Hi, Some "naive" questions about u-boot for MPC85xx, the definition of some macro in ppc_asm.tmpl. Can anyone there explain them to me please?
1) In GET_GOT(x) what does " lwz r0,0b-1b(r14) ;" do? what does "0b-1b" stands for, or the meaning of the syntax? why move the content of the memory pointing by LR?
#define GET_GOT \
bl 1f ; \ .text 2 ; \0: .long .LCTOC1-1f ; \ .text ; \ 1: mflr r14 ; \ lwz r0,0b-1b(r14) ; \ add r14,r0,r14 ;
2) In START_GOT, any special meaning for the value 32768?
.LCTOC1=.+32768
3) Syntax for GOT_ENTRY(NAME) and GOT(NAME), like . - .LCTOC1 (line 57) and .text 2 (line 50) could not find then in the GNU douments (ld, as, gcc, glibc etc).
Thanks for the help!!