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[LDC] compiler-rt: Misc. fixes/tweaks for builtins lib on Windows
* Include ASM files when using MSVC-compatible clang-cl.exe as C compiler (and its assembler supporting AT&T syntax). * Disable buffer overflow checks to prevent dependencies on special MS C symbols. => /GS- * Use `/Zl` to prevent dragging in libcmt.lib. * Mark all i386 ASM files as SafeSEH-compatible on Win32.
1 parent 69b8ba6 commit ae0d467

18 files changed

+62
-5
lines changed

‎compiler-rt/lib/builtins/CMakeLists.txt

Lines changed: 11 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -303,7 +303,7 @@ set(x86_80_BIT_SOURCES
303303
powixf2.c
304304
)
305305

306-
if (NOT MSVC)
306+
if (NOT CMAKE_ASM_COMPILER_ID MATCHES "MSVC")
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set(x86_64_SOURCES
308308
${GENERIC_SOURCES}
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${GENERIC_TF_SOURCES}
@@ -314,7 +314,7 @@ if (NOT MSVC)
314314
x86_64/floatundisf.S
315315
)
316316

317-
if (NOT ANDROID)
317+
if (NOT ANDROID AND NOT MSVC)
318318
set(x86_64_SOURCES
319319
${x86_64_SOURCES}
320320
${x86_80_BIT_SOURCES}
@@ -351,7 +351,7 @@ if (NOT MSVC)
351351
i386/umoddi3.S
352352
)
353353

354-
if (NOT ANDROID)
354+
if (NOT ANDROID AND NOT MSVC)
355355
set(i386_SOURCES
356356
${i386_SOURCES}
357357
${x86_80_BIT_SOURCES}
@@ -367,7 +367,7 @@ if (NOT MSVC)
367367
i386/chkstk2.S
368368
)
369369
endif()
370-
else () # MSVC
370+
else () # MSVC assembler
371371
# Use C versions of functions when building on MSVC
372372
# MSVC's assembler takes Intel syntax, not AT&T syntax.
373373
# Also use only MSVC compilable builtin implementations.
@@ -378,7 +378,13 @@ else () # MSVC
378378
x86_64/floatdisf.c
379379
)
380380
set(i386_SOURCES ${GENERIC_SOURCES} ${x86_ARCH_SOURCES})
381-
endif () # if (NOT MSVC)
381+
endif ()
382+
383+
if (MSVC)
384+
set_source_files_properties(
385+
${x86_64_SOURCES} ${i386_SOURCES}
386+
PROPERTIES COMPILE_FLAGS "/GS- /Zl")
387+
endif()
382388

383389

384390
# builtin support for Targets that have Arm state or have Thumb2

‎compiler-rt/lib/builtins/i386/ashldi3.S

Lines changed: 3 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -3,6 +3,7 @@
33
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
44

55
#include "../assembly.h"
6+
#include "safeseh.h"
67

78
// di_int __ashldi3(di_int input, int count);
89

@@ -17,6 +18,7 @@
1718
#ifdef __SSE2__
1819

1920
.text
21+
WIN32_SAFE_SEH_HEADER
2022
.balign 4
2123
DEFINE_COMPILERRT_FUNCTION(__ashldi3)
2224
movd 12(%esp), %xmm2 // Load count
@@ -37,6 +39,7 @@ END_COMPILERRT_FUNCTION(__ashldi3)
3739
#else // Use GPRs instead of SSE2 instructions, if they aren't available.
3840

3941
.text
42+
WIN32_SAFE_SEH_HEADER
4043
.balign 4
4144
DEFINE_COMPILERRT_FUNCTION(__ashldi3)
4245
movl 12(%esp), %ecx // Load count

‎compiler-rt/lib/builtins/i386/ashrdi3.S

Lines changed: 3 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -3,13 +3,15 @@
33
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
44

55
#include "../assembly.h"
6+
#include "safeseh.h"
67

78
// di_int __ashrdi3(di_int input, int count);
89

910
#ifdef __i386__
1011
#ifdef __SSE2__
1112

1213
.text
14+
WIN32_SAFE_SEH_HEADER
1315
.balign 4
1416
DEFINE_COMPILERRT_FUNCTION(__ashrdi3)
1517
movd 12(%esp), %xmm2 // Load count
@@ -47,6 +49,7 @@ END_COMPILERRT_FUNCTION(__ashrdi3)
4749
#else // Use GPRs instead of SSE2 instructions, if they aren't available.
4850

