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Diffstat (limited to 'arch/h8300/include/asm/bitops.h')
-rw-r--r--arch/h8300/include/asm/bitops.h212
1 files changed, 212 insertions, 0 deletions
diff --git a/arch/h8300/include/asm/bitops.h b/arch/h8300/include/asm/bitops.h
new file mode 100644
index 000000000000..cb18e3b0aa94
--- /dev/null
+++ b/arch/h8300/include/asm/bitops.h
@@ -0,0 +1,212 @@
+#ifndef _H8300_BITOPS_H
+#define _H8300_BITOPS_H
+
+/*
+ * Copyright 1992, Linus Torvalds.
+ * Copyright 2002, Yoshinori Sato
+ */
+
+#include <linux/compiler.h>
+#include <asm/system.h>
+
+#ifdef __KERNEL__
+
+#ifndef _LINUX_BITOPS_H
+#error only <linux/bitops.h> can be included directly
+#endif
+
+/*
+ * Function prototypes to keep gcc -Wall happy
+ */
+
+/*
+ * ffz = Find First Zero in word. Undefined if no zero exists,
+ * so code should check against ~0UL first..
+ */
+static __inline__ unsigned long ffz(unsigned long word)
+{
+ unsigned long result;
+
+ result = -1;
+ __asm__("1:\n\t"
+ "shlr.l %2\n\t"
+ "adds #1,%0\n\t"
+ "bcs 1b"
+ : "=r" (result)
+ : "0" (result),"r" (word));
+ return result;
+}
+
+#define H8300_GEN_BITOP_CONST(OP,BIT) \
+ case BIT: \
+ __asm__(OP " #" #BIT ",@%0"::"r"(b_addr):"memory"); \
+ break;
+
+#define H8300_GEN_BITOP(FNAME,OP) \
+static __inline__ void FNAME(int nr, volatile unsigned long* addr) \
+{ \
+ volatile unsigned char *b_addr; \
+ b_addr = (volatile unsigned char *)addr + ((nr >> 3) ^ 3); \
+ if (__builtin_constant_p(nr)) { \
+ switch(nr & 7) { \
+ H8300_GEN_BITOP_CONST(OP,0) \
+ H8300_GEN_BITOP_CONST(OP,1) \
+ H8300_GEN_BITOP_CONST(OP,2) \
+ H8300_GEN_BITOP_CONST(OP,3) \
+ H8300_GEN_BITOP_CONST(OP,4) \
+ H8300_GEN_BITOP_CONST(OP,5) \
+ H8300_GEN_BITOP_CONST(OP,6) \
+ H8300_GEN_BITOP_CONST(OP,7) \
+ } \
+ } else { \
+ __asm__(OP " %w0,@%1"::"r"(nr),"r"(b_addr):"memory"); \
+ } \
+}
+
+/*
+ * clear_bit() doesn't provide any barrier for the compiler.
+ */
+#define smp_mb__before_clear_bit() barrier()
+#define smp_mb__after_clear_bit() barrier()
+
+H8300_GEN_BITOP(set_bit ,"bset")
+H8300_GEN_BITOP(clear_bit ,"bclr")
+H8300_GEN_BITOP(change_bit,"bnot")
+#define __set_bit(nr,addr) set_bit((nr),(addr))
+#define __clear_bit(nr,addr) clear_bit((nr),(addr))
+#define __change_bit(nr,addr) change_bit((nr),(addr))
+
+#undef H8300_GEN_BITOP
+#undef H8300_GEN_BITOP_CONST
+
+static __inline__ int test_bit(int nr, const unsigned long* addr)
+{
+ return (*((volatile unsigned char *)addr +
+ ((nr >> 3) ^ 3)) & (1UL << (nr & 7))) != 0;
+}
+
+#define __test_bit(nr, addr) test_bit(nr, addr)
+
+#define H8300_GEN_TEST_BITOP_CONST_INT(OP,BIT) \
+ case BIT: \
+ __asm__("stc ccr,%w1\n\t" \
+ "orc #0x80,ccr\n\t" \
+ "bld #" #BIT ",@%4\n\t" \
+ OP " #" #BIT ",@%4\n\t" \
+ "rotxl.l %0\n\t" \
+ "ldc %w1,ccr" \
+ : "=r"(retval),"=&r"(ccrsave),"=m"(*b_addr) \
+ : "0" (retval),"r" (b_addr) \
+ : "memory"); \
+ break;
+
+#define H8300_GEN_TEST_BITOP_CONST(OP,BIT) \
+ case BIT: \
