| cpufunc.h (132888) | cpufunc.h (143063) |
|---|---|
| 1/*- 2 * Copyright (c) 2003 Peter Wemm. 3 * Copyright (c) 1993 The Regents of the University of California. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: --- 13 unchanged lines hidden (view full) --- 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * | 1/*- 2 * Copyright (c) 2003 Peter Wemm. 3 * Copyright (c) 1993 The Regents of the University of California. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: --- 13 unchanged lines hidden (view full) --- 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * |
| 30 * $FreeBSD: head/sys/amd64/include/cpufunc.h 132888 2004-07-30 16:44:29Z ps $ | 30 * $FreeBSD: head/sys/amd64/include/cpufunc.h 143063 2005-03-02 21:33:29Z joerg $ |
| 31 */ 32 33/* 34 * Functions to provide access to special i386 instructions. 35 * This in included in sys/systm.h, and that file should be 36 * used in preference to this. 37 */ 38 39#ifndef _MACHINE_CPUFUNC_H_ 40#define _MACHINE_CPUFUNC_H_ 41 | 31 */ 32 33/* 34 * Functions to provide access to special i386 instructions. 35 * This in included in sys/systm.h, and that file should be 36 * used in preference to this. 37 */ 38 39#ifndef _MACHINE_CPUFUNC_H_ 40#define _MACHINE_CPUFUNC_H_ 41 |
| 42#ifndef _SYS_CDEFS_H_ 43#error this file needs sys/cdefs.h as a prerequisite 44#endif 45 |
|
| 42struct region_descriptor; 43 44#define readb(va) (*(volatile u_int8_t *) (va)) 45#define readw(va) (*(volatile u_int16_t *) (va)) 46#define readl(va) (*(volatile u_int32_t *) (va)) 47#define readq(va) (*(volatile u_int64_t *) (va)) 48 49#define writeb(va, d) (*(volatile u_int8_t *) (va) = (d)) 50#define writew(va, d) (*(volatile u_int16_t *) (va) = (d)) 51#define writel(va, d) (*(volatile u_int32_t *) (va) = (d)) 52#define writeq(va, d) (*(volatile u_int64_t *) (va) = (d)) 53 | 46struct region_descriptor; 47 48#define readb(va) (*(volatile u_int8_t *) (va)) 49#define readw(va) (*(volatile u_int16_t *) (va)) 50#define readl(va) (*(volatile u_int32_t *) (va)) 51#define readq(va) (*(volatile u_int64_t *) (va)) 52 53#define writeb(va, d) (*(volatile u_int8_t *) (va) = (d)) 54#define writew(va, d) (*(volatile u_int16_t *) (va) = (d)) 55#define writel(va, d) (*(volatile u_int32_t *) (va) = (d)) 56#define writeq(va, d) (*(volatile u_int64_t *) (va) = (d)) 57 |
| 54#ifdef __GNUC__ | 58#if defined(__GNUCLIKE_ASM) && defined(__CC_SUPPORTS___INLINE) |
| 55 56static __inline void 57breakpoint(void) 58{ 59 __asm __volatile("int $3"); 60} 61 62static __inline u_int --- 84 unchanged lines hidden (view full) --- 147#endif /* _KERNEL */ 148 149static __inline void 150halt(void) 151{ 152 __asm __volatile("hlt"); 153} 154 | 59 60static __inline void 61breakpoint(void) 62{ 63 __asm __volatile("int $3"); 64} 65 66static __inline u_int --- 84 unchanged lines hidden (view full) --- 151#endif /* _KERNEL */ 152 153static __inline void 154halt(void) 155{ 156 __asm __volatile("hlt"); 157} 158 |
| 155#if __GNUC__ < 2 | 159#if !defined(__GNUCLIKE_BUILTIN_CONSTANT_P) || __GNUCLIKE_ASM < 3 |
| 156 157#define inb(port) inbv(port) 158#define outb(port, data) outbv(port, data) 159 | 160 161#define inb(port) inbv(port) 162#define outb(port, data) outbv(port, data) 163 |
