[WOW64] More work on the PE wow64 build (#2518)

* [WOW64] More work on the PE wow64 build

* added a TODO

1 files changed, 21 insertions, 0 deletions

diff --git a/src/tools/perfmap.c b/src/tools/perfmap.c
new file mode 100644
index 00000000..c3a9d0e3
--- /dev/null
+++ b/src/tools/perfmap.c
@@ -0,0 +1,21 @@
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
+#include <assert.h>
+
+#include "debug.h"
+#include "box64context.h"
+#include "perfmap.h"
+#include "elfloader.h"
+
+void writePerfMap(uintptr_t func_addr, uintptr_t code_addr, size_t code_size, const char* inst_name)
+{
+    char pbuf[128];
+    uint64_t sz = 0;
+    uintptr_t start = 0;
+    const char* symbname = FindNearestSymbolName(FindElfAddress(my_context, func_addr), (void*)func_addr, &start, &sz);
+    snprintf(pbuf, sizeof(pbuf), "0x%lx %ld %s:%s\n", code_addr, code_size, symbname, inst_name);
+    write(BOX64ENV(dynarec_perf_map_fd), pbuf, strlen(pbuf));
+}