| #ifndef _ASM_IA64_INTRINSICS_H |
| #define _ASM_IA64_INTRINSICS_H |
| |
| /* |
| * Compiler-dependent intrinsics. |
| * |
| * Copyright (C) 2002-2003 Hewlett-Packard Co |
| * David Mosberger-Tang <davidm@hpl.hp.com> |
| */ |
| |
| #ifndef __ASSEMBLY__ |
| |
| #include <linux/types.h> |
| /* include compiler specific intrinsics */ |
| #include <asm/ia64regs.h> |
| #ifdef __INTEL_COMPILER |
| # include <asm/intel_intrin.h> |
| #else |
| # include <asm/gcc_intrin.h> |
| #endif |
| |
| #define ia64_native_get_psr_i() (ia64_native_getreg(_IA64_REG_PSR) & IA64_PSR_I) |
| |
| #define ia64_native_set_rr0_to_rr4(val0, val1, val2, val3, val4) \ |
| do { \ |
| ia64_native_set_rr(0x0000000000000000UL, (val0)); \ |
| ia64_native_set_rr(0x2000000000000000UL, (val1)); \ |
| ia64_native_set_rr(0x4000000000000000UL, (val2)); \ |
| ia64_native_set_rr(0x6000000000000000UL, (val3)); \ |
| ia64_native_set_rr(0x8000000000000000UL, (val4)); \ |
| } while (0) |
| |
| /* |
| * Force an unresolved reference if someone tries to use |
| * ia64_fetch_and_add() with a bad value. |
| */ |
| extern unsigned long __bad_size_for_ia64_fetch_and_add (void); |
| extern unsigned long __bad_increment_for_ia64_fetch_and_add (void); |
| |
| #define IA64_FETCHADD(tmp,v,n,sz,sem) \ |
| ({ \ |
| switch (sz) { \ |
| case 4: \ |
| tmp = ia64_fetchadd4_##sem((unsigned int *) v, n); \ |
| break; \ |
| \ |
| case 8: \ |
| tmp = ia64_fetchadd8_##sem((unsigned long *) v, n); \ |
| break; \ |
| \ |
| default: \ |
| __bad_size_for_ia64_fetch_and_add(); \ |
| } \ |
| }) |
| |
| #define ia64_fetchadd(i,v,sem) \ |
| ({ \ |
| __u64 _tmp; \ |
| volatile __typeof__(*(v)) *_v = (v); \ |
| /* Can't use a switch () here: gcc isn't always smart enough for that... */ \ |
| if ((i) == -16) \ |
| IA64_FETCHADD(_tmp, _v, -16, sizeof(*(v)), sem); \ |
| else if ((i) == -8) \ |
| IA64_FETCHADD(_tmp, _v, -8, sizeof(*(v)), sem); \ |
| else if ((i) == -4) \ |
| IA64_FETCHADD(_tmp, _v, -4, sizeof(*(v)), sem); \ |
| else if ((i) == -1) \ |
| IA64_FETCHADD(_tmp, _v, -1, sizeof(*(v)), sem); \ |
| else if ((i) == 1) \ |
| IA64_FETCHADD(_tmp, _v, 1, sizeof(*(v)), sem); \ |
| else if ((i) == 4) \ |
| IA64_FETCHADD(_tmp, _v, 4, sizeof(*(v)), sem); \ |
| else if ((i) == 8) \ |
| IA64_FETCHADD(_tmp, _v, 8, sizeof(*(v)), sem); \ |
| else if ((i) == 16) \ |
| IA64_FETCHADD(_tmp, _v, 16, sizeof(*(v)), sem); \ |
| else \ |
| _tmp = __bad_increment_for_ia64_fetch_and_add(); \ |
| (__typeof__(*(v))) (_tmp); /* return old value */ \ |
| }) |
| |
| #define ia64_fetch_and_add(i,v) (ia64_fetchadd(i, v, rel) + (i)) /* return new value */ |
| |
| /* |
| * This function doesn't exist, so you'll get a linker error if |
| * something tries to do an invalid xchg(). |
| */ |
| extern void ia64_xchg_called_with_bad_pointer (void); |
| |
| #define __xchg(x,ptr,size) \ |
| ({ \ |
| unsigned long __xchg_result; \ |
| \ |
| switch (size) { \ |
| case 1: \ |
| __xchg_result = ia64_xchg1((__u8 *)ptr, x); \ |
| break; \ |
| \ |
| case 2: \ |
| __xchg_result = ia64_xchg2((__u16 *)ptr, x); \ |
| break; \ |
| \ |
| case 4: \ |
| __xchg_result = ia64_xchg4((__u32 *)ptr, x); \ |
| break; \ |
| \ |
| case 8: \ |
| __xchg_result = ia64_xchg8((__u64 *)ptr, x); \ |
| break; \ |
| default: \ |
| ia64_xchg_called_with_bad_pointer(); \ |
| } \ |
| __xchg_result; \ |
| }) |
| |
| #define xchg(ptr,x) \ |
| ((__typeof__(*(ptr))) __xchg ((unsigned long) (x), (ptr), sizeof(*(ptr)))) |
| |
| /* |
| * Atomic compare and exchange. Compare OLD with MEM, if identical, |
| * store NEW in MEM. Return the initial value in MEM. Success is |
| * indicated by comparing RETURN with OLD. |
| */ |
| |
| #define __HAVE_ARCH_CMPXCHG 1 |
| |
| /* |
| * This function doesn't exist, so you'll get a linker error |
| * if something tries to do an invalid cmpxchg(). |
