@@ -246,6 +246,29 @@ translator_ldq_swap(CPUArchState *env, DisasContextBase *db,
*/
void translator_fake_ldb(DisasContextBase *db, vaddr pc, uint8_t insn8);
+/**
+ * translator_st
+ * @db: disassembly context
+ * @dest: address to copy into
+ * @addr: virtual address within TB
+ * @len: length
+ *
+ * Copy @len bytes from @addr into @dest.
+ * All bytes must have been read during translation.
+ * Return true on success or false on failure.
+ */
+bool translator_st(const DisasContextBase *db, void *dest,
+ vaddr addr, size_t len);
+
+/**
+ * translator_st_len
+ * @db: disassembly context
+ *
+ * Return the number of bytes available to copy from the
+ * current translation block with translator_st.
+ */
+size_t translator_st_len(const DisasContextBase *db);
+
#ifdef NEED_CPU_H
/*
* Return whether addr is on the same page as where disassembly started.
@@ -353,6 +353,61 @@ static void record_save(DisasContextBase *db, vaddr pc,
memcpy(db->record + (offset - db->record_start), from, size);
}
+size_t translator_st_len(const DisasContextBase *db)
+{
+ return db->fake_insn ? db->record_len : db->tb->size;
+}
+
+bool translator_st(const DisasContextBase *db, void *dest,
+ vaddr addr, size_t len)
+{
+ size_t offset, offset_end;
+
+ if (addr < db->pc_first) {
+ return false;
+ }
+ offset = addr - db->pc_first;
+ offset_end = offset + len;
+ if (offset_end > translator_st_len(db)) {
+ return false;
+ }
+
+ if (!db->fake_insn) {
+ size_t offset_page1 = -(db->pc_first | TARGET_PAGE_MASK);
+
+ /* Get all the bytes from the first page. */
+ if (db->host_addr[0]) {
+ if (offset_end <= offset_page1) {
+ memcpy(dest, db->host_addr[0] + offset, len);
+ return true;
+ }
+ if (offset < offset_page1) {
+ size_t len0 = offset_page1 - offset;
+ memcpy(dest, db->host_addr[0] + offset, len0);
+ offset += len0;
+ dest += len0;
+ }
+ }
+
+ /* Get any bytes from the second page. */
+ if (db->host_addr[1] && offset >= offset_page1) {
+ memcpy(dest, db->host_addr[1] + (offset - offset_page1),
+ offset_end - offset);
+ return true;
+ }
+ }
+
+ /* Else get recorded bytes. */
+ if (db->record_len != 0 &&
+ offset >= db->record_start &&
+ offset_end <= db->record_start + db->record_len) {
+ memcpy(dest, db->record + (offset - db->record_start),
+ offset_end - offset);
+ return true;
+ }
+ return false;
+}
+
static void plugin_insn_append(vaddr pc, const void *from, size_t size)
{
#ifdef CONFIG_PLUGIN
Copy data out of a completed translation. This will be used for both plugins and disassembly. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> --- include/exec/translator.h | 23 ++++++++++++++++ accel/tcg/translator.c | 55 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 78 insertions(+)