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EDITING: compiler.h

/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _UAPI__ALPHA_COMPILER_H
#define _UAPI__ALPHA_COMPILER_H

/* 
 * Herein are macros we use when describing various patterns we want to GCC.
 * In all cases we can get better schedules out of the compiler if we hide
 * as little as possible inside inline assembly.  However, we want to be
 * able to know what we'll get out before giving up inline assembly.  Thus
 * these tests and macros.
 */

#if __GNUC__ == 3 && __GNUC_MINOR__ >= 4 || __GNUC__ > 3
# define __kernel_insbl(val, shift)	__builtin_alpha_insbl(val, shift)
# define __kernel_inswl(val, shift)	__builtin_alpha_inswl(val, shift)
# define __kernel_insql(val, shift)	__builtin_alpha_insql(val, shift)
# define __kernel_inslh(val, shift)	__builtin_alpha_inslh(val, shift)
# define __kernel_extbl(val, shift)	__builtin_alpha_extbl(val, shift)
# define __kernel_extwl(val, shift)	__builtin_alpha_extwl(val, shift)
# define __kernel_cmpbge(a, b)		__builtin_alpha_cmpbge(a, b)
#else
# define __kernel_insbl(val, shift)					\
  ({ unsigned long __kir;						\
     __asm__("insbl %2,%1,%0" : "=r"(__kir) : "rI"(shift), "r"(val));	\
     __kir; })
# define __kernel_inswl(val, shift)					\
  ({ unsigned long __kir;						\
     __asm__("inswl %2,%1,%0" : "=r"(__kir) : "rI"(shift), "r"(val));	\
     __kir; })
# define __kernel_insql(val, shift)					\
  ({ unsigned long __kir;						\
     __asm__("insql %2,%1,%0" : "=r"(__kir) : "rI"(shift), "r"(val));	\
     __kir; })
# define __kernel_inslh(val, shift)					\
  ({ unsigned long __kir;						\
     __asm__("inslh %2,%1,%0" : "=r"(__kir) : "rI"(shift), "r"(val));	\
     __kir; })
# define __kernel_extbl(val, shift)					\
  ({ unsigned long __kir;						\
     __asm__("extbl %2,%1,%0" : "=r"(__kir) : "rI"(shift), "r"(val));	\
     __kir; })
# define __kernel_extwl(val, shift)					\
  ({ unsigned long __kir;						\
     __asm__("extwl %2,%1,%0" : "=r"(__kir) : "rI"(shift), "r"(val));	\
     __kir; })
# define __kernel_cmpbge(a, b)						\
  ({ unsigned long __kir;						\
     __asm__("cmpbge %r2,%1,%0" : "=r"(__kir) : "rI"(b), "rJ"(a));	\
     __kir; })
#endif

#ifdef __alpha_cix__
# if __GNUC__ == 3 && __GNUC_MINOR__ >= 4 || __GNUC__ > 3
#  define __kernel_cttz(x)		__builtin_ctzl(x)
#  define __kernel_ctlz(x)		__builtin_clzl(x)
#  define __kernel_ctpop(x)		__builtin_popcountl(x)
# else
#  define __kernel_cttz(x)						\
   ({ unsigned long __kir;						\
      __asm__("cttz %1,%0" : "=r"(__kir) : "r"(x));			\
      __kir; })
#  define __kernel_ctlz(x)						\
   ({ unsigned long __kir;						\
      __asm__("ctlz %1,%0" : "=r"(__kir) : "r"(x));			\
      __kir; })
#  define __kernel_ctpop(x)						\
   ({ unsigned long __kir;						\
      __asm__("ctpop %1,%0" : "=r"(__kir) : "r"(x));			\
      __kir; })
# endif
#else
# define __kernel_cttz(x)						\
  ({ unsigned long __kir;						\
     __asm__(".arch ev67; cttz %1,%0" : "=r"(__kir) : "r"(x));		\
     __kir; })
# define __kernel_ctlz(x)						\
  ({ unsigned long __kir;						\
     __asm__(".arch ev67; ctlz %1,%0" : "=r"(__kir) : "r"(x));		\
     __kir; })
# define __kernel_ctpop(x)						\
  ({ unsigned long __kir;						\
     __asm__(".arch ev67; ctpop %1,%0" : "=r"(__kir) : "r"(x));		\
     __kir; })
#endif