4951
.text
52+
WIN32_SAFE_SEH_HEADER
5053
.balign 4
5154
DEFINE_COMPILERRT_FUNCTION(__ashrdi3)
5255
movl 12(%esp), %ecx // Load count

‎compiler-rt/lib/builtins/i386/chkstk.S

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -3,6 +3,7 @@
33
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
44

55
#include "../assembly.h"
6+
#include "safeseh.h"
67

78
// _chkstk routine
89
// This routine is windows specific
@@ -11,6 +12,7 @@
1112
#ifdef __i386__
1213

1314
.text
15+
WIN32_SAFE_SEH_HEADER
1416
.balign 4
1517
DEFINE_COMPILERRT_FUNCTION(__chkstk_ms)
1618
push %ecx

‎compiler-rt/lib/builtins/i386/chkstk2.S

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -3,6 +3,7 @@
33
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
44

55
#include "../assembly.h"
6+
#include "safeseh.h"
67

78
#ifdef __i386__
89

@@ -12,6 +13,7 @@
1213
// http://msdn.microsoft.com/en-us/library/ms648426.aspx
1314

1415
.text
16+
WIN32_SAFE_SEH_HEADER
1517
.balign 4
1618
DEFINE_COMPILERRT_FUNCTION(_alloca) // _chkstk and _alloca are the same function
1719
DEFINE_COMPILERRT_FUNCTION(__chkstk)

‎compiler-rt/lib/builtins/i386/divdi3.S

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -3,6 +3,7 @@
33
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
44

55
#include "../assembly.h"
6+
#include "safeseh.h"
67

78
// di_int __divdi3(di_int a, di_int b);
89

@@ -20,6 +21,7 @@
2021
#ifdef __i386__
2122

2223
.text
24+
WIN32_SAFE_SEH_HEADER
2325
.balign 4
2426
DEFINE_COMPILERRT_FUNCTION(__divdi3)
2527

‎compiler-rt/lib/builtins/i386/floatdidf.S

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -3,6 +3,7 @@
33
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
44

55
#include "../assembly.h"
6+
#include "safeseh.h"
67

78
// double __floatdidf(du_int a);
89

@@ -21,6 +22,7 @@ twop32:
2122
#define REL_ADDR(_a) (_a)-0b(%eax)
2223

2324
.text
25+
WIN32_SAFE_SEH_HEADER
2426
.balign 4
2527
DEFINE_COMPILERRT_FUNCTION(__floatdidf)
2628
cvtsi2sd 8(%esp), %xmm1

‎compiler-rt/lib/builtins/i386/floatdisf.S

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -3,6 +3,7 @@
33
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
44

55
#include "../assembly.h"
6+
#include "safeseh.h"
67

78
// float __floatdisf(di_int a);
89

@@ -16,6 +17,7 @@
1617
#ifdef __i386__
1718

1819
.text
20+
WIN32_SAFE_SEH_HEADER
1921
.balign 4
2022
DEFINE_COMPILERRT_FUNCTION(__floatdisf)
2123
#ifndef TRUST_CALLERS_USE_64_BIT_STORES

‎compiler-rt/lib/builtins/i386/floatdixf.S

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -3,6 +3,7 @@
33
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
44

55
#include "../assembly.h"
6+
#include "safeseh.h"
67

78
// long double __floatdixf(di_int a);
89

@@ -16,6 +17,7 @@
1617
// It can be turned off by defining the TRUST_CALLERS_USE_64_BIT_STORES macro.
1718

1819
.text
20+
WIN32_SAFE_SEH_HEADER
1921
.balign 4
2022
DEFINE_COMPILERRT_FUNCTION(__floatdixf)
2123
#ifndef TRUST_CALLERS_USE_64_BIT_STORES

‎compiler-rt/lib/builtins/i386/floatundidf.S

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -11,6 +11,7 @@
1111
//===----------------------------------------------------------------------===//
1212

1313
#include "../assembly.h"
14+
#include "safeseh.h"
1415

1516
// double __floatundidf(du_int a);
1617

@@ -33,6 +34,7 @@ twop84:
3334
#define REL_ADDR(_a) (_a)-0b(%eax)
3435

3536
.text
37+
WIN32_SAFE_SEH_HEADER
3638
.balign 4
3739
DEFINE_COMPILERRT_FUNCTION(__floatundidf)
3840
movss 8(%esp), %xmm1 // high 32 bits of a

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