search for: bswapdi2

...functions: unsigned long __bswapsi2 (unsigned long ul) { return (((ul) & 0xff000000ul) >> 3 * 8) | (((ul) & 0x00ff0000ul) >> 8) | (((ul) & 0x0000ff00ul) << 8) | (((ul) & 0x000000fful) << 3 * 8); } unsigned long long __bswapdi2(unsigned long long ull) { return ((ull & 0xff00000000000000ull) >> 7 * 8) | ((ull & 0x00ff000000000000ull) >> 5 * 8) | ((ull & 0x0000ff0000000000ull) >> 3 * 8) | ((ull & 0x000000ff00000000ull) >> 8) | ((ull & 0x...

bswapdi2 for i386 is correct Bits 31:0 of the source are loaded into edx. Bits 63:32 are loaded into eax. Those are each bswapped. The ABI for the return is edx contains bits [63:32] and eax contains [31:0]. This is opposite of how the register were loaded. ~Craig On Sun, Nov 25, 2018 at 10:36 AM Craig...

...emonic without a size suffix mov r1, r1, lsr #8 ^ /home/llvm_all/llvm/projects/compiler-rt/lib/builtins/arm/bswapsi2.S:28:3: error: invalid instruction mnemonic 'eor' eor r0, r1, r0, ror #8 ^~~ [2/207] Building ASM object lib/builtins/CMakeFiles/clang_rt.builtins-armhf.dir/arm/bswapdi2.S.o FAILED: lib/builtins/CMakeFiles/clang_rt.builtins-armhf.dir/arm/bswapdi2.S.o /usr/local/myclang/bin/clang -DVISIBILITY_HIDDEN -fno-lto -std=c11 -fPIC -fno-builtin -fvisibility=hidden -fomit-frame-pointer -fomit-frame-pointer -DCOMPILER_RT_ARMHF_TARGET -MD -MT lib/builtins/CMakeFiles/clang_...

I am currently trying to compile a pretty simple program to work on an experimental board. It contains an (FPGA-version of) an ARMv4 processor. So basically, I try this (on my Ubuntu 18.04.1 LTS): clang -v --target=arm-none-eabi -c barehello.c -o barehelloCLANG.o clang -v --target=arm-none-eabi -c io.c -o io.o clang -v --target=arm-none-eabi barehelloCLANG.o io.o -o helloCLANGstatic -static

...lsr #8 >> ^ >> /home/llvm_all/llvm/projects/compiler-rt/lib/builtins/arm/bswapsi2.S:28:3: error: invalid instruction mnemonic 'eor' >> eor r0, r1, r0, ror #8 >> ^~~ >> [2/207] Building ASM object lib/builtins/CMakeFiles/clang_rt.builtins-armhf.dir/arm/bswapdi2.S.o >> FAILED: lib/builtins/CMakeFiles/clang_rt.builtins-armhf.dir/arm/bswapdi2.S.o >> /usr/local/myclang/bin/clang -DVISIBILITY_HIDDEN -fno-lto -std=c11 -fPIC -fno-builtin -fvisibility=hidden -fomit-frame-pointer -fomit-frame-pointer -DCOMPILER_RT_ARMHF_TARGET -MD -MT lib/builtins/CMa...

...lsr #8 >> ^ >> /home/llvm_all/llvm/projects/compiler-rt/lib/builtins/arm/bswapsi2.S:28:3: error: invalid instruction mnemonic 'eor' >> eor r0, r1, r0, ror #8 >> ^~~ >> [2/207] Building ASM object lib/builtins/CMakeFiles/clang_rt.builtins-armhf.dir/arm/bswapdi2.S.o >> FAILED: lib/builtins/CMakeFiles/clang_rt.builtins-armhf.dir/arm/bswapdi2.S.o >> /usr/local/myclang/bin/clang -DVISIBILITY_HIDDEN -fno-lto -std=c11 -fPIC -fno-builtin -fvisibility=hidden -fomit-frame-pointer -fomit-frame-pointer -DCOMPILER_RT_ARMHF_TARGET -MD -MT lib/builtins/CMa...

