From ec215346b92fdaef5d8042b5545e16beb7ccc7d1 Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Tue, 1 Mar 2016 16:58:07 -0800 Subject: Call x86-64 __mcount_internal/__sigjmp_save directly Since __mcount_internal and __sigjmp_save are internal to x86-64 libc.so: 3532: 0000000000104530 289 FUNC LOCAL DEFAULT 13 __mcount_internal 3391: 0000000000034170 38 FUNC LOCAL DEFAULT 13 __sigjmp_save they can be called directly without PLT. * sysdeps/x86_64/_mcount.S (C_LABEL(_mcount)): Call __mcount_internal directly. (C_LABEL(__fentry__)): Likewise. * sysdeps/x86_64/setjmp.S __sigsetjmp): Call __sigjmp_save directly. --- sysdeps/x86_64/_mcount.S | 8 -------- 1 file changed, 8 deletions(-) (limited to 'sysdeps/x86_64/_mcount.S') diff --git a/sysdeps/x86_64/_mcount.S b/sysdeps/x86_64/_mcount.S index 5d7edd2a29..ba13643464 100644 --- a/sysdeps/x86_64/_mcount.S +++ b/sysdeps/x86_64/_mcount.S @@ -43,11 +43,7 @@ C_LABEL(_mcount) movq 56(%rsp),%rsi /* Get frompc via the frame pointer. */ movq 8(%rbp),%rdi -#ifdef PIC - call C_SYMBOL_NAME(__mcount_internal)@PLT -#else call C_SYMBOL_NAME(__mcount_internal) -#endif /* Pop the saved registers. Please note that `mcount' has no return value. */ movq 48(%rsp),%r9 @@ -84,11 +80,7 @@ C_LABEL(__fentry__) movq 64(%rsp),%rsi /* caller is the return address above it */ movq 72(%rsp),%rdi -#ifdef PIC - call C_SYMBOL_NAME(__mcount_internal)@PLT -#else call C_SYMBOL_NAME(__mcount_internal) -#endif /* Pop the saved registers. Please note that `__fentry__' has no return value. */ movq 48(%rsp),%r9 -- cgit 1.4.1