diff options
Diffstat (limited to 'ldso/ldso/cris/resolve.S')
| -rw-r--r-- | ldso/ldso/cris/resolve.S | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/ldso/ldso/cris/resolve.S b/ldso/ldso/cris/resolve.S new file mode 100644 index 000000000..406a3b269 --- /dev/null +++ b/ldso/ldso/cris/resolve.S @@ -0,0 +1,48 @@ +/* + * This function is _not_ called directly. It is jumped to from PLT when + * attempting to use a symbol that has not yet been resolved. The first + * time a jump symbol (such as a function call inside a shared library) + * is used (before it gets resolved) it will jump here. When we get called + * the stack contains reloc_offset and tpnt is in MOF. + * + * We save all the registers, setup R10 and R11 with the right arguments + * then call _dl_linux_resolver(tpnt, reloc_offset). _dl_linux_resolver() + * figures out where the jump symbol is _really_ supposed to have jumped to + * and returns that to us. Once we have that, we overwrite tpnt with this + * fixed up address. We then clean up after ourselves, put all the registers + * back how we found them, then we jump to where the fixed up address, which + * is where the jump symbol that got us here really wanted to jump to in the + * first place. + */ + +.globl _dl_linux_resolve +.type _dl_linux_resolve,@function + +_dl_linux_resolve: + push $r13 + push $r12 + push $r11 + push $r10 + push $r9 + push $srp + move.d [$sp+6*4],$r11 + move $mof,$r10 +#ifdef __PIC__ + move.d $pc,$r0 + sub.d .:GOTOFF,$r0 + move.d _dl_linux_resolver:PLTG,$r9 + add.d $r0,$r9 + jsr $r9 +#else + jsr _dl_linux_resolver +#endif + move.d $r10,[$sp+6*4] + pop $srp + pop $r9 + pop $r10 + pop $r11 + pop $r12 + pop $r13 + jump [$sp+] + + .size _dl_linux_resolve, . - _dl_linux_resolve |