diff --git a/README b/README index f7c8d7b9..07c0aeae 100644 --- a/README +++ b/README @@ -84,6 +84,33 @@ be installed independently using a minor modification in the corresponding Makefile.am configure files (see comments there). See './configure --help' for more options. +Building for MIPS Linux: +------------------------ +MIPS Linux toolchain stable available releases can be found at: +https://community.imgtec.com/developers/mips/tools/codescape-mips-sdk/available-releases/ + +# Add toolchain to PATH +export PATH=$PATH:/path/to/toolchain/bin + +# 32-bit build for mips32r5 (p5600) +HOST=mips-mti-linux-gnu +MIPS_CFLAGS="-O3 -mips32r5 -mabi=32 -mtune=p5600 -mmsa -mfp64 \ + -msched-weight -mload-store-pairs -fPIE" +MIPS_LDFLAGS="-mips32r5 -mabi=32 -mmsa -mfp64 -pie" + +# 64-bit build for mips64r6 (i6400) +HOST=mips-img-linux-gnu +MIPS_CFLAGS="-O3 -mips64r6 -mabi=64 -mtune=i6400 -mmsa -mfp64 \ + -msched-weight -mload-store-pairs -fPIE" +MIPS_LDFLAGS="-mips64r6 -mabi=64 -mmsa -mfp64 -pie" + +./configure --host=${HOST} --build=`config.guess` \ + CC="${HOST}-gcc -EL" \ + CFLAGS="$MIPS_CFLAGS" \ + LDFLAGS="$MIPS_LDFLAGS" +make +make install + CMake: ------ The support for CMake is minimal: it only helps you compile libwebp, cwebp and diff --git a/makefile.unix b/makefile.unix index 3fa5d5f7..fc278731 100644 --- a/makefile.unix +++ b/makefile.unix @@ -89,6 +89,14 @@ endif # EXTRA_FLAGS += -march=armv7-a -mfloat-abi=hard -mfpu=neon -mtune=cortex-a8 # -> seems to make the overall lib slower: -fno-split-wide-types +# MIPS (MSA) 32-bit build specific flags for mips32r5 (p5600): +# EXTRA_FLAGS += -mips32r5 -mabi=32 -mtune=p5600 -mmsa -mfp64 +# EXTRA_FLAGS += -msched-weight -mload-store-pairs + +# MIPS (MSA) 64-bit build specific flags for mips64r6 (i6400): +# EXTRA_FLAGS += -mips64r6 -mabi=64 -mtune=i6400 -mmsa -mfp64 +# EXTRA_FLAGS += -msched-weight -mload-store-pairs + #### Nothing should normally be changed below this line #### AR = ar diff --git a/src/dsp/cpu.c b/src/dsp/cpu.c index 4aa4abbc..cbb08db9 100644 --- a/src/dsp/cpu.c +++ b/src/dsp/cpu.c @@ -170,9 +170,10 @@ static int armCPUInfo(CPUFeature feature) { #endif } VP8CPUInfo VP8GetCPUInfo = armCPUInfo; -#elif defined(WEBP_USE_MIPS32) || defined(WEBP_USE_MIPS_DSP_R2) +#elif defined(WEBP_USE_MIPS32) || defined(WEBP_USE_MIPS_DSP_R2) || \ + defined(WEBP_USE_MSA) static int mipsCPUInfo(CPUFeature feature) { - if ((feature == kMIPS32) || (feature == kMIPSdspR2)) { + if ((feature == kMIPS32) || (feature == kMIPSdspR2) || (feature == kMSA)) { return 1; } else { return 0; diff --git a/src/dsp/dsp.h b/src/dsp/dsp.h index a0c45fcc..1faac27b 100644 --- a/src/dsp/dsp.h +++ b/src/dsp/dsp.h @@ -96,6 +96,10 @@ extern "C" { #endif #endif +#if defined(__mips_msa) && defined(__mips_isa_rev) && (__mips_isa_rev >= 5) +#define WEBP_USE_MSA +#endif + // This macro prevents thread_sanitizer from reporting known concurrent writes. #define WEBP_TSAN_IGNORE_FUNCTION #if defined(__has_feature) @@ -134,7 +138,8 @@ typedef enum { kAVX2, kNEON, kMIPS32, - kMIPSdspR2 + kMIPSdspR2, + kMSA } CPUFeature; // returns true if the CPU supports the feature. typedef int (*VP8CPUInfo)(CPUFeature feature);