disas: Split disas.c
The routines in disas-common.c are also used from disas-mon.c.
Otherwise the rest of disassembly is only used from tcg.
While we're at it, put host and target code into separate files.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
diff --git a/disas/disas-target.c b/disas/disas-target.c
new file mode 100644
index 0000000..82313b2
--- /dev/null
+++ b/disas/disas-target.c
@@ -0,0 +1,84 @@
+/*
+ * Routines for target instruction disassembly.
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "qemu/osdep.h"
+#include "disas/disas.h"
+#include "disas/capstone.h"
+#include "disas-internal.h"
+
+
+void target_disas(FILE *out, CPUState *cpu, uint64_t code, size_t size)
+{
+ uint64_t pc;
+ int count;
+ CPUDebug s;
+
+ disas_initialize_debug_target(&s, cpu);
+ s.info.fprintf_func = fprintf;
+ s.info.stream = out;
+ s.info.buffer_vma = code;
+ s.info.buffer_length = size;
+ s.info.show_opcodes = true;
+
+ if (s.info.cap_arch >= 0 && cap_disas_target(&s.info, code, size)) {
+ return;
+ }
+
+ if (s.info.print_insn == NULL) {
+ s.info.print_insn = print_insn_od_target;
+ }
+
+ for (pc = code; size > 0; pc += count, size -= count) {
+ fprintf(out, "0x%08" PRIx64 ": ", pc);
+ count = s.info.print_insn(pc, &s.info);
+ fprintf(out, "\n");
+ if (count < 0) {
+ break;
+ }
+ if (size < count) {
+ fprintf(out,
+ "Disassembler disagrees with translator over instruction "
+ "decoding\n"
+ "Please report this to qemu-devel@nongnu.org\n");
+ break;
+ }
+ }
+}
+
+#ifdef CONFIG_PLUGIN
+static void plugin_print_address(bfd_vma addr, struct disassemble_info *info)
+{
+ /* does nothing */
+}
+
+/*
+ * We should only be dissembling one instruction at a time here. If
+ * 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)
+{
+ CPUDebug s;
+ GString *ds = g_string_new(NULL);
+
+ disas_initialize_debug_target(&s, cpu);
+ s.info.fprintf_func = disas_gstring_printf;
+ s.info.stream = (FILE *)ds; /* abuse this slot */
+ s.info.buffer_vma = addr;
+ s.info.buffer_length = size;
+ s.info.print_address_func = plugin_print_address;
+
+ if (s.info.cap_arch >= 0 && cap_disas_plugin(&s.info, addr, size)) {
+ ; /* done */
+ } else if (s.info.print_insn) {
+ s.info.print_insn(addr, &s.info);
+ } else {
+ ; /* cannot disassemble -- return empty string */
+ }
+
+ /* Return the buffer, freeing the GString container. */
+ return g_string_free(ds, false);
+}
+#endif /* CONFIG_PLUGIN */
