[RFC PATCH 1/2] disas: Move softmmu specific code to separate file

[Thomas Huth <thuth@redhat.com>]

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.

While doing the movement, change the type of the "pc" parameter of
the monitor_disas() function to "hwaddr" instead of "target_ulong",
so we can add the file to the generic softmmu_ss source set instead
of the specific_ss source set.

Signed-off-by: Thomas Huth <thuth@redhat.com>
---
 disas/disas-internal.h | 20 +++++++++++
 include/disas/disas.h  |  6 ++--
 disas.c                | 76 ++++--------------------------------------
 disas/disas-mon.c      | 65 ++++++++++++++++++++++++++++++++++++
 disas/meson.build      |  2 ++
 5 files changed, 96 insertions(+), 73 deletions(-)
 create mode 100644 disas/disas-internal.h
 create mode 100644 disas/disas-mon.c

diff --git a/disas/disas-internal.h b/disas/disas-internal.h
new file mode 100644
index 0000000000..354c01307b
--- /dev/null
+++ b/disas/disas-internal.h
@@ -0,0 +1,20 @@
+/*
+ * 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
diff --git a/include/disas/disas.h b/include/disas/disas.h
index d363e95ede..6c04428620 100644
--- a/include/disas/disas.h
+++ b/include/disas/disas.h
@@ -11,15 +11,15 @@ void disas(FILE *out, const void *code, unsigned long size);
 void target_disas(FILE *out, CPUState *cpu, target_ulong code,
                   target_ulong size);
 
-void monitor_disas(Monitor *mon, CPUState *cpu,
-                   target_ulong pc, int nb_insn, int is_physical);
-
 char *plugin_disas(CPUState *cpu, uint64_t addr, size_t size);
 
 /* Look up symbol for debugging purpose.  Returns "" if unknown. */
 const char *lookup_symbol(target_ulong orig_addr);
 #endif
 
+void monitor_disas(Monitor *mon, CPUState *cpu,
+                   hwaddr pc, int nb_insn, int is_physical);
+
 struct syminfo;
 struct elf32_sym;
 struct elf64_sym;
diff --git a/disas.c b/disas.c
index b087c12c47..4f4a07d611 100644
--- a/disas.c
+++ b/disas.c
@@ -1,17 +1,12 @@
 /* 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"
 #include "disas/capstone.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;
 
@@ -119,7 +114,7 @@ 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, target_ulong code,
     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;
@@ -241,8 +236,7 @@ void target_disas(FILE *out, CPUState *cpu, target_ulong code,
     }
 }
 
-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;
@@ -272,8 +266,8 @@ 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;
@@ -338,61 +332,3 @@ const char *lookup_symbol(target_ulong 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,
-                   target_ulong pc, int nb_insn, int 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" TARGET_FMT_lx
-                       ": Asm output not supported on this arch\n", pc);
-        return;
-    }
-
-    for (i = 0; i < nb_insn; i++) {
-        g_string_append_printf(ds, "0x" TARGET_FMT_lx ":  ", 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
diff --git a/disas/disas-mon.c b/disas/disas-mon.c
new file mode 100644
index 0000000000..31b7413c40
--- /dev/null
+++ b/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,
+                   hwaddr pc, int nb_insn, int 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" HWADDR_FMT_plx
+                       ": Asm output not supported on this arch\n", pc);
+        return;
+    }
+
+    for (i = 0; i < nb_insn; i++) {
+        g_string_append_printf(ds, "0x" HWADDR_FMT_plx ":  ", 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);
+}
diff --git a/disas/meson.build b/disas/meson.build
index c865bdd882..ca6dd81ecf 100644
--- a/disas/meson.build
+++ b/disas/meson.build
@@ -11,3 +11,5 @@ common_ss.add(when: 'CONFIG_SH4_DIS', if_true: files('sh4.c'))
 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'))
+
+softmmu_ss.add(files('disas-mon.c'))
-- 
2.31.1