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f159f4ed55
The TLS register is only available on ARM1136 r1p0 and later. Set HWCAP_TLS flags if hardware TLS is available and test for it if CONFIG_CPU_32v6K is not set for V6. Note that we set the TLS instruction in __kuser_get_tls dynamically as suggested by Jamie Lokier <jamie@shareable.org>. Also the __switch_to code is optimized out in most cases as suggested by Nicolas Pitre <nico@fluxnic.net>. Reviewed-by: Nicolas Pitre <nicolas.pitre@linaro.org> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
34 lines
753 B
C
34 lines
753 B
C
#ifndef __ASMARM_HWCAP_H
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#define __ASMARM_HWCAP_H
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/*
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* HWCAP flags - for elf_hwcap (in kernel) and AT_HWCAP
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*/
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#define HWCAP_SWP 1
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#define HWCAP_HALF 2
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#define HWCAP_THUMB 4
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#define HWCAP_26BIT 8 /* Play it safe */
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#define HWCAP_FAST_MULT 16
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#define HWCAP_FPA 32
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#define HWCAP_VFP 64
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#define HWCAP_EDSP 128
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#define HWCAP_JAVA 256
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#define HWCAP_IWMMXT 512
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#define HWCAP_CRUNCH 1024
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#define HWCAP_THUMBEE 2048
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#define HWCAP_NEON 4096
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#define HWCAP_VFPv3 8192
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#define HWCAP_VFPv3D16 16384
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#define HWCAP_TLS 32768
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#if defined(__KERNEL__) && !defined(__ASSEMBLY__)
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/*
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* This yields a mask that user programs can use to figure out what
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* instruction set this cpu supports.
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*/
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#define ELF_HWCAP (elf_hwcap)
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extern unsigned int elf_hwcap;
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#endif
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#endif
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