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00046 #ifndef _RTAI_ASM_PPC_SYSCALL_H
00047 #define _RTAI_ASM_PPC_SYSCALL_H
00048
00049 #include <rtai_config.h>
00050 #include <asm/ptrace.h>
00051
00052
00053
00054
00055
00056
00057
00058
00059
00060
00061
00062 #define __xn_sys_mux 555
00063
00064 #define __xn_sys_attach 0
00065 #define __xn_sys_detach 1
00066 #define __xn_sys_sync 2
00067 #define __xn_sys_migrate 3
00068 #define __xn_sys_barrier 4
00069 #ifdef CONFIG_RTAI_OPT_TIMESTAMPS
00070 #define __xn_sys_timestamps 5
00071 #endif
00072
00073 #define XENOMAI_DO_SYSCALL(nr, id, op, args...) \
00074 ({ \
00075 register unsigned long __sc_0 __asm__ ("r0"); \
00076 register unsigned long __sc_3 __asm__ ("r3"); \
00077 register unsigned long __sc_4 __asm__ ("r4"); \
00078 register unsigned long __sc_5 __asm__ ("r5"); \
00079 register unsigned long __sc_6 __asm__ ("r6"); \
00080 register unsigned long __sc_7 __asm__ ("r7"); \
00081 \
00082 LOADARGS_##nr(__xn_mux_code(id,op), args); \
00083 __asm__ __volatile__ \
00084 ("sc \n\t" \
00085 "mfcr %0 " \
00086 : "=&r" (__sc_0), \
00087 "=&r" (__sc_3), "=&r" (__sc_4), \
00088 "=&r" (__sc_5), "=&r" (__sc_6), \
00089 "=&r" (__sc_7) \
00090 : ASM_INPUT_##nr \
00091 : "cr0", "ctr", "memory", \
00092 "r8", "r9", "r10","r11", "r12"); \
00093 (int)((__sc_0 & (1 << 28)) ? -__sc_3 : __sc_3); \
00094 })
00095
00096 #define LOADARGS_0(muxcode, dummy...) \
00097 __sc_0 = muxcode
00098 #define LOADARGS_1(muxcode, arg1) \
00099 LOADARGS_0(muxcode); \
00100 __sc_3 = (unsigned long) (arg1)
00101 #define LOADARGS_2(muxcode, arg1, arg2) \
00102 LOADARGS_1(muxcode, arg1); \
00103 __sc_4 = (unsigned long) (arg2)
00104 #define LOADARGS_3(muxcode, arg1, arg2, arg3) \
00105 LOADARGS_2(muxcode, arg1, arg2); \
00106 __sc_5 = (unsigned long) (arg3)
00107 #define LOADARGS_4(muxcode, arg1, arg2, arg3, arg4) \
00108 LOADARGS_3(muxcode, arg1, arg2, arg3); \
00109 __sc_6 = (unsigned long) (arg4)
00110 #define LOADARGS_5(muxcode, arg1, arg2, arg3, arg4, arg5) \
00111 LOADARGS_4(muxcode, arg1, arg2, arg3, arg4); \
00112 __sc_7 = (unsigned long) (arg5)
00113
00114 #define ASM_INPUT_0 "0" (__sc_0)
00115 #define ASM_INPUT_1 ASM_INPUT_0, "1" (__sc_3)
00116 #define ASM_INPUT_2 ASM_INPUT_1, "2" (__sc_4)
00117 #define ASM_INPUT_3 ASM_INPUT_2, "3" (__sc_5)
00118 #define ASM_INPUT_4 ASM_INPUT_3, "4" (__sc_6)
00119 #define ASM_INPUT_5 ASM_INPUT_4, "5" (__sc_7)
00120
00121
00122
00123 #define __xn_reg_mux(regs) ((regs)->gpr[0])
00124 #define __xn_reg_rval(regs) ((regs)->gpr[3])
00125 #define __xn_reg_arg1(regs) ((regs)->gpr[3])
00126 #define __xn_reg_arg2(regs) ((regs)->gpr[4])
00127 #define __xn_reg_arg3(regs) ((regs)->gpr[5])
00128 #define __xn_reg_arg4(regs) ((regs)->gpr[6])
00129 #define __xn_reg_arg5(regs) ((regs)->gpr[7])
00130
00131 #define __xn_reg_mux_p(regs) ((__xn_reg_mux(regs) & 0xffff) == __xn_sys_mux)
00132 #define __xn_mux_id(regs) ((__xn_reg_mux(regs) >> 16) & 0xff)
00133 #define __xn_mux_op(regs) ((__xn_reg_mux(regs) >> 24) & 0xff)
00134 #define __xn_mux_code(id,op) ((op << 24)|((id << 16) & 0xff0000)|(__xn_sys_mux & 0xffff))
00135
00136 #define XENOMAI_SYSCALL0(op) XENOMAI_DO_SYSCALL(0,0,op)
00137 #define XENOMAI_SYSCALL1(op,a1) XENOMAI_DO_SYSCALL(1,0,op,a1)
00138 #define XENOMAI_SYSCALL2(op,a1,a2) XENOMAI_DO_SYSCALL(2,0,op,a1,a2)
00139 #define XENOMAI_SYSCALL3(op,a1,a2,a3) XENOMAI_DO_SYSCALL(3,0,op,a1,a2,a3)
