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| author | Shenghou Ma <minux.ma@gmail.com> | 2013-03-23 03:21:30 +0800 |
|---|---|---|
| committer | Shenghou Ma <minux.ma@gmail.com> | 2013-03-23 03:21:30 +0800 |
| commit | 092b7cfb08f6bc843050c71f1aae9ffbf4b512a5 (patch) | |
| tree | 803370f4e13e1488ca270deb4bbc620da6c1a6fc /src/pkg/runtime/cgo | |
| parent | 81d26e3817524c98e24c5a2a01bc87fbceb9c61b (diff) | |
| download | go-092b7cfb08f6bc843050c71f1aae9ffbf4b512a5.tar.xz | |
runtime/cgo, go/build: re-enable cgo for FreeBSD/ARM.
R=dave, rsc
CC=golang-dev
https://golang.org/cl/7970043
Diffstat (limited to 'src/pkg/runtime/cgo')
| -rw-r--r-- | src/pkg/runtime/cgo/gcc_freebsd_arm.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/src/pkg/runtime/cgo/gcc_freebsd_arm.c b/src/pkg/runtime/cgo/gcc_freebsd_arm.c index 3bcb0b2701..73c990c28f 100644 --- a/src/pkg/runtime/cgo/gcc_freebsd_arm.c +++ b/src/pkg/runtime/cgo/gcc_freebsd_arm.c @@ -2,6 +2,8 @@ // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. +#include <sys/types.h> +#include <machine/sysarch.h> #include <pthread.h> #include <string.h> #include "libcgo.h" @@ -22,10 +24,20 @@ void x_cgo_load_gm(void) __attribute__((naked)); void __aeabi_read_tp(void) { - // read @ 0xffff1000 __asm__ __volatile__ ( +#ifdef ARM_TP_ADDRESS + // ARM_TP_ADDRESS is (ARM_VECTORS_HIGH + 0x1000) or 0xffff1000 + // GCC inline asm doesn't provide a way to provide a constant + // to "ldr r0, =??" pseudo instruction, so we hardcode the value + // and check it with cpp. +#if ARM_TP_ADDRESS != 0xffff1000 +#error Wrong ARM_TP_ADDRESS! +#endif "ldr r0, =0xffff1000\n\t" "ldr r0, [r0]\n\t" +#else + "mrc p15, 0, r0, c13, c0, 3\n\t" +#endif "mov pc, lr\n\t" ); } |