From 34ab38cd80982b63ed56451f9e7abd08677f1769 Mon Sep 17 00:00:00 2001 From: Jiaxun Yang Date: Thu, 10 Oct 2019 23:01:57 +0800 Subject: [PATCH] MIPS: elf_hwcap: Export userspace ASEs commit 38dffe1e4dde1d3174fdce09d67370412843ebb5 upstream. A Golang developer reported MIPS hwcap isn't reflecting instructions that the processor actually supported so programs can't apply optimized code at runtime. Thus we export the ASEs that can be used in userspace programs. Reported-by: Meng Zhuo Signed-off-by: Jiaxun Yang Cc: linux-mips@vger.kernel.org Cc: Paul Burton Cc: # 4.14+ Signed-off-by: Paul Burton Signed-off-by: Greg Kroah-Hartman --- arch/mips/include/uapi/asm/hwcap.h | 11 +++++++++++ arch/mips/kernel/cpu-probe.c | 33 +++++++++++++++++++++++++++++++++ 2 files changed, 44 insertions(+) diff --git a/arch/mips/include/uapi/asm/hwcap.h b/arch/mips/include/uapi/asm/hwcap.h index a2aba4b..1ade1da 100644 --- a/arch/mips/include/uapi/asm/hwcap.h +++ b/arch/mips/include/uapi/asm/hwcap.h @@ -6,5 +6,16 @@ #define HWCAP_MIPS_R6 (1 << 0) #define HWCAP_MIPS_MSA (1 << 1) #define HWCAP_MIPS_CRC32 (1 << 2) +#define HWCAP_MIPS_MIPS16 (1 << 3) +#define HWCAP_MIPS_MDMX (1 << 4) +#define HWCAP_MIPS_MIPS3D (1 << 5) +#define HWCAP_MIPS_SMARTMIPS (1 << 6) +#define HWCAP_MIPS_DSP (1 << 7) +#define HWCAP_MIPS_DSP2 (1 << 8) +#define HWCAP_MIPS_DSP3 (1 << 9) +#define HWCAP_MIPS_MIPS16E2 (1 << 10) +#define HWCAP_LOONGSON_MMI (1 << 11) +#define HWCAP_LOONGSON_EXT (1 << 12) +#define HWCAP_LOONGSON_EXT2 (1 << 13) #endif /* _UAPI_ASM_HWCAP_H */ diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c index 958b627..581defb 100644 --- a/arch/mips/kernel/cpu-probe.c +++ b/arch/mips/kernel/cpu-probe.c @@ -2105,6 +2105,39 @@ void cpu_probe(void) elf_hwcap |= HWCAP_MIPS_MSA; } + if (cpu_has_mips16) + elf_hwcap |= HWCAP_MIPS_MIPS16; + + if (cpu_has_mdmx) + elf_hwcap |= HWCAP_MIPS_MDMX; + + if (cpu_has_mips3d) + elf_hwcap |= HWCAP_MIPS_MIPS3D; + + if (cpu_has_smartmips) + elf_hwcap |= HWCAP_MIPS_SMARTMIPS; + + if (cpu_has_dsp) + elf_hwcap |= HWCAP_MIPS_DSP; + + if (cpu_has_dsp2) + elf_hwcap |= HWCAP_MIPS_DSP2; + + if (cpu_has_dsp3) + elf_hwcap |= HWCAP_MIPS_DSP3; + + if (cpu_has_mips16e2) + elf_hwcap |= HWCAP_MIPS_MIPS16E2; + + if (cpu_has_loongson_mmi) + elf_hwcap |= HWCAP_LOONGSON_MMI; + + if (cpu_has_loongson_ext) + elf_hwcap |= HWCAP_LOONGSON_EXT; + + if (cpu_has_loongson_ext2) + elf_hwcap |= HWCAP_LOONGSON_EXT2; + if (cpu_has_vz) cpu_probe_vz(c); -- 2.7.4