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Fix build without libcapstone

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This commit is contained in:
Takashi Kokubun 2022-12-20 23:48:12 -08:00
parent dfa19a1658
commit e750e1e3ee
1 changed files with 4 additions and 8 deletions
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12
mjit_c.c
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@ -43,11 +43,14 @@
// Fedora: dnf -y install capstone-devel // Fedora: dnf -y install capstone-devel
#ifdef HAVE_LIBCAPSTONE #ifdef HAVE_LIBCAPSTONE
#include <capstone/capstone.h> #include <capstone/capstone.h>
#endif
// Return an array of [address, mnemonic, op_str] // Return an array of [address, mnemonic, op_str]
static VALUE static VALUE
dump_disasm(rb_execution_context_t *ec, VALUE self, VALUE from, VALUE to) dump_disasm(rb_execution_context_t *ec, VALUE self, VALUE from, VALUE to)
{ {
VALUE result = rb_ary_new();
#ifdef HAVE_LIBCAPSTONE
// Prepare for calling cs_disasm // Prepare for calling cs_disasm
static csh handle; static csh handle;
if (cs_open(CS_ARCH_X86, CS_MODE_64, &handle) != CS_ERR_OK) { if (cs_open(CS_ARCH_X86, CS_MODE_64, &handle) != CS_ERR_OK) {
@ -59,7 +62,6 @@ dump_disasm(rb_execution_context_t *ec, VALUE self, VALUE from, VALUE to)
// Call cs_disasm and convert results to a Ruby array // Call cs_disasm and convert results to a Ruby array
cs_insn *insns; cs_insn *insns;
size_t count = cs_disasm(handle, (const uint8_t *)from_addr, to_addr - from_addr, from_addr, 0, &insns); size_t count = cs_disasm(handle, (const uint8_t *)from_addr, to_addr - from_addr, from_addr, 0, &insns);
VALUE result = rb_ary_new_capa(count);
for (size_t i = 0; i < count; i++) { for (size_t i = 0; i < count; i++) {
VALUE vals = rb_ary_new_from_args(3, LONG2NUM(insns[i].address), rb_str_new2(insns[i].mnemonic), rb_str_new2(insns[i].op_str)); VALUE vals = rb_ary_new_from_args(3, LONG2NUM(insns[i].address), rb_str_new2(insns[i].mnemonic), rb_str_new2(insns[i].op_str));
rb_ary_push(result, vals); rb_ary_push(result, vals);
@ -68,15 +70,9 @@ dump_disasm(rb_execution_context_t *ec, VALUE self, VALUE from, VALUE to)
// Free memory used by capstone // Free memory used by capstone
cs_free(insns, count); cs_free(insns, count);
cs_close(&handle); cs_close(&handle);
#endif
return result; return result;
} }
#else
static VALUE
mjit_disasm(VALUE self, VALUE from, VALUE to)
{
return rb_ary_new();
}
#endif
#include "mjit_c.rbinc" #include "mjit_c.rbinc"