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lib: Add atomic bit set/clear operations.

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Add addtional functionlities for set/clear bits
atomically.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
This commit is contained in:
Atish Patra 2019-01-20 23:23:28 -08:00 • committed by Anup Patel
parent 784a4657c0
commit 312b6bf32f
5 changed files with 179 additions and 0 deletions
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2
include/sbi/riscv_asm.h
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@ -30,6 +30,7 @@
#define LGREG __REG_SEL(3, 2)
#if __SIZEOF_POINTER__ == 8
#define BITS_PER_LONG 64
#ifdef __ASSEMBLY__
#define RISCV_PTR .dword
#define RISCV_SZPTR 8
@ -40,6 +41,7 @@
#define RISCV_LGPTR "3"
#endif
#elif __SIZEOF_POINTER__ == 4
#define BITS_PER_LONG 32
#ifdef __ASSEMBLY__
#define RISCV_PTR .word
#define RISCV_SZPTR 4