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
This commit is contained in:
Anton Korobeynikov 2007-12-10 23:04:38 +00:00
parent f286f6fd93
commit 5f68287605

View File

@ -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);