x86 inline asm support

Author: nbdd0121

src/inline_asm.rs

@@ -492,6 +492,10 @@ impl<'tcx> InlineAssemblyGenerator<'_, 'tcx> {
 
     fn prologue(generated_asm: &mut String, arch: InlineAsmArch) {
         match arch {
+            InlineAsmArch::X86 => {
+                generated_asm.push_str("    push ebp\n");
+                generated_asm.push_str("    mov ebp,edi\n");
+            }
             InlineAsmArch::X86_64 => {
                 generated_asm.push_str("    push rbp\n");
                 generated_asm.push_str("    mov rbp,rdi\n");
@@ -502,6 +506,10 @@ impl<'tcx> InlineAssemblyGenerator<'_, 'tcx> {
 
     fn epilogue(generated_asm: &mut String, arch: InlineAsmArch) {
         match arch {
+            InlineAsmArch::X86 => {
+                generated_asm.push_str("    pop ebp\n");
+                generated_asm.push_str("    ret\n");
+            }
             InlineAsmArch::X86_64 => {
                 generated_asm.push_str("    pop rbp\n");
                 generated_asm.push_str("    ret\n");
@@ -512,7 +520,7 @@ impl<'tcx> InlineAssemblyGenerator<'_, 'tcx> {
 
     fn epilogue_noreturn(generated_asm: &mut String, arch: InlineAsmArch) {
         match arch {
-            InlineAsmArch::X86_64 => {
+            InlineAsmArch::X86 | InlineAsmArch::X86_64 => {
                 generated_asm.push_str("    ud2\n");
             }
             _ => unimplemented!("epilogue_noreturn for {:?}", arch),
@@ -526,6 +534,11 @@ impl<'tcx> InlineAssemblyGenerator<'_, 'tcx> {
         offset: Size,
     ) {
         match arch {
+            InlineAsmArch::X86 => {
+                write!(generated_asm, "    mov [ebp+0x{:x}], ", offset.bytes()).unwrap();
+                reg.emit(generated_asm, InlineAsmArch::X86, None).unwrap();
+                generated_asm.push('\n');
+            }
             InlineAsmArch::X86_64 => {
                 write!(generated_asm, "    mov [rbp+0x{:x}], ", offset.bytes()).unwrap();
                 reg.emit(generated_asm, InlineAsmArch::X86_64, None).unwrap();
@@ -542,6 +555,11 @@ impl<'tcx> InlineAssemblyGenerator<'_, 'tcx> {
         offset: Size,
     ) {
         match arch {
+            InlineAsmArch::X86 => {
+                generated_asm.push_str("    mov ");
+                reg.emit(generated_asm, InlineAsmArch::X86, None).unwrap();
+                writeln!(generated_asm, ", [ebp+0x{:x}]", offset.bytes()).unwrap();
+            }
             InlineAsmArch::X86_64 => {
                 generated_asm.push_str("    mov ");
                 reg.emit(generated_asm, InlineAsmArch::X86_64, None).unwrap();