...sr #8 > > ^ > > /home/llvm_all/llvm/projects/compiler-rt/lib/builtins/arm/bswapsi2.S:28:3: error: invalid instruction mnemonic 'eor' > > eor r0, r1, r0, ror #8 > > ^~~ > > [2/207] Building ASM object lib/builtins/CMakeFiles/clang_rt.builtins-armhf.dir/arm/bswapdi2.S.o > > FAILED: lib/builtins/CMakeFiles/clang_rt.builtins-armhf.dir/arm/bswapdi2.S.o > > /usr/local/myclang/bin/clang -DVISIBILITY_HIDDEN -fno-lto -std=c11 -fPIC -fno-builtin -fvisibility=hidden -fomit-frame-pointer -fomit-frame-pointer -DCOMPILER_RT_ARMHF_TARGET -MD -MT lib/builtins/C...

...gt; /home/llvm_all/llvm/projects/compiler-rt/lib/builtins/arm/bswapsi2.S:28:3: error: invalid instruction mnemonic 'eor' > >>> eor r0, r1, r0, ror #8 > >>> ^~~ > >>> [2/207] Building ASM object lib/builtins/CMakeFiles/clang_rt.builtins-armhf.dir/arm/bswapdi2.S.o > >>> FAILED: lib/builtins/CMakeFiles/clang_rt.builtins-armhf.dir/arm/bswapdi2.S.o > >>> /usr/local/myclang/bin/clang -DVISIBILITY_HIDDEN -fno-lto -std=c11 -fPIC -fno-builtin -fvisibility=hidden -fomit-frame-pointer -fomit-frame-pointer -DCOMPILER_RT_ARMHF_TARGET -MD -M...

...12(%ebp), %eax 1f79: 0f c8 bswapl %eax 1f7b: 0f ca bswapl %edx 1f7d: 5d popl %ebp 1f7e: c3 retl ~Craig On Sun, Nov 25, 2018 at 11:39 AM Stefan Kanthak <stefan.kanthak at nexgo.de> wrote: > "Craig Topper" <craig.topper at gmail.com> wrote: > > > bswapdi2 for i386 is correct > > OUCH! > > > Bits 31:0 of the source are loaded into edx. Bits 63:32 are loaded into > > eax. Those are each bswapped. > > This exchanges the high byte of each 32-bit PART with its low byte, but > NOT the high byte of the whole 64-bit operand wit...

...> mov r1, r1, lsr #8 > ^ > /home/llvm_all/llvm/projects/compiler-rt/lib/builtins/arm/bswapsi2.S:28:3: error: invalid instruction mnemonic 'eor' > eor r0, r1, r0, ror #8 > ^~~ > [2/207] Building ASM object lib/builtins/CMakeFiles/clang_rt.builtins-armhf.dir/arm/bswapdi2.S.o > FAILED: lib/builtins/CMakeFiles/clang_rt.builtins-armhf.dir/arm/bswapdi2.S.o > /usr/local/myclang/bin/clang -DVISIBILITY_HIDDEN -fno-lto -std=c11 -fPIC -fno-builtin -fvisibility=hidden -fomit-frame-pointer -fomit-frame-pointer -DCOMPILER_RT_ARMHF_TARGET -MD -MT lib/builtins/CMakeFiles/...

...> mov r1, r1, lsr #8 > ^ > /home/llvm_all/llvm/projects/compiler-rt/lib/builtins/arm/bswapsi2.S:28:3: error: invalid instruction mnemonic 'eor' > eor r0, r1, r0, ror #8 > ^~~ > [2/207] Building ASM object lib/builtins/CMakeFiles/clang_rt.builtins-armhf.dir/arm/bswapdi2.S.o > FAILED: lib/builtins/CMakeFiles/clang_rt.builtins-armhf.dir/arm/bswapdi2.S.o > /usr/local/myclang/bin/clang -DVISIBILITY_HIDDEN -fno-lto -std=c11 -fPIC -fno-builtin -fvisibility=hidden -fomit-frame-pointer -fomit-frame-pointer -DCOMPILER_RT_ARMHF_TARGET -MD -MT lib/builtins/CMakeFiles/...