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arm: parasite: implement arch_get_tls() in C

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This patch should simplify the routine interface change
in the following patch.

Signed-off-by: Alexander Kartashov <alekskartashov@parallels.com>
Reviewed-by: Christopher Covington <cov@codeaurora.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Alexander Kartashov
2014-03-10 12:51:21 +04:00
committed by Pavel Emelyanov
parent a247426ca1
commit 16ebfa1656
1 changed files with 3 additions and 22 deletions
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25
arch/arm/include/asm/parasite.h
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@@ -1,28 +1,9 @@
#ifndef __ASM_PARASITE_H__ #ifndef __ASM_PARASITE_H__
#define __ASM_PARASITE_H__ #define __ASM_PARASITE_H__
static inline u32 arch_get_tls(void) { static inline u32 arch_get_tls(void)
u32 res; {
return ((u32 (*)())0xffff0fe0)();
asm (
"adr %%r1, 1f \n"
"ldr %%r1, [%%r1] \n"
"push { %%r7, %%lr } \n"
"blx %%r1 \n"
"pop { %%r7, %%lr } \n"
"mov %0, %%r0 \n"
"b 2f \n"
"1: \n"
".word 0xffff0fe0 \n"
"2: \n"
:"=r"(res)
:
: "r0", "r1", "memory"
);
return res;
} }
#endif #endif