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runtime: use uintXX instead of *byte for si_addr on Darwin

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Currently, Darwin's siginfo type uses *byte for the si_addr
field. This results in unwanted write barriers in set_sigaddr. It's
also pointless since it never points to anything real and the get/set
methods return/take uintXX and cast it from/to the pointer.

All other arches use a uint type for this field. Change Darwin to
match. This simplifies the get/set methods and eliminates the unwanted
write barriers.

Change-Id: Ifdb5646d35e1f2f6808b87a3d59745ec9718add1
Reviewed-on: https://go-review.googlesource.com/8086
Reviewed-by: Austin Clements <austin@google.com>
This commit is contained in:
Austin Clements 2015-03-26 12:14:26 -04:00
parent 9b0ea6aa27
commit ec2c7e6659
6 changed files with 9 additions and 9 deletions
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2
src/runtime/defs_darwin_386.go
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@ -174,7 +174,7 @@ type siginfo struct {
si_pid int32
si_uid uint32
si_status int32
si_addr *byte
si_addr uint32
si_value [4]byte
si_band int32
__pad [7]uint32

2
src/runtime/defs_darwin_amd64.go
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@ -175,7 +175,7 @@ type siginfo struct {
si_pid int32
si_uid uint32
si_status int32
si_addr *byte
si_addr uint64
si_value [8]byte
si_band int64
__pad [7]uint64

2
src/runtime/defs_darwin_arm.go
View File

@ -176,7 +176,7 @@ type siginfo struct {
si_pid int32
si_uid uint32
si_status int32
si_addr *byte
si_addr uint32
si_value [4]byte
si_band int32
__pad [7]uint32

4
src/runtime/signal_darwin_386.go
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@ -26,9 +26,9 @@ func (c *sigctxt) cs() uint32 { return c.regs().cs }
func (c *sigctxt) fs() uint32 { return c.regs().fs }
func (c *sigctxt) gs() uint32 { return c.regs().gs }
func (c *sigctxt) sigcode() uint32 { return uint32(c.info.si_code) }
func (c *sigctxt) sigaddr() uint32 { return uint32(uintptr(unsafe.Pointer(c.info.si_addr))) }
func (c *sigctxt) sigaddr() uint32 { return c.info.si_addr }
func (c *sigctxt) set_eip(x uint32) { c.regs().eip = x }
func (c *sigctxt) set_esp(x uint32) { c.regs().esp = x }
func (c *sigctxt) set_sigcode(x uint32) { c.info.si_code = int32(x) }
func (c *sigctxt) set_sigaddr(x uint32) { c.info.si_addr = (*byte)(unsafe.Pointer(uintptr(x))) }
func (c *sigctxt) set_sigaddr(x uint32) { c.info.si_addr = x }

4
src/runtime/signal_darwin_amd64.go
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@ -34,9 +34,9 @@ func (c *sigctxt) cs() uint64 { return c.regs().cs }
func (c *sigctxt) fs() uint64 { return c.regs().fs }
func (c *sigctxt) gs() uint64 { return c.regs().gs }
func (c *sigctxt) sigcode() uint64 { return uint64(c.info.si_code) }
func (c *sigctxt) sigaddr() uint64 { return uint64(uintptr(unsafe.Pointer(c.info.si_addr))) }
func (c *sigctxt) sigaddr() uint64 { return c.info.si_addr }
func (c *sigctxt) set_rip(x uint64) { c.regs().rip = x }
func (c *sigctxt) set_rsp(x uint64) { c.regs().rsp = x }
func (c *sigctxt) set_sigcode(x uint64) { c.info.si_code = int32(x) }
func (c *sigctxt) set_sigaddr(x uint64) { c.info.si_addr = (*byte)(unsafe.Pointer(uintptr(x))) }
func (c *sigctxt) set_sigaddr(x uint64) { c.info.si_addr = x }

4
src/runtime/signal_darwin_arm.go
View File

@ -29,7 +29,7 @@ func (c *sigctxt) sp() uint32 { return c.regs().sp }
func (c *sigctxt) lr() uint32 { return c.regs().lr }
func (c *sigctxt) pc() uint32 { return c.regs().pc }
func (c *sigctxt) cpsr() uint32 { return c.regs().cpsr }
func (c *sigctxt) fault() uint32 { return uint32(uintptr(unsafe.Pointer(c.info.si_addr))) }
func (c *sigctxt) fault() uint32 { return c.info.si_addr }
func (c *sigctxt) sigcode() uint32 { return uint32(c.info.si_code) }
func (c *sigctxt) trap() uint32 { return 0 }
func (c *sigctxt) error() uint32 { return 0 }
@ -41,4 +41,4 @@ func (c *sigctxt) set_lr(x uint32) { c.regs().lr = x }
func (c *sigctxt) set_r10(x uint32) { c.regs().r[10] = x }
func (c *sigctxt) set_sigcode(x uint32) { c.info.si_code = int32(x) }
func (c *sigctxt) set_sigaddr(x uint32) { c.info.si_addr = (*byte)(unsafe.Pointer(uintptr(x))) }
func (c *sigctxt) set_sigaddr(x uint32) { c.info.si_addr = x }