disas: Push const down through host disassembly

Reviewed-by: Joelle van Dyne <j@getutm.app>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

disas.c

@@ -299,10 +299,8 @@ char *plugin_disas(CPUState *cpu, uint64_t addr, size_t size)
 }
 
 /* Disassemble this for me please... (debugging). */
-void disas(FILE *out, const void *ccode, unsigned long size)
+void disas(FILE *out, const void *code, unsigned long size)
 {
-    /* TODO: Push constness through the disas backends. */
-    void *code = (void *)ccode;
     uintptr_t pc;
     int count;
     CPUDebug s;

disas/capstone.c

@@ -229,7 +229,7 @@ bool cap_disas_target(disassemble_info *info, uint64_t pc, size_t size)
 }
 
 /* Disassemble SIZE bytes at CODE for the host.  */
-bool cap_disas_host(disassemble_info *info, void *code, size_t size)
+bool cap_disas_host(disassemble_info *info, const void *code, size_t size)
 {
     csh handle;
     const uint8_t *cbuf;

include/disas/dis-asm.h

@@ -358,7 +358,7 @@ typedef struct disassemble_info {
     (bfd_vma addr, struct disassemble_info * info);
 
   /* These are for buffer_read_memory.  */
-  bfd_byte *buffer;
+  const bfd_byte *buffer;
   bfd_vma buffer_vma;
   int buffer_length;
 
@@ -462,7 +462,7 @@ int print_insn_rx(bfd_vma, disassemble_info *);
 
 #ifdef CONFIG_CAPSTONE
 bool cap_disas_target(disassemble_info *info, uint64_t pc, size_t size);
-bool cap_disas_host(disassemble_info *info, void *code, size_t size);
+bool cap_disas_host(disassemble_info *info, const void *code, size_t size);
 bool cap_disas_monitor(disassemble_info *info, uint64_t pc, int count);
 bool cap_disas_plugin(disassemble_info *info, uint64_t pc, size_t size);
 #else