disas: Move softmmu specific code to separate file

We'd like to move disas.c into the common code source set, where
CONFIG_USER_ONLY is not available anymore. So we have to move
the related code into a separate file instead.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20230508133745.109463-2-thuth@redhat.com>
[rth: Type change done in a separate patch]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

disas/disas-internal.h

@@ -0,0 +1,21 @@
+/*
+ * Definitions used internally in the disassembly code
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#ifndef DISAS_INTERNAL_H
+#define DISAS_INTERNAL_H
+
+#include "disas/dis-asm.h"
+
+typedef struct CPUDebug {
+    struct disassemble_info info;
+    CPUState *cpu;
+} CPUDebug;
+
+void disas_initialize_debug_target(CPUDebug *s, CPUState *cpu);
+int disas_gstring_printf(FILE *stream, const char *fmt, ...)
+    G_GNUC_PRINTF(2, 3);
+
+#endif

disas/disas-mon.c

@@ -0,0 +1,65 @@
+/*
+ * Functions related to disassembly from the monitor
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "qemu/osdep.h"
+#include "disas-internal.h"
+#include "disas/disas.h"
+#include "exec/memory.h"
+#include "hw/core/cpu.h"
+#include "monitor/monitor.h"
+
+static int
+physical_read_memory(bfd_vma memaddr, bfd_byte *myaddr, int length,
+                     struct disassemble_info *info)
+{
+    CPUDebug *s = container_of(info, CPUDebug, info);
+    MemTxResult res;
+
+    res = address_space_read(s->cpu->as, memaddr, MEMTXATTRS_UNSPECIFIED,
+                             myaddr, length);
+    return res == MEMTX_OK ? 0 : EIO;
+}
+
+/* Disassembler for the monitor.  */
+void monitor_disas(Monitor *mon, CPUState *cpu, uint64_t pc,
+                   int nb_insn, bool is_physical)
+{
+    int count, i;
+    CPUDebug s;
+    g_autoptr(GString) ds = g_string_new("");
+
+    disas_initialize_debug_target(&s, cpu);
+    s.info.fprintf_func = disas_gstring_printf;
+    s.info.stream = (FILE *)ds;  /* abuse this slot */
+
+    if (is_physical) {
+        s.info.read_memory_func = physical_read_memory;
+    }
+    s.info.buffer_vma = pc;
+
+    if (s.info.cap_arch >= 0 && cap_disas_monitor(&s.info, pc, nb_insn)) {
+        monitor_puts(mon, ds->str);
+        return;
+    }
+
+    if (!s.info.print_insn) {
+        monitor_printf(mon, "0x%08" PRIx64
+                       ": Asm output not supported on this arch\n", pc);
+        return;
+    }
+
+    for (i = 0; i < nb_insn; i++) {
+        g_string_append_printf(ds, "0x%08" PRIx64 ":  ", pc);
+        count = s.info.print_insn(pc, &s.info);
+        g_string_append_c(ds, '\n');
+        if (count < 0) {
+            break;
+        }
+        pc += count;
+    }
+
+    monitor_puts(mon, ds->str);
+}

disas/disas.c

@@ -1,6 +1,6 @@
 /* General "disassemble this chunk" code.  Used for debugging. */
 #include "qemu/osdep.h"
-#include "disas/dis-asm.h"
+#include "disas/disas-internal.h"
 #include "elf.h"
 #include "qemu/qemu-print.h"
 #include "disas/disas.h"
@@ -8,11 +8,6 @@
 #include "hw/core/cpu.h"
 #include "exec/memory.h"
 
-typedef struct CPUDebug {
-    struct disassemble_info info;
-    CPUState *cpu;
-} CPUDebug;
-
 /* Filled in by elfload.c.  Simplistic, but will do for now. */
 struct syminfo *syminfos = NULL;
 
@@ -120,7 +115,7 @@ static void initialize_debug(CPUDebug *s)
     s->info.symbol_at_address_func = symbol_at_address;
 }
 