| */ |
| extern long ia64_cmpxchg_called_with_bad_pointer (void); |
| |
| #define ia64_cmpxchg(sem,ptr,old,new,size) \ |
| ({ \ |
| __u64 _o_, _r_; \ |
| \ |
| switch (size) { \ |
| case 1: _o_ = (__u8 ) (long) (old); break; \ |
| case 2: _o_ = (__u16) (long) (old); break; \ |
| case 4: _o_ = (__u32) (long) (old); break; \ |
| case 8: _o_ = (__u64) (long) (old); break; \ |
| default: break; \ |
| } \ |
| switch (size) { \ |
| case 1: \ |
| _r_ = ia64_cmpxchg1_##sem((__u8 *) ptr, new, _o_); \ |
| break; \ |
| \ |
| case 2: \ |
| _r_ = ia64_cmpxchg2_##sem((__u16 *) ptr, new, _o_); \ |
| break; \ |
| \ |
| case 4: \ |
| _r_ = ia64_cmpxchg4_##sem((__u32 *) ptr, new, _o_); \ |
| break; \ |
| \ |
| case 8: \ |
| _r_ = ia64_cmpxchg8_##sem((__u64 *) ptr, new, _o_); \ |
| break; \ |
| \ |
| default: \ |
| _r_ = ia64_cmpxchg_called_with_bad_pointer(); \ |
| break; \ |
| } \ |
| (__typeof__(old)) _r_; \ |
| }) |
| |
| #define cmpxchg_acq(ptr, o, n) \ |
| ia64_cmpxchg(acq, (ptr), (o), (n), sizeof(*(ptr))) |
| #define cmpxchg_rel(ptr, o, n) \ |
| ia64_cmpxchg(rel, (ptr), (o), (n), sizeof(*(ptr))) |
| |
| /* for compatibility with other platforms: */ |
| #define cmpxchg(ptr, o, n) cmpxchg_acq((ptr), (o), (n)) |
| #define cmpxchg64(ptr, o, n) cmpxchg_acq((ptr), (o), (n)) |
| |
| #define cmpxchg_local cmpxchg |
| #define cmpxchg64_local cmpxchg64 |
| |
| #ifdef CONFIG_IA64_DEBUG_CMPXCHG |
| # define CMPXCHG_BUGCHECK_DECL int _cmpxchg_bugcheck_count = 128; |
| # define CMPXCHG_BUGCHECK(v) \ |
| do { \ |
| if (_cmpxchg_bugcheck_count-- <= 0) { \ |
| void *ip; \ |
| extern int printk(const char *fmt, ...); \ |
| ip = (void *) ia64_getreg(_IA64_REG_IP); \ |
| printk("CMPXCHG_BUGCHECK: stuck at %p on word %p\n", ip, (v)); \ |
| break; \ |
| } \ |
| } while (0) |
| #else /* !CONFIG_IA64_DEBUG_CMPXCHG */ |
| # define CMPXCHG_BUGCHECK_DECL |
| # define CMPXCHG_BUGCHECK(v) |
| #endif /* !CONFIG_IA64_DEBUG_CMPXCHG */ |
| |
| #endif |
| |
| #ifdef __KERNEL__ |
| #include <asm/paravirt_privop.h> |
| #endif |
| |
| #ifndef __ASSEMBLY__ |
| #if defined(CONFIG_PARAVIRT) && defined(__KERNEL__) |
| #define IA64_INTRINSIC_API(name) pv_cpu_ops.name |
| #define IA64_INTRINSIC_MACRO(name) paravirt_ ## name |
| #else |
| #define IA64_INTRINSIC_API(name) ia64_native_ ## name |
| #define IA64_INTRINSIC_MACRO(name) ia64_native_ ## name |
| #endif |
| |
| /************************************************/ |
| /* Instructions paravirtualized for correctness */ |
| /************************************************/ |
| /* fc, thash, get_cpuid, get_pmd, get_eflags, set_eflags */ |
| /* Note that "ttag" and "cover" are also privilege-sensitive; "ttag" |
| * is not currently used (though it may be in a long-format VHPT system!) |
| */ |
| #define ia64_fc IA64_INTRINSIC_API(fc) |
| #define ia64_thash IA64_INTRINSIC_API(thash) |
| #define ia64_get_cpuid IA64_INTRINSIC_API(get_cpuid) |
| #define ia64_get_pmd IA64_INTRINSIC_API(get_pmd) |
| |
| |
| /************************************************/ |
| /* Instructions paravirtualized for performance */ |
| /************************************************/ |
| #define ia64_ssm IA64_INTRINSIC_MACRO(ssm) |
| #define ia64_rsm IA64_INTRINSIC_MACRO(rsm) |
| #define ia64_getreg IA64_INTRINSIC_MACRO(getreg) |
| #define ia64_setreg IA64_INTRINSIC_API(setreg) |
| #define ia64_set_rr IA64_INTRINSIC_API(set_rr) |
| #define ia64_get_rr IA64_INTRINSIC_API(get_rr) |
| #define ia64_ptcga IA64_INTRINSIC_API(ptcga) |
| #define ia64_get_psr_i IA64_INTRINSIC_API(get_psr_i) |
| #define ia64_intrin_local_irq_restore \ |
| IA64_INTRINSIC_API(intrin_local_irq_restore) |
| #define ia64_set_rr0_to_rr4 IA64_INTRINSIC_API(set_rr0_to_rr4) |
| |
| #endif /* !__ASSEMBLY__ */ |
| |
| #endif /* _ASM_IA64_INTRINSICS_H */ |
