00001
00015 #ifndef __QOS_L_I386_H__
00016 #define __QOS_L_I386_H__
00017
00018 #ifndef __i386__
00019 # error "This module only works for i386 architectures"
00020 #endif
00021
00022 #include <linux/types.h>
00023
00041 #define l_shl_div(num, SHF, den) ({ \
00042 __volatile__ __s32 _ul_num = (num); \
00043 __volatile__ __s32 _ul_den = (den); \
00044 __volatile__ __s32 _ul_res; \
00045 __asm__ __volatile__("\n" \
00046 " cdq \n" \
00047 " shldl %2, %%eax, %%edx \n" \
00048 " shll %2, %%eax \n" \
00049 " idivl %3 \n" \
00050 : "=a" (_ul_res) \
00051 : "0" (_ul_num), "I" ((SHF)), "r" (_ul_den) \
00052 : "%edx"); \
00053 _ul_res; \
00054 })
00055
00056
00072 #define l_mul_div(x, num, den) ({ \
00073 __volatile__ __s32 _ul_x = (x); \
00074 __volatile__ __s32 _ul_num = (num); \
00075 __volatile__ __s32 _ul_den = (den); \
00076 __volatile__ __s32 _ul_res; \
00077 __asm__ __volatile__("\n" \
00078 " imull %%edx \n" \
00079 " idivl %3 \n" \
00080 : "=a" (_ul_res) \
00081 : "0" (_ul_x), "d" (_ul_num), "r" (_ul_den)); \
00082 _ul_res; \
00083 })
00084
00085
00105 #define l_mul_shr(x, y, SHF) ({ \
00106 __volatile__ __s32 _ul_x = (x); \
00107 __volatile__ __s32 _ul_y = (y); \
00108 __volatile__ __s32 _ul_res; \
00109 __asm__ __volatile__ ("\n" \
00110 " imull %%edx \n" \
00111 " shrdl %2, %%edx, %%eax \n" \
00112 : "=a" (_ul_res) \
00113 : "0" (_ul_x), "I" ((SHF)), "d" (_ul_y)); \
00114 _ul_res; \
00115 })
00116
00117 #endif
