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all: replace _extern_* workaround with //go:extern pragma

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This commit is contained in:
Ayke van Laethem
2018-09-21 14:28:47 +02:00
parent 2ca2220e44
commit 3c22f5731c
3 changed files with 69 additions and 18 deletions
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src/runtime/gc.go
+4 -4
View File
@@ -6,10 +6,10 @@ import (
"unsafe"
)
var (
_extern__heap_start unsafe.Pointer // defined by the linker
heapptr = uintptr(unsafe.Pointer(&_extern__heap_start))
)
//go:extern _heap_start
var heapStart unsafe.Pointer
var heapptr = uintptr(unsafe.Pointer(&heapStart))
func alloc(size uintptr) unsafe.Pointer {
// TODO: this can be optimized by not casting between pointers and ints so
src/runtime/runtime_avr.go
+7 -6
View File
@@ -29,15 +29,16 @@ const (
WDT_PERIOD_2S
)
var (
_extern__sbss unsafe.Pointer // defined by the linker
_extern__ebss unsafe.Pointer // defined by the linker
)
//go:extern _sbss
var _sbss unsafe.Pointer
//go:extern _ebss
var _ebss unsafe.Pointer
func preinit() {
// Initialize .bss: zero-initialized global variables.
ptr := uintptr(unsafe.Pointer(&_extern__sbss))
for ptr != uintptr(unsafe.Pointer(&_extern__ebss)) {
ptr := uintptr(unsafe.Pointer(&_sbss))
for ptr != uintptr(unsafe.Pointer(&_ebss)) {
*(*uint8)(unsafe.Pointer(ptr)) = 0
ptr += 1
}