From 851c5adf05dd07a9a3a4d2d52ce910fd8ddcdfa7 Mon Sep 17 00:00:00 2001 From: Clement Date: Fri, 25 Jan 2019 10:49:45 -0600 Subject: [PATCH 21/37] runtime/cgo: add port for aix/ppc64 and big-endian ppc64 --- src/runtime/cgo/asm_ppc64x.s | 13 +- src/runtime/cgo/gcc_aix_ppc64.S | 133 ++++++++++++++++++ src/runtime/cgo/gcc_context.c | 2 +- src/runtime/cgo/gcc_fatalf.c | 2 +- src/runtime/cgo/gcc_libinit.c | 2 +- .../cgo/{gcc_ppc64x.S => gcc_linux_ppc64x.S} | 1 + .../cgo/{gcc_linux_ppc64x.c => gcc_ppc64x.c} | 0 src/runtime/cgo/gcc_setenv.c | 2 +- src/runtime/cgo/setenv.go | 2 +- 9 files changed, 148 insertions(+), 9 deletions(-) create mode 100644 src/runtime/cgo/gcc_aix_ppc64.S rename src/runtime/cgo/{gcc_ppc64x.S => gcc_linux_ppc64x.S} (99%) rename src/runtime/cgo/{gcc_linux_ppc64x.c => gcc_ppc64x.c} (100%) diff --git a/src/runtime/cgo/asm_ppc64x.s b/src/runtime/cgo/asm_ppc64x.s index 1cf27ddc96..3876f9389c 100644 --- a/src/runtime/cgo/asm_ppc64x.s +++ b/src/runtime/cgo/asm_ppc64x.s @@ -11,8 +11,6 @@ // func crosscall2(fn func(a unsafe.Pointer, n int32, ctxt uintptr), a unsafe.Pointer, n int32, ctxt uintptr) // Saves C callee-saved registers and calls fn with three arguments. TEXT crosscall2(SB),NOSPLIT|NOFRAME,$0 - // TODO(austin): ABI v1 (fn is probably a function descriptor) - // Start with standard C stack frame layout and linkage MOVD LR, R0 MOVD R0, 16(R1) // Save LR in caller's frame @@ -29,9 +27,16 @@ TEXT crosscall2(SB),NOSPLIT|NOFRAME,$0 BL runtime·load_g(SB) MOVD R3, R12 - MOVD R3, CTR +#ifdef GOARCH_ppc64 + // ppc64 use elf ABI v1. we must get the real entry address from + // first slot of the function descriptor before call. + // Same for AIX. + MOVD 8(R12), R2 + MOVD (R12), R12 +#endif + MOVD R12, CTR MOVD R4, FIXED_FRAME+0(R1) - MOVD R5, FIXED_FRAME+8(R1) + MOVW R5, FIXED_FRAME+8(R1) MOVD R6, FIXED_FRAME+16(R1) BL (CTR) diff --git a/src/runtime/cgo/gcc_aix_ppc64.S b/src/runtime/cgo/gcc_aix_ppc64.S new file mode 100644 index 0000000000..ea1e4ceaaa --- /dev/null +++ b/src/runtime/cgo/gcc_aix_ppc64.S @@ -0,0 +1,133 @@ +// Copyright 2014 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build ppc64 +// +build aix + +/* + * void crosscall_ppc64(void (*fn)(void), void *g) + * + * Calling into the gc tool chain, where all registers are caller save. + * Called from standard ppc64 C ABI, where r2, r14-r31, f14-f31 are + * callee-save, so they must be saved explicitly. + * AIX has a special assembly syntax and keywords that can be mixed with + * Linux assembly. + */ + .toc + .csect .text[PR] + .globl crosscall_ppc64 + .globl .crosscall_ppc64 + .csect crosscall_ppc64[DS] +crosscall_ppc64: + .llong .crosscall_ppc64, TOC[tc0], 0 + .csect .text[PR] +.crosscall_ppc64: + // Start with standard C stack frame layout and linkage + mflr 0 + std 0, 16(1) // Save LR in caller's frame + std 2, 40(1) // Save TOC in caller's frame + bl saveregs + stdu 1, -296(1) + + // Set up Go ABI constant registers + bl ._cgo_reginit + nop + + // Restore g pointer (r30 in Go ABI, which may have been clobbered by C) + mr 30, 4 + + // Call fn + mr 12, 3 + mtctr 12 + bctrl + + addi 1, 1, 296 + bl restoreregs + ld 2, 40(1) + ld 0, 16(1) + mtlr 0 + blr + +saveregs: + // Save callee-save registers + // O=-288; for R in {14..31}; do echo "\tstd\t$R, $O(1)"; ((O+=8)); done; for F in f{14..31}; do echo "\tstfd\t$F, $O(1)"; ((O+=8)); done + std 14, -288(1) + std 15, -280(1) + std 16, -272(1) + std 17, -264(1) + std 18, -256(1) + std 19, -248(1) + std 20, -240(1) + std 21, -232(1) + std 22, -224(1) + std 23, -216(1) + std 24, -208(1) + std 25, -200(1) + std 26, -192(1) + std 27, -184(1) + std 28, -176(1) + std 29, -168(1) + std 30, -160(1) + std 31, -152(1) + stfd 14, -144(1) + stfd 