rtld/sparcv9/boot_elf.s

5  * Common Development and Distribution License (the "License").
11  * and limitations under the License.
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
81  * PC-relative jumps, and the rdpc instruction is very slow.
83  * At the time of writing, the present and future SPARC CPUs that will use
84  * this code are only capable of addressing the bottom 43-bits and top 43-bits
97  * the result of a sethi (. - .PLT0), and %o1 containing the pc of
159  * routine twice - once for PLT0 and once for PLT1 with different
162  * The plt entries (PLT0 and PLT1) look like:
219 	iflush	%i0			! .. and flush
229 	and	%o2, 0x3ff, %o2		! pick out bits 42-33
232 	iflush	%i0 + 8			! .. and flush
241 	iflush	%i0 + 0x10		! .. and flush
245 	and	%i1, 0x3ff, %o2		! get %lo(function address)
252 	iflush	%i0 + 0x18		! .. and flush
300  * However, shorter instruction sequences are possible and useful.
354  * Note that even in the 44-bit case, we deliberately use both %g5 and
409 	iflush	%o0 + 0xc		! .. and flush
413 	and	%o4, 0x3ff, %o2		! pick out bits 0-9
416 	iflush	%o0 + 0x8		! .. and flush
427 	iflush	%o0			! .. and flush
459 	and	%o1, 0xfff, %o2		! lower 12 bits of function address
462 	iflush	%o0 + 0x10		! .. and flush
470 	and	%o2, 0x3ff, %o2		! pick out bits 21-12
473 	iflush	%o0 + 8			! .. and flush
484 	iflush	%o0			! .. and flush
514 	and	%o1, 0x3ff, %o2		! lower 10 bits of function address
517 	iflush	%o0 + 0x18		! .. and flush
526 	iflush	%o0 + 0x10		! .. and flush
531 	and	%o2, 0x3ff, %o2		! pick out bits 42-33
539 	iflush	%o0 + 8			! .. and flush
550 	iflush	%o0			! .. and flush
598  * us and placed the following entries in it:
678 	 * routine.  Instead we jump to it and remove ourself
703 	 * First we check the size of the callers stack and grow
712 	 * way to distinquish between 'argument passing' and
725 	 *	 are in reg-windows and not on the stack.
745 	 * the register windows and such and do not need to be duplicated