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| author | Ian Lance Taylor <ian@gcc.gnu.org> | 2017-06-21 21:42:41 +0000 |
|---|---|---|
| committer | Ian Lance Taylor <ian@gcc.gnu.org> | 2017-06-21 21:42:41 +0000 |
| commit | 8d4b68a7c4091c99c8d591e93efae5748a7ced13 (patch) | |
| tree | 51c565ff797d0d2f7799adc97742845805f0a8a1 /libgo/go/syscall/syscall_linux_mipsx.go | |
| parent | 4ded86690e9fd3c71e1ff47beea31079ad8a7b4f (diff) | |
| download | gcc-8d4b68a7c4091c99c8d591e93efae5748a7ced13.zip gcc-8d4b68a7c4091c99c8d591e93efae5748a7ced13.tar.gz gcc-8d4b68a7c4091c99c8d591e93efae5748a7ced13.tar.bz2 | |
libgo, syscall: fix ptrace implementation on MIPS
On MIPS, the correct structure for PtraceRegs is 'struct pt_regs' which
is declared in linux/ptrace.h. Previously no PtraceRegs structure was
created on MIPS because 'struct user_regs_struct' doesn't exist there.
Fallback to using pt_regs when the PtraceRegs structure is generated in
mksysinfo.sh, then adjust syscall_linux_mipsx.go to read the program
counter from the correct field.
In addition, implement PtraceGetRegs and PtraceSetRegs on all 3 ABI
variants.
syscall_linux_mips64x.go can now be removed since the ptrace code on
all 3 ABIs is identical.
Reviewed-on: https://go-review.googlesource.com/46150
From-SVN: r249472
Diffstat (limited to 'libgo/go/syscall/syscall_linux_mipsx.go')
| -rw-r--r-- | libgo/go/syscall/syscall_linux_mipsx.go | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/libgo/go/syscall/syscall_linux_mipsx.go b/libgo/go/syscall/syscall_linux_mipsx.go index af319ac..06dd1ea 100644 --- a/libgo/go/syscall/syscall_linux_mipsx.go +++ b/libgo/go/syscall/syscall_linux_mipsx.go @@ -3,10 +3,24 @@ // license that can be found in the LICENSE file. // +build linux -// +build mips mipsle +// +build mips mipsle mips64 mips64le mips64p32 mips64p32le package syscall -func (r *PtraceRegs) PC() uint64 { return uint64(r.Regs[64]) } +import "unsafe" -func (r *PtraceRegs) SetPC(pc uint64) { r.Regs[64] = uint32(pc) } +func (r *PtraceRegs) PC() uint64 { + return r.Cp0_epc +} + +func (r *PtraceRegs) SetPC(pc uint64) { + r.Cp0_epc = pc +} + +func PtraceGetRegs(pid int, regsout *PtraceRegs) (err error) { + return ptrace(PTRACE_GETREGS, pid, 0, uintptr(unsafe.Pointer(regsout))) +} + +func PtraceSetRegs(pid int, regs *PtraceRegs) (err error) { + return ptrace(PTRACE_SETREGS, pid, 0, uintptr(unsafe.Pointer(regs))) +} |