15, -136(1) + stfd 16, -128(1) + stfd 17, -120(1) + stfd 18, -112(1) + stfd 19, -104(1) + stfd 20, -96(1) + stfd 21, -88(1) + stfd 22, -80(1) + stfd 23, -72(1) + stfd 24, -64(1) + stfd 25, -56(1) + stfd 26, -48(1) + stfd 27, -40(1) + stfd 28, -32(1) + stfd 29, -24(1) + stfd 30, -16(1) + stfd 31, -8(1) + + blr + +restoreregs: + // O=-288; for R in {14..31}; do echo "\tld\t$R, $O(1)"; ((O+=8)); done; for F in {14..31}; do echo "\tlfd\t$F, $O(1)"; ((O+=8)); done + ld 14, -288(1) + ld 15, -280(1) + ld 16, -272(1) + ld 17, -264(1) + ld 18, -256(1) + ld 19, -248(1) + ld 20, -240(1) + ld 21, -232(1) + ld 22, -224(1) + ld 23, -216(1) + ld 24, -208(1) + ld 25, -200(1) + ld 26, -192(1) + ld 27, -184(1) + ld 28, -176(1) + ld 29, -168(1) + ld 30, -160(1) + ld 31, -152(1) + lfd 14, -144(1) + lfd 15, -136(1) + lfd 16, -128(1) + lfd 17, -120(1) + lfd 18, -112(1) + lfd 19, -104(1) + lfd 20, -96(1) + lfd 21, -88(1) + lfd 22, -80(1) + lfd 23, -72(1) + lfd 24, -64(1) + lfd 25, -56(1) + lfd 26, -48(1) + lfd 27, -40(1) + lfd 28, -32(1) + lfd 29, -24(1) + lfd 30, -16(1) + lfd 31, -8(1) + + blr diff --git a/src/runtime/cgo/gcc_context.c b/src/runtime/cgo/gcc_context.c index b46b6040d2..5fc0abb8bc 100644 --- a/src/runtime/cgo/gcc_context.c +++ b/src/runtime/cgo/gcc_context.c @@ -3,7 +3,7 @@ // license that can be found in the LICENSE file. // +build cgo -// +build darwin dragonfly freebsd linux netbsd openbsd solaris windows +// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris windows #include "libcgo.h" diff --git a/src/runtime/cgo/gcc_fatalf.c b/src/runtime/cgo/gcc_fatalf.c index fdcf6f5e52..597e750f12 100644 --- a/src/runtime/cgo/gcc_fatalf.c +++ b/src/runtime/cgo/gcc_fatalf.c @@ -2,7 +2,7 @@ // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. -// +build !android,linux freebsd +// +build aix !android,linux freebsd #include #include diff --git a/src/runtime/cgo/gcc_libinit.c b/src/runtime/cgo/gcc_libinit.c index 3dafd10b7b..d35726d953 100644 --- a/src/runtime/cgo/gcc_libinit.c +++ b/src/runtime/cgo/gcc_libinit.c @@ -3,7 +3,7 @@ // license that can be found in the LICENSE file. // +build cgo -// +build darwin dragonfly freebsd linux netbsd openbsd solaris +// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris #include #include diff --git a/src/runtime/cgo/gcc_ppc64x.S b/src/runtime/cgo/gcc_linux_ppc64x.S similarity index 99% rename from src/runtime/cgo/gcc_ppc64x.S rename to src/runtime/cgo/gcc_linux_ppc64x.S index 5f37a8bfc1..595eb38460 100644 --- a/src/runtime/cgo/gcc_ppc64x.S +++ b/src/runtime/cgo/gcc_linux_ppc64x.S @@ -3,6 +3,7 @@ // license that can be found in the LICENSE file. // +build ppc64 ppc64le +// +build linux /* * Apple still insists on underscore prefixes for C function names. diff --git a/src/runtime/cgo/gcc_linux_ppc64x.c b/src/runtime/cgo/gcc_ppc64x.c similarity index 100% rename from src/runtime/cgo/gcc_linux_ppc64x.c rename to src/runtime/cgo/gcc_ppc64x.c diff --git a/src/runtime/cgo/gcc_setenv.c b/src/runtime/cgo/gcc_setenv.c index ed5d203fb0..88e92bfd8a 100644 --- a/src/runtime/cgo/gcc_setenv.c +++ b/src/runtime/cgo/gcc_setenv.c @@ -3,7 +3,7 @@ // license that can be found in the LICENSE file. // +build cgo -// +build darwin dragonfly freebsd linux netbsd openbsd solaris +// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris #include "libcgo.h" diff --git a/src/runtime/cgo/setenv.go b/src/runtime/cgo/setenv.go index fab43399e2..6495fcb5f8 100644 --- a/src/runtime/cgo/setenv.go +++ b/src/runtime/cgo/setenv.go @@ -2,7 +2,7 @@ // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. -// +build darwin dragonfly freebsd linux netbsd openbsd solaris +// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris package cgo -- 2.21.0