+ __asm__("bld #" #BIT ",@%3\n\t" \
+ OP " #" #BIT ",@%3\n\t" \
+ "rotxl.l %0\n\t" \
+ : "=r"(retval),"=m"(*b_addr) \
+ : "0" (retval),"r" (b_addr) \
+ : "memory"); \
+ break;
+
+#define H8300_GEN_TEST_BITOP(FNNAME,OP) \
+static __inline__ int FNNAME(int nr, volatile void * addr) \
+{ \
+ int retval = 0; \
+ char ccrsave; \
+ volatile unsigned char *b_addr; \
+ b_addr = (volatile unsigned char *)addr + ((nr >> 3) ^ 3); \
+ if (__builtin_constant_p(nr)) { \
+ switch(nr & 7) { \
+ H8300_GEN_TEST_BITOP_CONST_INT(OP,0) \
+ H8300_GEN_TEST_BITOP_CONST_INT(OP,1) \
+ H8300_GEN_TEST_BITOP_CONST_INT(OP,2) \
+ H8300_GEN_TEST_BITOP_CONST_INT(OP,3) \
+ H8300_GEN_TEST_BITOP_CONST_INT(OP,4) \
+ H8300_GEN_TEST_BITOP_CONST_INT(OP,5) \
+ H8300_GEN_TEST_BITOP_CONST_INT(OP,6) \
+ H8300_GEN_TEST_BITOP_CONST_INT(OP,7) \
+ } \
+ } else { \
+ __asm__("stc ccr,%w1\n\t" \
+ "orc #0x80,ccr\n\t" \
+ "btst %w5,@%4\n\t" \
+ OP " %w5,@%4\n\t" \
+ "beq 1f\n\t" \
+ "inc.l #1,%0\n" \
+ "1:\n\t" \
+ "ldc %w1,ccr" \
+ : "=r"(retval),"=&r"(ccrsave),"=m"(*b_addr) \
+ : "0" (retval),"r" (b_addr),"r"(nr) \
+ : "memory"); \
+ } \
+ return retval; \
+} \
+ \
+static __inline__ int __ ## FNNAME(int nr, volatile void * addr) \
+{ \
+ int retval = 0; \
+ volatile unsigned char *b_addr; \
+ b_addr = (volatile unsigned char *)addr + ((nr >> 3) ^ 3); \
+ if (__builtin_constant_p(nr)) { \
+ switch(nr & 7) { \
+ H8300_GEN_TEST_BITOP_CONST(OP,0) \
+ H8300_GEN_TEST_BITOP_CONST(OP,1) \
+ H8300_GEN_TEST_BITOP_CONST(OP,2) \
+ H8300_GEN_TEST_BITOP_CONST(OP,3) \
+ H8300_GEN_TEST_BITOP_CONST(OP,4) \
+ H8300_GEN_TEST_BITOP_CONST(OP,5) \
+ H8300_GEN_TEST_BITOP_CONST(OP,6) \
+ H8300_GEN_TEST_BITOP_CONST(OP,7) \
+ } \
+ } else { \
+ __asm__("btst %w4,@%3\n\t" \
+ OP " %w4,@%3\n\t" \
+ "beq 1f\n\t" \
+ "inc.l #1,%0\n" \
+ "1:" \
+ : "=r"(retval),"=m"(*b_addr) \
+ : "0" (retval),"r" (b_addr),"r"(nr) \
+ : "memory"); \
+ } \
+ return retval; \
+}
+
+H8300_GEN_TEST_BITOP(test_and_set_bit, "bset")
+H8300_GEN_TEST_BITOP(test_and_clear_bit, "bclr")
+H8300_GEN_TEST_BITOP(test_and_change_bit,"bnot")
+#undef H8300_GEN_TEST_BITOP_CONST
+#undef H8300_GEN_TEST_BITOP_CONST_INT
+#undef H8300_GEN_TEST_BITOP
+
+#include <asm-generic/bitops/ffs.h>
+
+static __inline__ unsigned long __ffs(unsigned long word)
+{
+ unsigned long result;
+
+ result = -1;
+ __asm__("1:\n\t"
+ "shlr.l %2\n\t"
+ "adds #1,%0\n\t"
+ "bcc 1b"
+ : "=r" (result)
+ : "0"(result),"r"(word));
+ return result;
+}
+
+#include <asm-generic/bitops/find.h>
+#include <asm-generic/bitops/sched.h>
+#include <asm-generic/bitops/hweight.h>
+#include <asm-generic/bitops/lock.h>
+#include <asm-generic/bitops/ext2-non-atomic.h>
+#include <asm-generic/bitops/ext2-atomic.h>
+#include <asm-generic/bitops/minix.h>
+
+#endif /* __KERNEL__ */
+
+#include <asm-generic/bitops/fls.h>
+#include <asm-generic/bitops/fls64.h>
+
+#endif /* _H8300_BITOPS_H */
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-09 13:22:38 +0000