Commit-ID: f19a25c872b20ae4357f72687cf3e7b0da220ee2 Gitweb: http://git.kernel.org/tip/f19a25c872b20ae4357f72687cf3e7b0da220ee2 Author: Brian Gerst <brgerst@xxxxxxxxx> AuthorDate: Mon, 25 Jan 2010 10:47:33 -0500 Committer: H. Peter Anvin <hpa@xxxxxxxxx> CommitDate: Tue, 26 Jan 2010 23:38:14 -0800 x86-64: Use normal ptregs stub for execve Execve historically passed regs by value, so it had a seperate stub. This is no longer true, so change it to use a normal PTREGSCALL stub. Signed-off-by: Brian Gerst <brgerst@xxxxxxxxx> LKML-Reference: <1264434453-2204-1-git-send-email-brgerst@xxxxxxxxx> Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxx> --- arch/x86/kernel/entry_64.S | 17 +---------------- 1 files changed, 1 insertions(+), 16 deletions(-) diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S index 0697ff1..0c31502 100644 --- a/arch/x86/kernel/entry_64.S +++ b/arch/x86/kernel/entry_64.S @@ -696,6 +696,7 @@ END(\label) PTREGSCALL stub_clone, sys_clone, %r8 PTREGSCALL stub_fork, sys_fork, %rdi PTREGSCALL stub_vfork, sys_vfork, %rdi + PTREGSCALL stub_execve, sys_execve, %rcx PTREGSCALL stub_sigaltstack, sys_sigaltstack, %rdx PTREGSCALL stub_iopl, sys_iopl, %rsi @@ -712,22 +713,6 @@ ENTRY(ptregscall_common) CFI_ENDPROC END(ptregscall_common) -ENTRY(stub_execve) - CFI_STARTPROC - popq %r11 - CFI_ADJUST_CFA_OFFSET -8 - CFI_REGISTER rip, r11 - SAVE_REST - FIXUP_TOP_OF_STACK %r11 - movq %rsp, %rcx - call sys_execve - RESTORE_TOP_OF_STACK %r11 - movq %rax,RAX(%rsp) - RESTORE_REST - jmp int_ret_from_sys_call - CFI_ENDPROC -END(stub_execve) - /* * sigreturn is special because it needs to restore all registers on return. * This cannot be done with SYSRET, so use the IRET return path instead. -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
|