00001
00015 #ifndef __QOS_UL_I386_H__
00016 #define __QOS_UL_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 ul_shl_div(num, SHF, den) ({ \
00042 __volatile__ __u32 _ul_num = (num); \
00043 __volatile__ __u32 _ul_den = (den); \
00044 __volatile__ __u32 _ul_res; \
00045 __asm__ __volatile__("\n" \
00046 " xorl %%edx, %%edx \n" \
00047 " shldl %2, %%eax, %%edx \n" \
00048 " shll %2, %%eax \n" \
00049 " divl %3 \n" \
00050 : "=a" (_ul_res) \
00051 : "0" (_ul_num), "I" ((SHF)), "r" (_ul_den) \
00052 : "%edx"); \
00053 _ul_res; \
00054 })
00055
00062 #define ul_shl_ceil(num, SHF, den) ({ \
00063 __volatile__ __u32 _ul_num = (num); \
00064 __volatile__ __u32 _ul_den = (den); \
00065 __volatile__ __u32 _ul_res; \
00066 __asm__ __volatile__("\n" \
00067 " xorl %%edx, %%edx \n" \
00068 " shldl %2, %%eax, %%edx \n" \
00069 " shll %2, %%eax \n" \
00070 " divl %3 \n" \
00071 " cmpl $0,%%edx \n" \
00072 " jz 0f \n" \
00073 " incl %%eax \n" \
00074 "0:\n" \
00075 : "=a" (_ul_res) \
00076 : "0" (_ul_num), "I" ((SHF)), "r" (_ul_den) \
00077 : "%edx"); \
00078 _ul_res; \
00079 })
00080
00081
00097 #define ul_mul_div(x, num, den) ({ \
00098 __volatile__ __u32 _ul_x = (x); \
00099 __volatile__ __u32 _ul_num = (num); \
00100 __volatile__ __u32 _ul_den = (den); \
00101 __volatile__ __u32 _ul_res; \
00102 __asm__ __volatile__("\n" \
00103 " mull %%edx \n" \
00104 " divl %3 \n" \
00105 : "=a" (_ul_res) \
00106 : "0" (_ul_x), "d" (_ul_num), "r" (_ul_den)); \
00107 _ul_res; \
00108 })
00109
00110
00130 #define ul_mul_shr(x, y, SHF) ({ \
00131 __volatile__ __u32 _ul_x = (x); \
00132 __volatile__ __u32 _ul_y = (y); \
00133 __volatile__ __u32 _ul_res; \
00134 __asm__ __volatile__ ("\n" \
00135 " mull %%edx \n" \
00136 " shrdl %2, %%edx, %%eax \n" \
00137 : "=a" (_ul_res) \
00138 : "0" (_ul_x), "I" ((SHF)), "d" (_ul_y)); \
00139 _ul_res; \
00140 })
00141
00142 #endif
