Provide convenient way to disable CFI stuff for old/broken assemblers.

Use it for Darwin.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44818 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 76 insertions, 70 deletions

diff --git a/lib/Target/X86/X86JITInfo.cpp b/lib/Target/X86/X86JITInfo.cpp
index 9aa10d5..5f88da5 100644
--- a/lib/Target/X86/X86JITInfo.cpp
+++ b/lib/Target/X86/X86JITInfo.cpp
@@ -47,6 +47,12 @@ static TargetJITInfo::JITCompilerFn JITCompilerFunction;
 #define GETASMPREFIX(X) GETASMPREFIX2(X)
 #define ASMPREFIX GETASMPREFIX(__USER_LABEL_PREFIX__)
 
+#if defined(__APPLE__)
+# define CFI(x)
+#else
+# define CFI(x) x
+#endif
+
 // Provide a wrapper for X86CompilationCallback2 that saves non-traditional
 // callee saved registers, for the fastcc calling convention.
 extern "C" {
@@ -58,27 +64,27 @@ extern "C" {
     ".align 8\n"
     ".globl " ASMPREFIX "X86CompilationCallback\n"
   ASMPREFIX "X86CompilationCallback:\n"
-//    ".cfi_startproc\n"
+    CFI(".cfi_startproc\n")
     // Save RBP
     "pushq   %rbp\n"
-//    ".cfi_def_cfa_offset 16\n"
-//    ".cfi_offset %rbp, -16\n"
+    CFI(".cfi_def_cfa_offset 16\n")
+    CFI(".cfi_offset %rbp, -16\n")
     // Save RSP
     "movq    %rsp, %rbp\n"
-//    ".cfi_def_cfa_register %rbp\n"
+    CFI(".cfi_def_cfa_register %rbp\n")
     // Save all int arg registers
     "pushq   %rdi\n"
-//    ".cfi_rel_offset %rdi, 0\n"
+    CFI(".cfi_rel_offset %rdi, 0\n")
     "pushq   %rsi\n"
-//    ".cfi_rel_offset %rsi, 8\n"
+    CFI(".cfi_rel_offset %rsi, 8\n")
     "pushq   %rdx\n"
-//    ".cfi_rel_offset %rdx, 16\n"
+    CFI(".cfi_rel_offset %rdx, 16\n")
     "pushq   %rcx\n"
-//    ".cfi_rel_offset %rcx, 24\n"
+    CFI(".cfi_rel_offset %rcx, 24\n")
     "pushq   %r8\n"
-//    ".cfi_rel_offset %r8, 32\n"
+    CFI(".cfi_rel_offset %r8, 32\n")
     "pushq   %r9\n"
-//    ".cfi_rel_offset %r9, 40\n"
+    CFI(".cfi_rel_offset %r9, 40\n")
     // Align stack on 16-byte boundary. ESP might not be properly aligned
     // (8 byte) if this is called from an indirect stub.
     "andq    $-16, %rsp\n"
@@ -107,35 +113,35 @@ extern "C" {
     "movaps  (%rsp), %xmm0\n"
     // Restore RSP
     "movq    %rbp, %rsp\n"
-//    ".cfi_def_cfa_register esp\n"
+    CFI(".cfi_def_cfa_register esp\n")
     // Restore all int arg registers
     "subq    $48, %rsp\n"
-//    ".cfi_adjust_cfa_offset 48\n"
+    CFI(".cfi_adjust_cfa_offset 48\n")
     "popq    %r9\n"
-//    ".cfi_adjust_cfa_offset -8\n"
-//    ".cfi_restore %r9\n"
+    CFI(".cfi_adjust_cfa_offset -8\n")
+    CFI(".cfi_restore %r9\n")
     "popq    %r8\n"
-//    ".cfi_adjust_cfa_offset -8\n"
-//    ".cfi_restore %r8\n"
+    CFI(".cfi_adjust_cfa_offset -8\n")
+    CFI(".cfi_restore %r8\n")
     "popq    %rcx\n"
-//    ".cfi_adjust_cfa_offset -8\n"
-//    ".cfi_restore %rcx\n"
+    CFI(".cfi_adjust_cfa_offset -8\n")
+    CFI(".cfi_restore %rcx\n")