| 160#else /* __GNUC >= 2 */ | 164#else /* __GNUCLIKE_BUILTIN_CONSTANT_P && __GNUCLIKE_ASM >= 3 */ |
| 161 162/* 163 * The following complications are to get around gcc not having a 164 * constraint letter for the range 0..255. We still put "d" in the 165 * constraint because "i" isn't a valid constraint when the port 166 * isn't constant. This only matters for -O0 because otherwise 167 * the non-working version gets optimized away. 168 * --- 30 unchanged lines hidden (view full) --- 199} 200 201static __inline void 202outbc(u_int port, u_char data) 203{ 204 __asm __volatile("outb %0,%1" : : "a" (data), "id" ((u_short)(port))); 205} 206 | 165 166/* 167 * The following complications are to get around gcc not having a 168 * constraint letter for the range 0..255. We still put "d" in the 169 * constraint because "i" isn't a valid constraint when the port 170 * isn't constant. This only matters for -O0 because otherwise 171 * the non-working version gets optimized away. 172 * --- 30 unchanged lines hidden (view full) --- 203} 204 205static __inline void 206outbc(u_int port, u_char data) 207{ 208 __asm __volatile("outb %0,%1" : : "a" (data), "id" ((u_short)(port))); 209} 210 |
| 207#endif /* __GNUC <= 2 */ | 211#endif /* __GNUCLIKE_BUILTIN_CONSTANT_P */ |
| 208 209static __inline u_char 210inbv(u_int port) 211{ 212 u_char data; 213 /* 214 * We use %%dx and not %1 here because i/o is done at %dx and not at 215 * %edx, while gcc generates inferior code (movw instead of movl) --- 475 unchanged lines hidden (view full) --- 691} 692 693static __inline void 694intr_restore(register_t rflags) 695{ 696 write_rflags(rflags); 697} 698 | 212 213static __inline u_char 214inbv(u_int port) 215{ 216 u_char data; 217 /* 218 * We use %%dx and not %1 here because i/o is done at %dx and not at 219 * %edx, while gcc generates inferior code (movw instead of movl) --- 475 unchanged lines hidden (view full) --- 695} 696 697static __inline void 698intr_restore(register_t rflags) 699{ 700 write_rflags(rflags); 701} 702 |
| 699#else /* !__GNUC__ */ | 703#else /* !(__GNUCLIKE_ASM && __CC_SUPPORTS___INLINE) */ |
| 700 701int breakpoint(void); 702u_int bsfl(u_int mask); 703u_int bsrl(u_int mask); 704void disable_intr(void); 705void do_cpuid(u_int ax, u_int *p); 706void enable_intr(void); 707void halt(void); --- 48 unchanged lines hidden (view full) --- 756u_int64_t rdtsc(void); 757u_int read_rflags(void); 758u_int rfs(void); 759u_int rgs(void); 760void wbinvd(void); 761void write_rflags(u_int rf); 762void wrmsr(u_int msr, u_int64_t newval); 763 | 704 705int breakpoint(void); 706u_int bsfl(u_int mask); 707u_int bsrl(u_int mask); 708void disable_intr(void); 709void do_cpuid(u_int ax, u_int *p); 710void enable_intr(void); 711void halt(void); --- 48 unchanged lines hidden (view full) --- 760u_int64_t rdtsc(void); 761u_int read_rflags(void); 762u_int rfs(void); 763u_int rgs(void); 764void wbinvd(void); 765void write_rflags(u_int rf); 766void wrmsr(u_int msr, u_int64_t newval); 767 |
| 764#endif /* __GNUC__ */ | 768#endif /* __GNUCLIKE_ASM && __CC_SUPPORTS___INLINE */ |
| 765 766void reset_dbregs(void); 767 768#endif /* !_MACHINE_CPUFUNC_H_ */ | 769 770void reset_dbregs(void); 771 772#endif /* !_MACHINE_CPUFUNC_H_ */ |