Fix possible stack corruption in arm64 C calls

soxfox42 · soxfox42 · commit a336eca921f6 · 2024-09-25T20:19:58.000+10:00
diff --git a/source/backends/arm64.d b/source/backends/arm64.d
@@ -426,6 +426,7 @@ class BackendARM64 : CompilerBackend {
 						output ~= format("ldr x%d, [x19, #-8]!\n", reg);
 					}
 				
+					output ~= "and sp, x20, ~0xf\n";
 					output ~= format("bl %s\n", ExternSymbol(word.symbolName));
 
 					if (!word.isVoid) {

Original file line number	Diff line number	Diff line change
`@@ -426,6 +426,7 @@ class BackendARM64 : CompilerBackend {`
`426`	`426`	`output ~= format("ldr x%d, [x19, #-8]!\n", reg);`
`427`	`427`	`}`
`428`	`428`
	`429`	`+ output ~= "and sp, x20, ~0xf\n";`
`429`	`430`	`output ~= format("bl %s\n", ExternSymbol(word.symbolName));`
`430`	`431`
`431`	`432`	`if (!word.isVoid) {`