builtins: Allow building windows arm functions for mingw

When building with clang/LLVM in MSVC mode, the msvcrt libraries contain
these functions.

When building in a mingw environment, we need to provide them somehow,
e.g. via compiler-rt.

The aeabi divmod functions work in the same way as the corresponding
__rt_*div* functions for windows, but their parameters are swapped.
The functions for converting float to integer and vice versa are the
same as their aeabi equivalents, only with different function names.

Differential Revision: https://reviews.llvm.org/D26183

llvm-svn: 287465

diff --git a/compiler-rt/lib/builtins/CMakeLists.txt b/compiler-rt/lib/builtins/CMakeLists.txt
index 5cbc1cb..64d5ca3 100644 (file)
--- a/compiler-rt/lib/builtins/CMakeLists.txt
+++ b/compiler-rt/lib/builtins/CMakeLists.txt
@@ -371,7 +371,31 @@ set(arm_Thumb1_SOURCES
   ${arm_Thumb1_VFPv2_SOURCES}
   ${arm_Thumb1_icache_SOURCES})
 
-if(NOT WIN32)
+if(MINGW)
+  set(arm_SOURCES
+      arm/aeabi_idivmod.S
+      arm/aeabi_ldivmod.S
+      arm/aeabi_uidivmod.S
+      arm/aeabi_uldivmod.S
+      divmoddi4.c
+      divmodsi4.c
+      divdi3.c
+      divsi3.c
+      fixdfdi.c
+      fixsfdi.c
+      fixunsdfdi.c
+      fixunssfdi.c
+      floatdidf.c
+      floatdisf.c
+      floatundidf.c
+      floatundisf.c
+      mingw_fixfloat.c
+      moddi3.c
+      udivmoddi4.c
+      udivmodsi4.c
+      udivsi3.c
+      umoddi3.c)
+else(MINGW)
   # TODO the EABI sources should only be added to EABI targets
   set(arm_SOURCES
     ${arm_SOURCES}

diff --git a/compiler-rt/lib/builtins/arm/aeabi_idivmod.S b/compiler-rt/lib/builtins/arm/aeabi_idivmod.S
index 2fcad86..8ad1018 100644 (file)
--- a/compiler-rt/lib/builtins/arm/aeabi_idivmod.S
+++ b/compiler-rt/lib/builtins/arm/aeabi_idivmod.S
@@ -15,12 +15,21 @@
 //   return {quot, rem};
 // }
 
+#if defined(__MINGW32__)
+#define __aeabi_idivmod __rt_sdiv
+#endif
+
         .syntax unified
         .p2align 2
 DEFINE_COMPILERRT_FUNCTION(__aeabi_idivmod)
         push    { lr }
         sub     sp, sp, #4
         mov     r2, sp
+#if defined(__MINGW32__)
+        mov     r3, r0
+        mov     r0, r1
+        mov     r1, r3
+#endif
         bl      SYMBOL_NAME(__divmodsi4)
         ldr     r1, [sp]
         add     sp, sp, #4

diff --git a/compiler-rt/lib/builtins/arm/aeabi_ldivmod.S b/compiler-rt/lib/builtins/arm/aeabi_ldivmod.S
index 9f161f3..3dae14e 100644 (file)
--- a/compiler-rt/lib/builtins/arm/aeabi_ldivmod.S
+++ b/compiler-rt/lib/builtins/arm/aeabi_ldivmod.S
@@ -16,6 +16,10 @@
 //   return {quot, rem};
 // }
 
+#if defined(__MINGW32__)
+#define __aeabi_ldivmod __rt_sdiv64
+#endif
+
         .syntax unified
         .p2align 2
 DEFINE_COMPILERRT_FUNCTION(__aeabi_ldivmod)
@@ -23,6 +27,14 @@ DEFINE_COMPILERRT_FUNCTION(__aeabi_ldivmod)
         sub     sp, sp, #16
         add     r12, sp, #8
         str     r12, [sp]
+#if defined(__MINGW32__)
+        mov     r12, r0
+        mov     r0, r2
+        mov     r2, r12
+        mov     r12, r1
+        mov     r1, r3
+        mov     r3, r12
+#endif
         bl      SYMBOL_NAME(__divmoddi4)
         ldr     r2, [sp, #8]
         ldr     r3, [sp, #12]

diff --git a/compiler-rt/lib/builtins/arm/aeabi_uidivmod.S b/compiler-rt/lib/builtins/arm/aeabi_uidivmod.S
index e1e12d9..4a89449 100644 (file)
--- a/compiler-rt/lib/builtins/arm/aeabi_uidivmod.S
+++ b/compiler-rt/lib/builtins/arm/aeabi_uidivmod.S
@@ -16,12 +16,21 @@
 //   return {quot, rem};
 // }
 
