Hello, Thank you in advance for your help. This is my first time using the mailing list. Please notify me if this is not the proper place for these types of questions. I am working with gcc and the ?finstrument-functions option. I have been trying to instrument both kerbose ftp and putty sfpt. I have noticed an unusual event. It seems that gcc is instrumenting the function entry and exit twice. Has anyone experienced this? Any ideas on what might be causing this? Here is the results of objdump on main.o after a compile with ?finstrument-functions. Notice that a call to ?__cyg_profile_func_enter+0xfffffffffffffffc? happens twice in the code. 0000000000000000 <makeargv>: 0: 55 push %rbp 1: bf 00 00 00 00 mov $0x0,%edi 2: R_X86_64_32 makeargv 6: bd 00 00 00 00 mov $0x0,%ebp 7: R_X86_64_32 margv b: 53 push %rbx c: 48 83 ec 08 sub $0x8,%rsp 10: 48 8b 74 24 18 mov 0x18(%rsp),%rsi 15: e8 00 00 00 00 callq 1a <makeargv+0x1a> 16: R_X86_64_PC32 __cyg_profile_func_enter+0xfffffffffffffffc 1a: c7 05 00 00 00 00 00 movl $0x0,0(%rip) # 24 <makeargv+0x24> 21: 00 00 00 1c: R_X86_64_PC32 margc+0xfffffffffffffff8 24: 48 c7 05 00 00 00 00 movq $0x0,0(%rip) # 2f <makeargv+0x2f> 2b: 00 00 00 00 27: R_X86_64_PC32 stringbase+0xfffffffffffffff8 2b: R_X86_64_32S line 2f: 48 c7 05 00 00 00 00 movq $0x0,0(%rip) # 3a <makeargv+0x3a> 36: 00 00 00 00 32: R_X86_64_PC32 argbase+0xfffffffffffffff8 36: R_X86_64_32S argbuf 3a: c7 05 00 00 00 00 00 movl $0x0,0(%rip) # 44 <makeargv+0x44> 41: 00 00 00 3c: R_X86_64_PC32 slrflag+0xfffffffffffffff8 44: 48 8b 74 24 18 mov 0x18(%rsp),%rsi 49: bf 00 00 00 00 mov $0x0,%edi 4a: R_X86_64_32 makeargv 4e: e8 00 00 00 00 callq 53 <makeargv+0x53> 4f: R_X86_64_PC32 __cyg_profile_func_enter+0xfffffffffffffffc 53: 48 8b 0d 00 00 00 00 mov 0(%rip),%rcx # 5a <makeargv+0x5a> 56: R_X86_64_PC32 stringbase+0xfffffffffffffffc 5a: 48 8b 1d 00 00 00 00 mov 0(%rip),%rbx # 61 <makeargv+0x61> 5d: R_X86_64_PC32 argbase+0xfffffffffffffffc 61: 0f b6 11 movzbl (%rcx),%edx 64: 80 fa 21 cmp $0x21,%dl 67: 74 49 je b2 <makeargv+0xb2> 69: 80 fa 24 cmp $0x24,%dl 6c: 74 44 je b2 <makeargv+0xb2> Dale Reese Computer Measurnment Laboratory
