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| author | chenguoqi <chenguoqi@loongson.cn> | 2023-06-08 14:04:26 +0800 |
|---|---|---|
| committer | Gopher Robot <gobot@golang.org> | 2023-06-10 16:02:54 +0000 |
| commit | fafa4091abb4ed6de6ff4daef67ef1cf9db40923 (patch) | |
| tree | fc6ee31ac5f8fc6830c36356d5784dce3a4dd0f8 | |
| parent | 82dc37c0d05c33c00b585664cba1c647bf8ac99e (diff) | |
| download | go-fafa4091abb4ed6de6ff4daef67ef1cf9db40923.tar.gz go-fafa4091abb4ed6de6ff4daef67ef1cf9db40923.zip | |
syscall: implement Ptrace{Set,Get}Regs using PTRACE_{GET,SET}REGSET on all linux platforms
In the ptrace system call, most of the newer architectures (e.g. arm64,riscv64,loong64)
do not provide support for the command PTRACE_{GET, SET}REGS.
The Linux kernel 2.6.33-rc7[1] introduces support for the command PTRACE_{GET,SET}REGSET,
which exports different types of register sets depending on the NT_* types, completely
overriding the functionality provided by PTRACE_{GET,SET}REGS.
[1] https://lore.kernel.org/all/20100211195614.886724710@sbs-t61.sc.intel.com/
Fixes #60679.
Change-Id: I8c2671d64a7ecd654834740f4f1e1e50c00edcae
Reviewed-on: https://go-review.googlesource.com/c/go/+/501756
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
| -rw-r--r-- | src/syscall/syscall_linux.go | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/src/syscall/syscall_linux.go b/src/syscall/syscall_linux.go index 618b2e6d42..a2768e1845 100644 --- a/src/syscall/syscall_linux.go +++ b/src/syscall/syscall_linux.go @@ -936,12 +936,22 @@ func PtracePokeData(pid int, addr uintptr, data []byte) (count int, err error) { return ptracePoke(PTRACE_POKEDATA, PTRACE_PEEKDATA, pid, addr, data) } +const ( + _NT_PRSTATUS = 1 +) + func PtraceGetRegs(pid int, regsout *PtraceRegs) (err error) { - return ptracePtr(PTRACE_GETREGS, pid, 0, unsafe.Pointer(regsout)) + var iov Iovec + iov.Base = (*byte)(unsafe.Pointer(regsout)) + iov.SetLen(int(unsafe.Sizeof(*regsout))) + return ptracePtr(PTRACE_GETREGSET, pid, uintptr(_NT_PRSTATUS), unsafe.Pointer(&iov)) } func PtraceSetRegs(pid int, regs *PtraceRegs) (err error) { - return ptracePtr(PTRACE_SETREGS, pid, 0, unsafe.Pointer(regs)) + var iov Iovec + iov.Base = (*byte)(unsafe.Pointer(regs)) + iov.SetLen(int(unsafe.Sizeof(*regs))) + return ptracePtr(PTRACE_SETREGSET, pid, uintptr(_NT_PRSTATUS), unsafe.Pointer(&iov)) } func PtraceSetOptions(pid int, options int) (err error) { |