improve test; thumb2 fixes

1 files changed, 48 insertions, 0 deletions

diff --git a/test/test-transform-dis.c b/test/test-transform-dis.c
new file mode 100644
index 0000000..d7c44d6
--- /dev/null
+++ b/test/test-transform-dis.c
@@ -0,0 +1,48 @@
+#include <stdio.h>
+#define TRANSFORM_DIS_VERBOSE 1
+#include "transform-dis.c"
+#include <stdlib.h>
+int main(UNUSED int argc, char **argv) {
+    static uint8_t in[1048576];
+    UNUSED size_t size = fread(in, 1, sizeof(in), stdin);
+    int patch_size = atoi(argv[1]);
+    int thumb = atoi(argv[2]);
+    uint8_t out[patch_size * 10];
+    int offsets[patch_size + 1];
+    void *rewritten_ptr = out;
+    printf("\n#if 0\n");
+    int ret = transform_dis_main(
+        in,
+        &rewritten_ptr,
+        0x10000,
+        0x10000 + patch_size,
+        thumb,
+        offsets);
+    printf("=> %d\n", ret);
+    printf("#endif\n");
+    int print_out_idx = 0;
+    int print_in_idx = 0;
+    if (!ret) {
+        printf("// total length: %zd\n", (uint8_t *) rewritten_ptr - out);
+        for(int ii = 0; ii <= patch_size; ii++) {
+            int oi = offsets[ii];
+            if(oi != -1) {
+                int in_size = ii - print_in_idx;
+                int out_size = oi - print_out_idx;
+                if (in_size != out_size || memcmp(out + print_out_idx, in + print_in_idx, in_size)) {
+                    printf("at_%x: nop; nop; nop\n", print_in_idx);
+                    printf("   .byte ");
+                    while(print_in_idx++ < ii)
+                        printf("0x%02x%s", in[print_in_idx-1], print_in_idx == ii ? "" : ", ");
+                    printf("\nnop //     -->\n   .byte ");
+                    while(print_out_idx++ < oi)
+                        printf("0x%02x%s", out[print_out_idx-1], print_out_idx == oi ? "" : ", ");
+                    printf("\n");
+                }
+                print_in_idx = ii;
+                print_out_idx = oi;
+                printf("/* 0x%x: 0x%x */\n", ii, oi);
+            }
+        }
+    }
+}