1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 | /* * Register definitions for the Hexagon architecture */ #ifndef _ASM_REGISTERS_H #define _ASM_REGISTERS_H #ifndef __ASSEMBLY__ /* See kernel/entry.S for further documentation. */ /* * Entry code copies the event record out of guest registers into * this structure (which is on the stack). */ struct hvm_event_record { unsigned long vmel; /* Event Linkage (return address) */ unsigned long vmest; /* Event context - pre-event SSR values */ unsigned long vmpsp; /* Previous stack pointer */ unsigned long vmbadva; /* Bad virtual address for addressing events */ }; struct pt_regs { long restart_r0; /* R0 checkpoint for syscall restart */ long syscall_nr; /* Only used in system calls */ union { struct { unsigned long usr; unsigned long preds; }; long long int predsusr; }; union { struct { unsigned long m0; unsigned long m1; }; long long int m1m0; }; union { struct { unsigned long sa1; unsigned long lc1; }; long long int lc1sa1; }; union { struct { unsigned long sa0; unsigned long lc0; }; long long int lc0sa0; }; union { struct { unsigned long ugp; unsigned long gp; }; long long int gpugp; }; union { struct { unsigned long cs0; unsigned long cs1; }; long long int cs1cs0; }; /* * Be extremely careful with rearranging these, if at all. Some code * assumes the 32 registers exist exactly like this in memory; * e.g. kernel/ptrace.c * e.g. kernel/signal.c (restore_sigcontext) */ union { struct { unsigned long r00; unsigned long r01; }; long long int r0100; }; union { struct { unsigned long r02; unsigned long r03; }; long long int r0302; }; union { struct { unsigned long r04; unsigned long r05; }; long long int r0504; }; union { struct { unsigned long r06; unsigned long r07; }; long long int r0706; }; union { struct { unsigned long r08; unsigned long r09; }; long long int r0908; }; union { struct { unsigned long r10; unsigned long r11; }; long long int r1110; }; union { struct { unsigned long r12; unsigned long r13; }; long long int r1312; }; union { struct { unsigned long r14; unsigned long r15; }; long long int r1514; }; union { struct { unsigned long r16; unsigned long r17; }; long long int r1716; }; union { struct { unsigned long r18; unsigned long r19; }; long long int r1918; }; union { struct { unsigned long r20; unsigned long r21; }; long long int r2120; }; union { struct { unsigned long r22; unsigned long r23; }; long long int r2322; }; union { struct { unsigned long r24; unsigned long r25; }; long long int r2524; }; union { struct { unsigned long r26; unsigned long r27; }; long long int r2726; }; union { struct { unsigned long r28; unsigned long r29; }; long long int r2928; }; union { struct { unsigned long r30; unsigned long r31; }; long long int r3130; }; /* VM dispatch pushes event record onto stack - we can build on it */ struct hvm_event_record hvmer; }; /* Defines to conveniently access the values */ /* * As of the VM spec 0.5, these registers are now set/retrieved via a * VM call. On the in-bound side, we just fetch the values * at the entry points and stuff them into the old record in pt_regs. * However, on the outbound side, probably at VM rte, we set the * registers back. */ #define pt_elr(regs) ((regs)->hvmer.vmel) #define pt_set_elr(regs, val) ((regs)->hvmer.vmel = (val)) #define pt_cause(regs) ((regs)->hvmer.vmest & (HVM_VMEST_CAUSE_MSK)) #define user_mode(regs) \ (((regs)->hvmer.vmest & (HVM_VMEST_UM_MSK << HVM_VMEST_UM_SFT)) != 0) #define ints_enabled(regs) \ (((regs)->hvmer.vmest & (HVM_VMEST_IE_MSK << HVM_VMEST_IE_SFT)) != 0) #define pt_psp(regs) ((regs)->hvmer.vmpsp) #define pt_badva(regs) ((regs)->hvmer.vmbadva) #define pt_set_singlestep(regs) ((regs)->hvmer.vmest |= (1<<HVM_VMEST_SS_SFT)) #define pt_clr_singlestep(regs) ((regs)->hvmer.vmest &= ~(1<<HVM_VMEST_SS_SFT)) #define pt_set_rte_sp(regs, sp) do {\ pt_psp(regs) = (regs)->r29 = (sp);\ } while (0) #define pt_set_kmode(regs) \ (regs)->hvmer.vmest = (HVM_VMEST_IE_MSK << HVM_VMEST_IE_SFT) #define pt_set_usermode(regs) \ (regs)->hvmer.vmest = (HVM_VMEST_UM_MSK << HVM_VMEST_UM_SFT) \ | (HVM_VMEST_IE_MSK << HVM_VMEST_IE_SFT) #endif /* ifndef __ASSEMBLY */ #endif |