int length,
+ struct disassemble_info *info)
+{
+ CPUDebug *s = container_of(info, CPUDebug, info);
+ int r = cpu_memory_rw_debug(s->cpu, memaddr, myaddr, length, 0);
+ return r ? EIO : 0;
+}
+
static int
physical_read_memory(bfd_vma memaddr, bfd_byte *myaddr, int length,
struct disassemble_info *info)
@@ -38,6 +51,8 @@ void monitor_disas(Monitor *mon, CPUState *cpu, uint64_t pc,
if (is_physical) {
s.info.read_memory_func = physical_read_memory;
+ } else {
+ s.info.read_memory_func = virtual_read_memory;
}
s.info.buffer_vma = pc;
@@ -6,16 +6,28 @@
#include "qemu/osdep.h"
#include "disas/disas.h"
#include "disas/capstone.h"
+#include "exec/translator.h"
#include "disas-internal.h"
-void target_disas(FILE *out, CPUState *cpu, uint64_t code, size_t size)
+static int translator_read_memory(bfd_vma memaddr, bfd_byte *myaddr,
+ int length, struct disassemble_info *info)
{
+ const DisasContextBase *db = info->application_data;
+ return translator_st(db, myaddr, memaddr, length) ? 0 : EIO;
+}
+
+void target_disas(FILE *out, CPUState *cpu, const struct DisasContextBase *db)
+{
+ uint64_t code = db->pc_first;
+ size_t size = translator_st_len(db);
uint64_t pc;
int count;
CPUDebug s;
disas_initialize_debug_target(&s, cpu);
+ s.info.read_memory_func = translator_read_memory;
+ s.info.application_data = (void *)db;
s.info.fprintf_func = fprintf;
s.info.stream = out;
s.info.buffer_vma = code;
@@ -58,12 +70,15 @@ static void plugin_print_address(bfd_vma addr, struct disassemble_info *info)
* there is left over it usually indicates the front end has read more
* bytes than it needed.
*/
-char *plugin_disas(CPUState *cpu, uint64_t addr, size_t size)
+char *plugin_disas(CPUState *cpu, const DisasContextBase *db,
+ uint64_t addr, size_t size)
{
CPUDebug s;
GString *ds = g_string_new(NULL);
disas_initialize_debug_target(&s, cpu);
+ s.info.read_memory_func = translator_read_memory;
+ s.info.application_data = (void *)db;
s.info.fprintf_func = disas_gstring_printf;
s.info.stream = (FILE *)ds; /* abuse this slot */
s.info.buffer_vma = addr;
@@ -271,8 +271,8 @@ void *qemu_plugin_insn_haddr(const struct qemu_plugin_insn *insn)
char *qemu_plugin_insn_disas(const struct qemu_plugin_insn *insn)
{
- CPUState *cpu = current_cpu;
- return plugin_disas(cpu, insn->vaddr, insn->len);
+ return plugin_disas(tcg_ctx->cpu, tcg_ctx->plugin_db,
+ insn->vaddr, insn->len);
}
const char *qemu_plugin_insn_symbol(const struct qemu_plugin_insn *insn)
Read from already translated pages, or saved mmio data. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> --- include/disas/disas.h | 5 +++-- include/exec/translator.h | 4 ++-- include/qemu/typedefs.h | 1 + accel/tcg/translator.c | 2 +- disas/disas-common.c | 14 -------------- disas/disas-mon.c | 15 +++++++++++++++ disas/disas-target.c | 19 +++++++++++++++++-- plugins/api.c | 4 ++-- 8 files changed, 41 insertions(+), 23 deletions(-)