     "popq    %rdx\n"
-//    ".cfi_adjust_cfa_offset -8\n"
-//    ".cfi_restore %rdx\n"
+    CFI(".cfi_adjust_cfa_offset -8\n")
+    CFI(".cfi_restore %rdx\n")
     "popq    %rsi\n"
-//    ".cfi_adjust_cfa_offset -8\n"
-//    ".cfi_restore %rsi\n"
+    CFI(".cfi_adjust_cfa_offset -8\n")
+    CFI(".cfi_restore %rsi\n")
     "popq    %rdi\n"
-//    ".cfi_adjust_cfa_offset -8\n"
-//    ".cfi_restore %rdi\n"
+    CFI(".cfi_adjust_cfa_offset -8\n")
+    CFI(".cfi_restore %rdi\n")
     // Restore RBP
     "popq    %rbp\n"
-//    ".cfi_adjust_cfa_offset -8\n"
-//    ".cfi_restore %rbp\n"
+    CFI(".cfi_adjust_cfa_offset -8\n")
+    CFI(".cfi_restore %rbp\n")
     "ret\n"
-//    ".cfi_endproc\n"
-      );
+    CFI(".cfi_endproc\n")
+  );
 #elif defined(__i386__) || defined(i386) || defined(_M_IX86)
 #ifndef _MSC_VER
   void X86CompilationCallback(void);
@@ -144,18 +150,18 @@ extern "C" {
     ".align 8\n"
     ".globl " ASMPREFIX  "X86CompilationCallback\n"
   ASMPREFIX "X86CompilationCallback:\n"
-//    ".cfi_startproc\n"
+    CFI(".cfi_startproc\n")
     "pushl   %ebp\n"
-//    ".cfi_def_cfa_offset 8\n"
-//    ".cfi_offset %ebp, -8\n"
+    CFI(".cfi_def_cfa_offset 8\n")
+    CFI(".cfi_offset %ebp, -8\n")
     "movl    %esp, %ebp\n"    // Standard prologue
-//    ".cfi_def_cfa_register %ebp\n"
+    CFI(".cfi_def_cfa_register %ebp\n")
     "pushl   %eax\n"
-//    ".cfi_rel_offset %eax, 0\n"
+    CFI(".cfi_rel_offset %eax, 0\n")
     "pushl   %edx\n"          // Save EAX/EDX/ECX
-//    ".cfi_rel_offset %edx, 4\n"
+    CFI(".cfi_rel_offset %edx, 4\n")
     "pushl   %ecx\n"
-//    ".cfi_rel_offset %ecx, 8\n"
+    CFI(".cfi_rel_offset %ecx, 8\n")
 #if defined(__APPLE__)
     "andl    $-16, %esp\n"    // Align ESP on 16-byte boundary
 #endif
@@ -165,24 +171,24 @@ extern "C" {
     "movl    %ebp, (%esp)\n"
     "call    " ASMPREFIX "X86CompilationCallback2\n"
     "movl    %ebp, %esp\n"    // Restore ESP
-//    ".cfi_def_cfa_register %esp\n"
+    CFI(".cfi_def_cfa_register %esp\n")
     "subl    $12, %esp\n"
-//    ".cfi_adjust_cfa_offset 12\n"
+    CFI(".cfi_adjust_cfa_offset 12\n")
     "popl    %ecx\n"
-//    ".cfi_adjust_cfa_offset -4\n"
-//    ".cfi_restore %ecx\n"
+    CFI(".cfi_adjust_cfa_offset -4\n")
+    CFI(".cfi_restore %ecx\n")
     "popl    %edx\n"
-//    ".cfi_adjust_cfa_offset -4\n"
-//    ".cfi_restore %edx\n"
+    CFI(".cfi_adjust_cfa_offset -4\n")
+    CFI(".cfi_restore %edx\n")
     "popl    %eax\n"
-//    ".cfi_adjust_cfa_offset -4\n"
-//    ".cfi_restore %eax\n"
+    CFI(".cfi_adjust_cfa_offset -4\n")
+    CFI(".cfi_restore %eax\n")
     "popl    %ebp\n"
-//    ".cfi_adjust_cfa_offset -4\n"
-//    ".cfi_restore %ebp\n"
+    CFI(".cfi_adjust_cfa_offset -4\n")
+    CFI(".cfi_restore %ebp\n")
     "ret\n"
-//    ".cfi_endproc\n"
-      );
+    CFI(".cfi_endproc\n")
+  );
 
   // Same as X86CompilationCallback but also saves XMM argument registers.
