Align 64-bit ints on 8-byte boundaries when on the stack.

4 files changed, 12 insertions, 0 deletions

diff --git a/call_x64.h b/call_x64.h
index 8fd89bb..e0acdee 100644
--- a/call_x64.h
+++ b/call_x64.h
@@ -392,6 +392,9 @@ static void add_int(Dst_DECL, const struct ctype* ct, struct reg_alloc* reg, int
 #endif
 
     else if (is_int64) {
+        if (reg->off % 8 != 0) {
+            reg->off += 8 - (reg->off % 8);
+        }
         dasm_put(Dst, 313, reg->off);
         reg->off += 8;
     } else {
diff --git a/call_x64win.h b/call_x64win.h
index 3362af1..99306b8 100644
--- a/call_x64win.h
+++ b/call_x64win.h
@@ -387,6 +387,9 @@ static void add_int(Dst_DECL, const struct ctype* ct, struct reg_alloc* reg, int
 #endif
 
     else if (is_int64) {
+        if (reg->off % 8 != 0) {
+            reg->off += 8 - (reg->off % 8);
+        }
         dasm_put(Dst, 285, reg->off);
         reg->off += 8;
     } else {
diff --git a/call_x86.dasc b/call_x86.dasc
index 573b448..d7a7c4c 100644
--- a/call_x86.dasc
+++ b/call_x86.dasc
@@ -508,6 +508,9 @@ static void add_int(Dst_DECL, const struct ctype* ct, struct reg_alloc* reg, int
 #endif
 
     else if (is_int64) {
+        if (reg->off % 8 != 0) {
+            reg->off += 8 - (reg->off % 8);
+        }
         |.if X64
         | mov [rsp + reg->off], rax
         |.else
diff --git a/call_x86.h b/call_x86.h
index a5c8855..3142aba 100644
--- a/call_x86.h
+++ b/call_x86.h
@@ -376,6 +376,9 @@ static void add_int(Dst_DECL, const struct ctype* ct, struct reg_alloc* reg, int
 #endif
 
     else if (is_int64) {
+        if (reg->off % 8 != 0) {
+            reg->off += 8 - (reg->off % 8);
+        }
         dasm_put(Dst, 248, reg->off, reg->off + 4);
         reg->off += 8;
     } else {