+#if defined(__MINGW32__)
+#define __aeabi_uidivmod __rt_udiv
+#endif
+
         .syntax unified
         .p2align 2
 DEFINE_COMPILERRT_FUNCTION(__aeabi_uidivmod)
         push    { lr }
         sub     sp, sp, #4
         mov     r2, sp
+#if defined(__MINGW32__)
+        mov     r3, r0
+        mov     r0, r1
+        mov     r1, r3
+#endif
         bl      SYMBOL_NAME(__udivmodsi4)
         ldr     r1, [sp]
         add     sp, sp, #4

diff --git a/compiler-rt/lib/builtins/arm/aeabi_uldivmod.S b/compiler-rt/lib/builtins/arm/aeabi_uldivmod.S
index e8aaef2..bc26e56 100644 (file)
--- a/compiler-rt/lib/builtins/arm/aeabi_uldivmod.S
+++ b/compiler-rt/lib/builtins/arm/aeabi_uldivmod.S
@@ -16,6 +16,10 @@
 //   return {quot, rem};
 // }
 
+#if defined(__MINGW32__)
+#define __aeabi_uldivmod __rt_udiv64
+#endif
+
         .syntax unified
         .p2align 2
 DEFINE_COMPILERRT_FUNCTION(__aeabi_uldivmod)
@@ -23,6 +27,14 @@ DEFINE_COMPILERRT_FUNCTION(__aeabi_uldivmod)
         sub    sp, sp, #16
         add    r12, sp, #8
         str    r12, [sp]
+#if defined(__MINGW32__)
+        mov     r12, r0
+        mov     r0, r2
+        mov     r2, r12
+        mov     r12, r1
+        mov     r1, r3
+        mov     r3, r12
+#endif
         bl     SYMBOL_NAME(__udivmoddi4)
         ldr    r2, [sp, #8]
         ldr    r3, [sp, #12]

diff --git a/compiler-rt/lib/builtins/mingw_fixfloat.c b/compiler-rt/lib/builtins/mingw_fixfloat.c
new file mode 100644 (file)
index 0000000..c462e0d
--- /dev/null
+++ b/compiler-rt/lib/builtins/mingw_fixfloat.c
@@ -0,0 +1,36 @@
+/* ===-- mingw_fixfloat.c - Wrap int/float conversions for arm/windows -----===
+ *
+ *                     The LLVM Compiler Infrastructure
+ *
+ * This file is dual licensed under the MIT and the University of Illinois Open
+ * Source Licenses. See LICENSE.TXT for details.
+ *
+ * ===----------------------------------------------------------------------===
+ */
+
+#include "int_lib.h"
+
+COMPILER_RT_ABI di_int __fixdfdi(double a);
+COMPILER_RT_ABI di_int __fixsfdi(float a);
+COMPILER_RT_ABI du_int __fixunsdfdi(double a);
+COMPILER_RT_ABI du_int __fixunssfdi(float a);
+COMPILER_RT_ABI double __floatdidf(di_int a);
+COMPILER_RT_ABI float __floatdisf(di_int a);
+COMPILER_RT_ABI double __floatundidf(du_int a);
+COMPILER_RT_ABI float __floatundisf(du_int a);
+
+COMPILER_RT_ABI di_int __dtoi64(double a) { return __fixdfdi(a); }
+
+COMPILER_RT_ABI di_int __stoi64(float a) { return __fixsfdi(a); }
+
+COMPILER_RT_ABI du_int __dtou64(double a) { return __fixunsdfdi(a); }
+
+COMPILER_RT_ABI du_int __stou64(float a) { return __fixunssfdi(a); }
+
+COMPILER_RT_ABI double __i64tod(di_int a) { return __floatdidf(a); }
+
+COMPILER_RT_ABI float __i64tos(di_int a) { return __floatdisf(a); }
+
+COMPILER_RT_ABI double __u64tod(du_int a) { return __floatundidf(a); }
+
+COMPILER_RT_ABI float __u64tos(du_int a) { return __floatundisf(a); }