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asan_ppc64le.s
// Copyright 2022 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. //go:build asan #include "go_asm.h" #include "textflag.h" #define RARG0 R3 #define RARG1 R4 #define RARG2 R5 #define RARG3 R6 #define FARG R12 // Called from instrumented code. // func runtime·doasanread(addr unsafe.Pointer, sz, sp, pc uintptr) TEXT runtime·doasanread(SB),NOSPLIT|NOFRAME,$0-32 MOVD addr+0(FP), RARG0 MOVD sz+8(FP), RARG1 MOVD sp+16(FP), RARG2 MOVD pc+24(FP), RARG3 // void __asan_read_go(void *addr, uintptr_t sz, void *sp, void *pc); MOVD $__asan_read_go(SB), FARG BR asancall<>(SB) // func runtime·doasanwrite(addr unsafe.Pointer, sz, sp, pc uintptr) TEXT runtime·doasanwrite(SB),NOSPLIT|NOFRAME,$0-32 MOVD addr+0(FP), RARG0 MOVD sz+8(FP), RARG1 MOVD sp+16(FP), RARG2 MOVD pc+24(FP), RARG3 // void __asan_write_go(void *addr, uintptr_t sz, void *sp, void *pc); MOVD $__asan_write_go(SB), FARG BR asancall<>(SB) // func runtime·asanunpoison(addr unsafe.Pointer, sz uintptr) TEXT runtime·asanunpoison(SB),NOSPLIT|NOFRAME,$0-16 MOVD addr+0(FP), RARG0 MOVD sz+8(FP), RARG1 // void __asan_unpoison_go(void *addr, uintptr_t sz); MOVD $__asan_unpoison_go(SB), FARG BR asancall<>(SB) // func runtime·asanpoison(addr unsafe.Pointer, sz uintptr) TEXT runtime·asanpoison(SB),NOSPLIT|NOFRAME,$0-16 MOVD addr+0(FP), RARG0 MOVD sz+8(FP), RARG1 // void __asan_poison_go(void *addr, uintptr_t sz); MOVD $__asan_poison_go(SB), FARG BR asancall<>(SB) // func runtime·asanregisterglobals(addr unsafe.Pointer, n uintptr) TEXT runtime·asanregisterglobals(SB),NOSPLIT|NOFRAME,$0-16 MOVD addr+0(FP), RARG0 MOVD n+8(FP), RARG1 // void __asan_register_globals_go(void *addr, uintptr_t n); MOVD $__asan_register_globals_go(SB), FARG BR asancall<>(SB) // Switches SP to g0 stack and calls (FARG). Arguments already set. TEXT asancall<>(SB), NOSPLIT, $0-0 // LR saved in generated prologue // Get info from the current goroutine MOVD runtime·tls_g(SB), R10 // g offset in TLS MOVD 0(R10), g MOVD g_m(g), R7 // m for g MOVD R1, R16 // callee-saved, preserved across C call MOVD m_g0(R7), R10 // g0 for m CMP R10, g // same g0? BEQ call // already on g0 MOVD (g_sched+gobuf_sp)(R10), R1 // switch R1 call: // prepare frame for C ABI SUB $32, R1 // create frame for callee saving LR, CR, R2 etc. RLDCR $0, R1, $~15, R1 // align SP to 16 bytes MOVD FARG, CTR // address of function to be called MOVD R0, 0(R1) // clear back chain pointer BL (CTR) MOVD $0, R0 // C code can clobber R0 set it back to 0 MOVD R16, R1 // restore R1; MOVD runtime·tls_g(SB), R10 // find correct g MOVD 0(R10), g RET // tls_g, g value for each thread in TLS GLOBL runtime·tls_g+0(SB), TLSBSS+DUPOK, $8
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