   void X86CompilationCallback_SSE(void);
@@ -191,18 +197,18 @@ extern "C" {
     ".align 8\n"
     ".globl " ASMPREFIX  "X86CompilationCallback_SSE\n"
   ASMPREFIX "X86CompilationCallback_SSE:\n"
-//    ".cfi_startproc\n"
+    CFI(".cfi_startproc\n")
     "pushl   %ebp\n"
-//    ".cfi_def_cfa_offset 8\n"
-//    ".cfi_offset %ebp, -8\n"
+    CFI(".cfi_def_cfa_offset 8\n")
+    CFI(".cfi_offset %ebp, -8\n")
     "movl    %esp, %ebp\n"    // Standard prologue
-//    ".cfi_def_cfa_register %ebp\n"
+    CFI(".cfi_def_cfa_register %ebp\n")
     "pushl   %eax\n"
-//    ".cfi_rel_offset %eax, 0\n"
+    CFI(".cfi_rel_offset %eax, 0\n")
     "pushl   %edx\n"          // Save EAX/EDX/ECX
-//    ".cfi_rel_offset %edx, 4\n"
+    CFI(".cfi_rel_offset %edx, 4\n")
     "pushl   %ecx\n"
-//    ".cfi_rel_offset %ecx, 8\n"
+    CFI(".cfi_rel_offset %ecx, 8\n")
     "andl    $-16, %esp\n"    // Align ESP on 16-byte boundary
     // Save all XMM arg registers
     "subl    $64, %esp\n"
@@ -220,32 +226,32 @@ extern "C" {
     "call    " ASMPREFIX "X86CompilationCallback2\n"
     "addl    $16, %esp\n"
     "movaps  48(%esp), %xmm3\n"
-//    ".cfi_restore %xmm3\n"
+    CFI(".cfi_restore %xmm3\n")
     "movaps  32(%esp), %xmm2\n"
-//    ".cfi_restore %xmm2\n"
+    CFI(".cfi_restore %xmm2\n")
     "movaps  16(%esp), %xmm1\n"
-//    ".cfi_restore %xmm1\n"
+    CFI(".cfi_restore %xmm1\n")
     "movaps  (%esp), %xmm0\n"
-//    ".cfi_restore %xmm0\n"
+    CFI(".cfi_restore %xmm0\n")
     "movl    %ebp, %esp\n"    // Restore ESP
-//    ".cfi_def_cfa_register esp\n"
+    CFI(".cfi_def_cfa_register esp\n")
     "subl    $12, %esp\n"
-//    ".cfi_adjust_cfa_offset 12\n"
+    CFI(".cfi_adjust_cfa_offset 12\n")
     "popl    %ecx\n"
-//    ".cfi_adjust_cfa_offset -4\n"
-//    ".cfi_restore %ecx\n"
+    CFI(".cfi_adjust_cfa_offset -4\n")
+    CFI(".cfi_restore %ecx\n")
     "popl    %edx\n"
-//    ".cfi_adjust_cfa_offset -4\n"
-//    ".cfi_restore %edx\n"
+    CFI(".cfi_adjust_cfa_offset -4\n")
+    CFI(".cfi_restore %edx\n")
     "popl    %eax\n"
-//    ".cfi_adjust_cfa_offset -4\n"
-//    ".cfi_restore %eax\n"
+    CFI(".cfi_adjust_cfa_offset -4\n")
+    CFI(".cfi_restore %eax\n")
     "popl    %ebp\n"
-//    ".cfi_adjust_cfa_offset -4\n"
-//    ".cfi_restore %ebp\n"
+    CFI(".cfi_adjust_cfa_offset -4\n")
+    CFI(".cfi_restore %ebp\n")
     "ret\n"
-//    ".cfi_endproc\n"
-      );
+    CFI(".cfi_endproc\n")
+  );
 #else
   void X86CompilationCallback2(void);