I have a code fragment from a dump which I want to understand. What bothers me most, are the (seemingly) recursive calls like
bd604: e8 fc ff ff ff call bd605 + 0xb5
What do they do? I don't use recursion in the original function.
Thanks@schnaader
it seems as if the calls make cld and jump to EAX
EDIT: full dmp of my function
00bd550 : SendData(): bd550: 55 push %ebp
bd551: 57 push %edi
bd552: 56 push %esi
bd553: 53 push %ebx
bd554: 83 ec 20 sub $0x20,%esp
bd557: 8b 35 74 a2 06 00 mov 0x6a274,%esi
bd55d: 8b 1d ac a2 06 00 mov 0x6a2ac,%ebx
bd563: dd 44 24 40 fldl 0x40(%esp,1)
bd567: 66 c7 44 24 0e 00 00 movw $0x0,0xe(%esp,1)
bd56e: 83 eb 18 sub $0x18,%ebx
bd571: 85 f6 test %esi,%esi
bd573: dd 5c 24 18 fstpl 0x18(%esp,1)
bd577: dd 44 24 48 fldl 0x48(%esp,1)
bd57b: dd 5c 24 10 fstpl 0x10(%esp,1)
bd57f: 0f 85 b2 00 00 00 jne bd637
bd585: 8b 7c 24 38 mov 0x38(%esp,1),%edi
bd589: 89 dd mov %ebx,%ebp
bd58b: c1 fd 02 sar $0x2,%ebp
bd58e: 85 ff test %edi,%edi
bd590: 0f 8e 99 00 00 00 jle bd62f
bd596: 8d 76 00 lea 0x0(%esi),%esi
bd599: 8d bc 27 00 00 00 00 lea 0x0(%edi,1),%edi
bd5a0: 0f b7 74 24 0e movzwl 0xe(%esp,1),%esi
bd5a5: 39 ef cmp %ebp,%edi
bd5a7: 89 e8 mov %ebp,%eax
bd5a9: 0f 4e c7 cmovle %edi,%eax
bd5ac: dd 44 24 18 fldl 0x18(%esp,1)
bd5b0: 89 c5 mov %eax,%ebp
bd5b2: 8d 1c ad 00 00 00 00 lea 0x0(,%ebp,4),%ebx
bd5b9: 29 ef sub %ebp,%edi
bd5bb: 01 c6 add %eax,%esi
bd5bd: a1 a8 a2 06 00 mov 0x6a2a8,%eax
bd5c2: 8d 56 ff lea 0xffffffff(%esi),%edx
bd5c5: dd 58 08 fstpl 0x8(%eax)
bd5c8: 66 89 50 06 mov %dx,0x6(%eax)
bd5cc: 0f b7 54 24 0e movzwl 0xe(%esp,1),%edx
bd5d1: 66 89 50 04 mov %dx,0x4(%eax)
bd5d5: 8b 54 24 3c mov 0x3c(%esp,1),%edx
bd5d9: 89 10 mov %edx,(%eax)
bd5db: dd 44 24 10 fldl 0x10(%esp,1)
bd5df: dd 58 10 fstpl 0x10(%eax)
bd5e2: 8b 54 24 34 mov 0x34(%esp,1),%edx
bd5e6: 0f bf 44 24 0e movswl 0xe(%esp,1),%eax
bd5eb: 89 5c 24 08 mov %ebx,0x8(%esp,1)
bd5ef: 83 c3 18 add $0x18,%ebx
bd5f2: 8d 04 82 lea (%edx,%eax,4),%eax
bd5f5: 89 44 24 04 mov %eax,0x4(%esp,1)
bd5f9: a1 a8 a2 06 00 mov 0x6a2a8,%eax
bd5fe: 83 c0 18 add $0x18,%eax
bd601: 89 04 24 mov %eax,(%esp,1)
bd604: e8 fc ff ff ff call bd605
bd609: a1 a8 a2 06 00 mov 0x6a2a8,%eax
bd60e: c7 44 24 08 00 00 00 movl $0x0,0x8(%esp,1)
bd615: 00
bd616: 89 5c 24 04 mov %ebx,0x4(%esp,1)
bd61a: 89 04 24 mov %eax,(%esp,1)
bd61d: e8 fc ff ff ff call bd61e
bd622: 85 ff test %edi,%edi
bd624: 66 89 74 24 0e mov %si,0xe(%esp,1)
bd629: 0f 8f 71 ff ff ff jg bd5a0
bd62f: 83 c4 20 add $0x20,%esp
bd632: 5b pop %ebx
bd633: 5e pop %esi
bd634: 5f pop %edi
bd635: 5d pop %ebp
bd636: c3 ret
bd637: dd 44 24 18 fldl 0x18(%esp,1)
bd63b: dd 1c 24 fstpl (%esp,1)
bd63e: e8 fc ff ff ff call bd63f
bd643: 85 c0 test %eax,%eax
bd645: 74 e8 je bd62f
bd647: e9 39 ff ff ff jmp bd585
bd64c: 8d 74 26 00 lea 0x0(%esi,1),%esi