-static void initialize_debug_target(CPUDebug *s, CPUState *cpu)
+void disas_initialize_debug_target(CPUDebug *s, CPUState *cpu)
 {
     initialize_debug(s);
 
@@ -211,7 +206,7 @@ void target_disas(FILE *out, CPUState *cpu, uint64_t code, size_t size)
     int count;
     CPUDebug s;
 
-    initialize_debug_target(&s, cpu);
+    disas_initialize_debug_target(&s, cpu);
     s.info.fprintf_func = fprintf;
     s.info.stream = out;
     s.info.buffer_vma = code;
@@ -242,8 +237,7 @@ void target_disas(FILE *out, CPUState *cpu, uint64_t code, size_t size)
     }
 }
 
-static int G_GNUC_PRINTF(2, 3)
-gstring_printf(FILE *stream, const char *fmt, ...)
+int disas_gstring_printf(FILE *stream, const char *fmt, ...)
 {
     /* We abuse the FILE parameter to pass a GString. */
     GString *s = (GString *)stream;
@@ -273,8 +267,8 @@ char *plugin_disas(CPUState *cpu, uint64_t addr, size_t size)
     CPUDebug s;
     GString *ds = g_string_new(NULL);
 
-    initialize_debug_target(&s, cpu);
-    s.info.fprintf_func = gstring_printf;
+    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;
@@ -339,61 +333,3 @@ const char *lookup_symbol(uint64_t orig_addr)
 
     return symbol;
 }
-
-#if !defined(CONFIG_USER_ONLY)
-
-#include "monitor/monitor.h"
-
-static int
-physical_read_memory(bfd_vma memaddr, bfd_byte *myaddr, int length,
-                     struct disassemble_info *info)
-{
-    CPUDebug *s = container_of(info, CPUDebug, info);
-    MemTxResult res;
-
-    res = address_space_read(s->cpu->as, memaddr, MEMTXATTRS_UNSPECIFIED,
-                             myaddr, length);
-    return res == MEMTX_OK ? 0 : EIO;
-}
-
-/* Disassembler for the monitor.  */
-void monitor_disas(Monitor *mon, CPUState *cpu, uint64_t pc,
-                   int nb_insn, bool is_physical)
-{
-    int count, i;
-    CPUDebug s;
-    g_autoptr(GString) ds = g_string_new("");
-
-    initialize_debug_target(&s, cpu);
-    s.info.fprintf_func = gstring_printf;
-    s.info.stream = (FILE *)ds;  /* abuse this slot */
-
-    if (is_physical) {
-        s.info.read_memory_func = physical_read_memory;
-    }
-    s.info.buffer_vma = pc;
-
-    if (s.info.cap_arch >= 0 && cap_disas_monitor(&s.info, pc, nb_insn)) {
-        monitor_puts(mon, ds->str);
-        return;
-    }
-
-    if (!s.info.print_insn) {
-        monitor_printf(mon, "0x%08" PRIx64
-                       ": Asm output not supported on this arch\n", pc);
-        return;
-    }
-
-    for (i = 0; i < nb_insn; i++) {
-        g_string_append_printf(ds, "0x%08" PRIx64 ":  ", pc);
-        count = s.info.print_insn(pc, &s.info);
-        g_string_append_c(ds, '\n');
-        if (count < 0) {
-            break;
-        }
-        pc += count;
-    }
-
-    monitor_puts(mon, ds->str);
-}
-#endif

disas/meson.build

@@ -12,4 +12,5 @@ common_ss.add(when: 'CONFIG_SPARC_DIS', if_true: files('sparc.c'))
 common_ss.add(when: 'CONFIG_XTENSA_DIS', if_true: files('xtensa.c'))
 common_ss.add(when: capstone, if_true: [files('capstone.c'), capstone])
 
+softmmu_ss.add(files('disas-mon.c'))
 specific_ss.add(files('disas.c'), capstone)