/* 
 * Beginning with EGCS 1.1, GCC defines __alpha_bwx__ when the BWX 
 * extension is enabled.  Previous versions did not define anything
 * we could test during compilation -- too bad, so sad.
 */

#if defined(__alpha_bwx__)
#define __kernel_ldbu(mem)	(mem)
#define __kernel_ldwu(mem)	(mem)
#define __kernel_stb(val,mem)	((mem) = (val))
#define __kernel_stw(val,mem)	((mem) = (val))
#else
#define __kernel_ldbu(mem)				\
  ({ unsigned char __kir;				\
     __asm__(".arch ev56;				\
	      ldbu %0,%1" : "=r"(__kir) : "m"(mem));	\
     __kir; })
#define __kernel_ldwu(mem)				\
  ({ unsigned short __kir;				\
     __asm__(".arch ev56;				\
	      ldwu %0,%1" : "=r"(__kir) : "m"(mem));	\
     __kir; })
#define __kernel_stb(val,mem)				\
  __asm__(".arch ev56;					\
	   stb %1,%0" : "=m"(mem) : "r"(val))
#define __kernel_stw(val,mem)				\
  __asm__(".arch ev56;					\
	   stw %1,%0" : "=m"(mem) : "r"(val))
#endif

#endif /* _UAPI__ALPHA_COMPILER_H */

CANCEL

Name	Type	Size	Modified	Actions
↩ ..	DIR	—	—
📄 a.out.h	H	2 KB	2024-03-10 20:38	EDIT
📄 auxvec.h	H	774 B	2024-03-10 20:38	EDIT
📄 bitsperlong.h	H	237 B	2024-03-10 20:38	EDIT
📄 byteorder.h	H	194 B	2024-03-10 20:38	EDIT
📄 compiler.h	H	4.1 KB	2024-03-10 20:38	EDIT
📄 console.h	H	1.2 KB	2024-03-10 20:38	EDIT
📄 errno.h	H	5.3 KB	2024-03-10 20:38	EDIT
📄 fcntl.h	H	1.9 KB	2024-03-10 20:38	EDIT
📄 fpu.h	H	4.5 KB	2024-03-10 20:38	EDIT
📄 gentrap.h	H	1.4 KB	2024-03-10 20:38	EDIT
📄 ioctl.h	H	2.3 KB	2024-03-10 20:38	EDIT
📄 ioctls.h	H	4.4 KB	2024-03-10 20:38	EDIT
📄 Kbuild	?	62 B	2024-03-10 20:38	EDIT
📄 mman.h	H	3.8 KB	2024-03-10 20:38	EDIT
📄 pal.h	H	1 KB	2024-03-10 20:38	EDIT
📄 param.h	H	313 B	2024-03-10 20:38	EDIT
📄 posix_types.h	H	513 B	2024-03-10 20:38	EDIT
📄 ptrace.h	H	1.8 KB	2025-11-21 22:00	EDIT
📄 reg.h	H	1005 B	2024-03-10 20:38	EDIT
📄 regdef.h	H	1 KB	2024-03-10 20:38	EDIT
📄 resource.h	H	761 B	2024-03-10 20:38	EDIT
📄 setup.h	H	187 B	2024-03-10 20:38	EDIT
📄 sigcontext.h	H	891 B	2024-03-10 20:38	EDIT
📄 siginfo.h	H	155 B	2024-03-10 20:38	EDIT
📄 signal.h	H	2.5 KB	2024-03-10 20:38	EDIT
📄 socket.h	H	3.9 KB	2024-03-10 20:38	EDIT
📄 sockios.h	H	505 B	2024-03-10 20:38	EDIT
📄 stat.h	H	1 KB	2024-03-10 20:38	EDIT
📄 statfs.h	H	314 B	2024-03-10 20:38	EDIT
📄 swab.h	H	1.2 KB	2024-03-10 20:38	EDIT
📄 sysinfo.h	H	775 B	2024-03-10 20:38	EDIT
📄 termbits.h	H	4.1 KB	2024-03-10 20:38	EDIT
📄 termios.h	H	1.5 KB	2024-03-10 20:38	EDIT
📄 types.h	H	884 B	2024-03-10 20:38	EDIT
📄 unistd.h	H	516 B	2024-03-10 20:38	EDIT