Author: Malay Sanghi Date: 2024-05-31T14:11:33+08:00 New Revision: 089dfeee8a8761c35a3a56e75281275871dd53bc
URL: https://github.com/llvm/llvm-project/commit/089dfeee8a8761c35a3a56e75281275871dd53bc DIFF: https://github.com/llvm/llvm-project/commit/089dfeee8a8761c35a3a56e75281275871dd53bc.diff LOG: [X86] Add support for MS inp functions. (#93804) support _inp, _inpw, _inpd. These functions were removed from the Windows runtime library, but aare still supported for kernel mode development. Added: Modified: clang/lib/Headers/intrin.h clang/test/CodeGen/X86/ms-x86-intrinsics.c Removed: ################################################################################ diff --git a/clang/lib/Headers/intrin.h b/clang/lib/Headers/intrin.h index 5ceb986a1f652..1227f45d5432b 100644 --- a/clang/lib/Headers/intrin.h +++ b/clang/lib/Headers/intrin.h @@ -329,6 +329,25 @@ static __inline__ void __DEFAULT_FN_ATTRS __stosq(unsigned __int64 *__dst, static __inline__ void __DEFAULT_FN_ATTRS __halt(void) { __asm__ volatile("hlt"); } + +static inline int _inp(unsigned short port) { + int ret; + __asm__ volatile("inb %w1, %b0" : "=a"(ret) : "Nd"(port)); + return ret; +} + +static inline unsigned short _inpw(unsigned short port) { + unsigned short ret; + __asm__ volatile("inw %w1, %w0" : "=a"(ret) : "Nd"(port)); + return ret; +} + +static inline unsigned long _inpd(unsigned short port) { + unsigned long ret; + __asm__ volatile("inl %w1, %k0" : "=a"(ret) : "Nd"(port)); + return ret; +} + #endif #if defined(__i386__) || defined(__x86_64__) || defined(__aarch64__) diff --git a/clang/test/CodeGen/X86/ms-x86-intrinsics.c b/clang/test/CodeGen/X86/ms-x86-intrinsics.c index aa557c8e19a83..9566951b44d2d 100644 --- a/clang/test/CodeGen/X86/ms-x86-intrinsics.c +++ b/clang/test/CodeGen/X86/ms-x86-intrinsics.c @@ -63,6 +63,31 @@ unsigned __int64 test__emulu(unsigned int a, unsigned int b) { // CHECK: [[RES:%[0-9]+]] = mul nuw i64 [[Y]], [[X]] // CHECK: ret i64 [[RES]] + +int test_inp(unsigned short port) { + return _inp(port); +} +// CHECK-LABEL: i32 @test_inp(i16 noundef +// CHECK-SAME: [[PORT:%.*]]) +// CHECK: [[TMP0:%.*]] = tail call i32 asm sideeffect "inb ${1:w}, ${0:b}", "={ax},N{dx},~{dirflag},~{fpsr},~{flags}"(i16 [[PORT]]) +// CHECK-NEXT: ret i32 [[TMP0]] + +unsigned short test_inpw(unsigned short port) { + return _inpw(port); +} +// CHECK-LABEL: i16 @test_inpw(i16 noundef +// CHECK-SAME: [[PORT:%.*]]) +// CHECK: [[TMP0:%.*]] = tail call i16 asm sideeffect "inw ${1:w}, ${0:w}", "={ax},N{dx},~{dirflag},~{fpsr},~{flags}"(i16 [[PORT]]) +// CHECK-NEXT: ret i16 [[TMP0]] + +unsigned long test_inpd(unsigned short port) { + return _inpd(port); +} +// CHECK-LABEL: i32 @test_inpd(i16 noundef +// CHECK-SAME: [[PORT:%.*]]) +// CHECK: [[TMP0:%.*]] = tail call i32 asm sideeffect "inl ${1:w}, ${0:k}", "={ax},N{dx},~{dirflag},~{fpsr},~{flags}"(i16 [[PORT]]) +// CHECK-NEXT: ret i32 [[TMP0]] + #if defined(__x86_64__) char test__readgsbyte(unsigned long Offset) { _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