00140 #define XENOMAI_SYSCALL4(op,a1,a2,a3,a4) XENOMAI_DO_SYSCALL(4,0,op,a1,a2,a3,a4)
00141 #define XENOMAI_SYSCALL5(op,a1,a2,a3,a4,a5) XENOMAI_DO_SYSCALL(5,0,op,a1,a2,a3,a4,a5)
00142
00143 #define XENOMAI_SKINCALL0(id,op) XENOMAI_DO_SYSCALL(0,id,op)
00144 #define XENOMAI_SKINCALL1(id,op,a1) XENOMAI_DO_SYSCALL(1,id,op,a1)
00145 #define XENOMAI_SKINCALL2(id,op,a1,a2) XENOMAI_DO_SYSCALL(2,id,op,a1,a2)
00146 #define XENOMAI_SKINCALL3(id,op,a1,a2,a3) XENOMAI_DO_SYSCALL(3,id,op,a1,a2,a3)
00147 #define XENOMAI_SKINCALL4(id,op,a1,a2,a3,a4) XENOMAI_DO_SYSCALL(4,id,op,a1,a2,a3,a4)
00148 #define XENOMAI_SKINCALL5(id,op,a1,a2,a3,a4,a5) XENOMAI_DO_SYSCALL(5,id,op,a1,a2,a3,a4,a5)
00149
00150 typedef struct xnsysinfo {
00151
00152 unsigned long long cpufreq;
00153 unsigned long tickval;
00154
00155 } xnsysinfo_t;
00156
00157 typedef struct xninquiry {
00158
00159 char name[32];
00160 int prio;
00161 unsigned long status;
00162 void *khandle;
00163 void *uhandle;
00164
00165 } xninquiry_t;
00166
00167 struct task_struct;
00168
00169 #ifdef __KERNEL__
00170
00171 #include <linux/errno.h>
00172 #include <asm/uaccess.h>
00173
00174 #define __xn_copy_from_user(task,dstP,srcP,n) __copy_from_user(dstP,srcP,n)
00175 #define __xn_copy_to_user(task,dstP,srcP,n) __copy_to_user(dstP,srcP,n)
00176 #define __xn_put_user(task,src,dstP) __put_user(src,dstP)
00177 #define __xn_get_user(task,dst,srcP) __get_user(dst,srcP)
00178
00179 #define __xn_range_ok(task,addr,size) \
00180 ((addr) <= (task)->thread.fs.seg \
00181 && ((size) == 0 || (size) - 1 <= (task)->thread.fs.seg - (addr)))
00182
00183 #define __xn_access_ok(task,type,addr,size) __xn_range_ok(task,(unsigned long)addr,size)
00184
00185 #define XNARCH_MAX_SYSENT 255
00186
00187 typedef struct _xnsysent {
00188
00189 int (*svc)(struct task_struct *task,
00190 struct pt_regs *regs);
00191
00192
00193 #define __xn_flag_lostage 0x1
00194
00195 #define __xn_flag_histage 0x2
00196
00197 #define __xn_flag_shadow 0x4
00198
00199 #define __xn_flag_anycall 0x0
00200
00201 #define __xn_flag_init __xn_flag_lostage
00202
00203 #define __xn_flag_regular (__xn_flag_shadow|__xn_flag_histage)
00204
00205 u_long flags;
00206
00207 } xnsysent_t;
00208
00209 extern int nkgkptd;
00210
00211 #define xnshadow_ptd(t) ((t)->ptd[nkgkptd])
00212 #define xnshadow_thread(t) ((xnthread_t *)xnshadow_ptd(t))
00213
00214
00215
00216
00217 static inline void __xn_success_return(struct pt_regs *regs, int v) {
00218 __xn_reg_rval(regs) = v;
00219 }
00220
00221 static inline void __xn_error_return(struct pt_regs *regs, int v) {
00222 __xn_reg_rval(regs) = v;
00223 }
00224
00225 static inline void __xn_status_return(struct pt_regs *regs, int v) {
00226 __xn_reg_rval(regs) = v;
00227 }
00228
00229 static inline int __xn_interrupted_p(struct pt_regs *regs) {
00230 return __xn_reg_rval(regs) == -EINTR;
00231 }
00232
00233 #else
00234
00235 #define CONFIG_RTAI_HW_DIRECT_TSC 1
00236
00237 static inline unsigned long long __xn_rdtsc (void)
00238
00239 {
00240 unsigned long long t;
00241 unsigned long __tbu;
00242
00243 __asm__ __volatile__ ("1: mftbu %0\n"
00244 "mftb %1\n"
00245 "mftbu %2\n"
00246 "cmpw %2,%0\n"
00247 "bne- 1b\n"
00248 :"=r" (((unsigned long *)&t)[0]),
00249 "=r" (((unsigned long *)&t)[1]),
00250 "=r" (__tbu));
00251 return t;
00252 }
00253
00254 #endif
00255
00256 #endif