1 #include "go_asm.h" 2 #include "textflag.h" 3 4 TEXT _rt0_ppc64le_linux(SB),NOSPLIT,$0 5 XOR R0, R0 // Make sure R0 is zero before _main 6 BR _main<>(SB) 7 8 TEXT _rt0_ppc64le_linux_lib(SB),NOSPLIT,$-8 9 // Start with standard C stack frame layout and linkage. 10 MOVD LR, R0 11 MOVD R0, 16(R1) // Save LR in caller's frame. 12 MOVW CR, R0 // Save CR in caller's frame 13 MOVD R0, 8(R1) 14 MOVDU R1, -320(R1) // Allocate frame. 15 16 // Preserve callee-save registers. 17 MOVD R14, 24(R1) 18 MOVD R15, 32(R1) 19 MOVD R16, 40(R1) 20 MOVD R17, 48(R1) 21 MOVD R18, 56(R1) 22 MOVD R19, 64(R1) 23 MOVD R20, 72(R1) 24 MOVD R21, 80(R1) 25 MOVD R22, 88(R1) 26 MOVD R23, 96(R1) 27 MOVD R24, 104(R1) 28 MOVD R25, 112(R1) 29 MOVD R26, 120(R1) 30 MOVD R27, 128(R1) 31 MOVD R28, 136(R1) 32 MOVD R29, 144(R1) 33 MOVD g, 152(R1) // R30 34 MOVD R31, 160(R1) 35 FMOVD F14, 168(R1) 36 FMOVD F15, 176(R1) 37 FMOVD F16, 184(R1) 38 FMOVD F17, 192(R1) 39 FMOVD F18, 200(R1) 40 FMOVD F19, 208(R1) 41 FMOVD F20, 216(R1) 42 FMOVD F21, 224(R1) 43 FMOVD F22, 232(R1) 44 FMOVD F23, 240(R1) 45 FMOVD F24, 248(R1) 46 FMOVD F25, 256(R1) 47 FMOVD F26, 264(R1) 48 FMOVD F27, 272(R1) 49 FMOVD F28, 280(R1) 50 FMOVD F29, 288(R1) 51 FMOVD F30, 296(R1) 52 FMOVD F31, 304(R1) 53 54 MOVD R3, _rt0_ppc64le_linux_lib_argc<>(SB) 55 MOVD R4, _rt0_ppc64le_linux_lib_argv<>(SB) 56 57 // Synchronous initialization. 58 MOVD $runtimereginit(SB), R12 59 MOVD R12, CTR 60 BL (CTR) 61 MOVD $runtimelibpreinit(SB), R12 62 MOVD R12, CTR 63 BL (CTR) 64 65 // Create a new thread to do the runtime initialization and return. 66 MOVD _cgo_sys_thread_create(SB), R12 67 CMP $0, R12 68 BEQ nocgo 69 MOVD $_rt0_ppc64le_linux_lib_go(SB), R3 70 MOVD $0, R4 71 MOVD R12, CTR 72 BL (CTR) 73 BR done 74 75 nocgo: 76 MOVD $0x800000, R12 // stacksize = 8192KB 77 MOVD R12, 8(R1) 78 MOVD $_rt0_ppc64le_linux_lib_go(SB), R12 79 MOVD R12, 16(R1) 80 MOVD $runtimenewosproc0(SB),R12 81 MOVD R12, CTR 82 BL (CTR) 83 84 done: 85 // Restore saved registers. 86 MOVD 24(R1), R14 87 MOVD 32(R1), R15 88 MOVD 40(R1), R16 89 MOVD 48(R1), R17 90 MOVD 56(R1), R18 91 MOVD 64(R1), R19 92 MOVD 72(R1), R20 93 MOVD 80(R1), R21 94 MOVD 88(R1), R22 95 MOVD 96(R1), R23 96 MOVD 104(R1), R24 97 MOVD 112(R1), R25 98 MOVD 120(R1), R26 99 MOVD 128(R1), R27 100 MOVD 136(R1), R28 101 MOVD 144(R1), R29 102 MOVD 152(R1), g // R30 103 MOVD 160(R1), R31 104 FMOVD 168(R1), F14 105 FMOVD 176(R1), F15 106 FMOVD 184(R1), F16 107 FMOVD 192(R1), F17 108 FMOVD 200(R1), F18 109 FMOVD 208(R1), F19 110 FMOVD 216(R1), F20 111 FMOVD 224(R1), F21 112 FMOVD 232(R1), F22 113 FMOVD 240(R1), F23 114 FMOVD 248(R1), F24 115 FMOVD 256(R1), F25 116 FMOVD 264(R1), F26 117 FMOVD 272(R1), F27 118 FMOVD 280(R1), F28 119 FMOVD 288(R1), F29 120 FMOVD 296(R1), F30 121 FMOVD 304(R1), F31 122 123 ADD $320, R1 124 MOVD 8(R1), R0 125 MOVFL R0, $0xff 126 MOVD 16(R1), R0 127 MOVD R0, LR 128 RET 129 130 TEXT _rt0_ppc64le_linux_lib_go(SB),NOSPLIT,$0 131 MOVD _rt0_ppc64le_linux_lib_argc<>(SB), R3 132 MOVD _rt0_ppc64le_linux_lib_argv<>(SB), R4 133 MOVD $runtimert0_go(SB), R12 134 MOVD R12, CTR 135 BR (CTR) 136 137 DATA _rt0_ppc64le_linux_lib_argc<>(SB)/8, $0 138 GLOBL _rt0_ppc64le_linux_lib_argc<>(SB),NOPTR, $8 139 DATA _rt0_ppc64le_linux_lib_argv<>(SB)/8, $0 140 GLOBL _rt0_ppc64le_linux_lib_argv<>(SB),NOPTR, $8 141 142 TEXT _main<>(SB),NOSPLIT,$-8 143 // In a statically linked binary, the stack contains argc, 144 // argv as argc string pointers followed by a NULL, envv as a 145 // sequence of string pointers followed by a NULL, and auxv. 146 // There is no TLS base pointer. 147 // 148 // In a dynamically linked binary, r3 contains argc, r4 149 // contains argv, r5 contains envp, r6 contains auxv, and r13 150 // contains the TLS pointer. 151 // 152 // Figure out which case this is by looking at r4: if it's 0, 153 // we're statically linked; otherwise we're dynamically 154 // linked. 155 CMP R0, R4 156 BNE dlink 157 158 // Statically linked 159 MOVD 0(R1), R3 // argc 160 ADD $8, R1, R4 // argv 161 MOVD $runtimem0+m_tls(SB), R13 // TLS 162 ADD $0x7000, R13 163 164 dlink: 165 BR main(SB) 166 167 TEXT main(SB),NOSPLIT,$-8 168 MOVD $runtimert0_go(SB), R12 169 MOVD R12, CTR 170 BR (CTR) 171
