right, going to bed

1 files changed, 40 insertions, 0 deletions

diff --git a/lib/x86/dis-x86.inc.h b/lib/x86/dis-x86.inc.h
new file mode 100644
index 0000000..83645ec
--- /dev/null
+++ b/lib/x86/dis-x86.inc.h
@@ -0,0 +1,40 @@
+static void P(dis_onebyte)(tdis_ctx ctx) {
+    uint8_t *ptr = ctx->ptr;
+    uint8_t byte1 = *ptr++;
+    uint8_t bits = onebyte_bits[byte1];
+    uint8_t byte2 = 0;
+    if (byte1 == 0x0f) {
+        byte2 = *ptr++;
+        bits = _0f_bits[byte2];
+        if (byte2 == 0x39) {
+            XXX
+        } else if (byte2 == 0x3b) {
+            XXX
+        }
+    } else if ((byte1 & 0xd8) == 0xd8) {
+        *ptr++;
+        bits = I_MODA;
+    }
+    // get modrm
+    int mod, rm, mrlow;
+    if (bits & I_MOD) {
+        uint8_t modrm = *ptr++;
+        mod = modrm >> 6;
+        rm = modrm >> 3 & 7;
+        mrlow = modrm & 7;
+        if (rm == 4) {
+            /* sib */
+            ptr++;
+        }
+    }
+    if (bits & I_PFX) {
+        // this could affect opcode size etc... then we restart
+
+    }
+};
+
+static void P(dis_x86)(tdis_ctx ctx) {
+    void *orig = ctx->ptr;
+    P(dis_onebyte)(ctx);
+    ctx->op_size = ctx->ptr - orig;
+}