linux/arch/arm/include/asm/hwcap.h
Tony Lindgren f159f4ed55 ARM: 6207/1: Replace CONFIG_HAS_TLS_REG with HWCAP_TLS and check for it on V6
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>
2010-07-09 14:41:35 +01:00

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C

#ifndef __ASMARM_HWCAP_H
#define __ASMARM_HWCAP_H
/*
* HWCAP flags - for elf_hwcap (in kernel) and AT_HWCAP
*/
#define HWCAP_SWP 1
#define HWCAP_HALF 2
#define HWCAP_THUMB 4
#define HWCAP_26BIT 8 /* Play it safe */
#define HWCAP_FAST_MULT 16
#define HWCAP_FPA 32
#define HWCAP_VFP 64
#define HWCAP_EDSP 128
#define HWCAP_JAVA 256
#define HWCAP_IWMMXT 512
#define HWCAP_CRUNCH 1024
#define HWCAP_THUMBEE 2048
#define HWCAP_NEON 4096
#define HWCAP_VFPv3 8192
#define HWCAP_VFPv3D16 16384
#define HWCAP_TLS 32768
#if defined(__KERNEL__) && !defined(__ASSEMBLY__)
/*
* This yields a mask that user programs can use to figure out what
* instruction set this cpu supports.
*/
#define ELF_HWCAP (elf_hwcap)
extern unsigned int elf_hwcap;
#endif
#endif