From 09af190aa9a7b41057547114c7fa53ce4d4cdc77 Mon Sep 17 00:00:00 2001
From: Curle <curle@gemwire.uk>
Date: Sun, 23 Apr 2023 19:20:09 +0100
Subject: [PATCH] Fix rsp not being escaped properly in the Win32 GAS ASM
 generator

---
 src/assemble/ASMAssembler.c | 4 ++--
 tests/print.em              | 1 +
 tests/printf.er             | 2 +-
 3 files changed, 4 insertions(+), 3 deletions(-)
 create mode 100644 tests/print.em

diff --git a/src/assemble/ASMAssembler.c b/src/assemble/ASMAssembler.c
index b60f724..2384aad 100644
--- a/src/assemble/ASMAssembler.c
+++ b/src/assemble/ASMAssembler.c
@@ -702,13 +702,13 @@ static int AsCall(struct SymbolTableEntry* Entry, int Args) {
     printf("\t\t\tFunction returns into %s\n", Registers[OutRegister]);
 
     // Allocate shadow space
-    fprintf(OutputFile, "\taddq\t$-32, %rsp\n");
+    fprintf(OutputFile, "\taddq\t$-32, %%rsp\n");
     fprintf(OutputFile, "\tcall\t%s\n", Entry->Name);
     // Deallocate arguments and stack space.
     if (Args > 4)
         fprintf(OutputFile, "\taddq\t$%d, %%rsp\n", (8 * (Args - 4)) + 32);
     else
-        fprintf(OutputFile, "\taddq\t$32, %rsp\n");
+        fprintf(OutputFile, "\taddq\t$32, %%rsp\n");
 
     fprintf(OutputFile, "\tmovq\t%%rax, %s\n", Registers[OutRegister]);
 
diff --git a/tests/print.em b/tests/print.em
new file mode 100644
index 0000000..a96efb1
--- /dev/null
+++ b/tests/print.em
@@ -0,0 +1 @@
+int :: printf(char* fmt);
\ No newline at end of file
diff --git a/tests/printf.er b/tests/printf.er
index 9b173a2..4596c9f 100644
--- a/tests/printf.er
+++ b/tests/printf.er
@@ -1,4 +1,4 @@
-import "print.em"
+import "tests/print.em"
 
 int :: main () {
     printf("%s\r\n", "hi there");