Lines Matching +full:a +full:- +full:f0 +full:- +full:9

1 /* SPDX-License-Identifier: GPL-2.0 */
5  * Kernel entry-points.
8 #include <asm/asm-offsets.h>
39 	.size	\func, . - \func
43  * This defines the normal kernel pt-regs layout.
45  * regs 9-15 preserved by C code
46  * regs 16-18 saved by PAL-code
47  * regs 29-30 saved and set up by PAL-code
48  * JRP - Save regs 16-18 in a special area of the stack, so that
49  * the palcode-provided values are available to the signal handler.
149 	.cfi_adjust_cfa_offset	-SP_OFF
155 	.cfi_rel_offset	$9, 0
167 	.cfi_restore	$9
174 	.cfi_adjust_cfa_offset	-SWITCH_STACK_SIZE
178  * Non-syscall kernel entry points.
201 /* save $9 - $15 so the inline exception code can manipulate them.  */
204 	stq	$9, 0($sp)
211 	.cfi_rel_offset	$9, 0
224 	ldq	$9, 0($sp)
232 	.cfi_restore	$9
239 	.cfi_adjust_cfa_offset	-56
254 	lda	$sp, -256($sp)
265 	bne	$0, entUnaUser	/* yup -> do user-level unaligned fault */
270 	stq	$9, 72($sp)
277 	/* 16-18 PAL-saved */
298 	.cfi_rel_offset	$9, 9*8
329 	ldq	$9, 72($sp)
336 	/* 16-18 PAL-saved */
357 	.cfi_restore	$9
375 	.cfi_adjust_cfa_offset	-256
384 	.cfi_adjust_cfa_offset	-256
386 	lda	$sp, -56($sp)
388 	stq	$9, 0($sp)
395 	.cfi_rel_offset	$9, 0
406 	ldq	$9, 0($sp)
414 	.cfi_restore	$9
421 	.cfi_adjust_cfa_offset	-56
436  * like a function call to userspace as far as clobbered registers.  We
442  * Note that a0-a2 are not saved by PALcode as with the other entry points.
485 	cmovne	$26, 0, $18		/* $18 = 0 => non-restartable */
514 	 * frame to indicate that a negative return value wasn't an
539  *      $18: The old syscall number, or zero if this is not a return
540  *           from a syscall that errored and is possibly restartable.
622 	mov	$18, $9		/* save old syscall number */
625 	mov	$9, $18
634  * Save and restore the switch stack -- aka the balance of the user context.
644 	lda	$sp, -SWITCH_STACK_SIZE($sp)
646 	stq	$9, 0($sp)
654 	stt	$f0, 64($sp)
682 	mf_fpcr	$f0		# get fpcr
686 	stt	$f0, 312($sp)	# save fpcr in slot of $f31
687 	ldt	$f0, 64($sp)	# dont let "do_switch_stack" change fp state.
690 	.size	do_switch_stack, .-do_switch_stack
698 	ldq	$9, 0($sp)
707 	ldt	$f0, 64($sp)
742 	.size	undo_switch_stack, .-undo_switch_stack
761 	.size	alpha_switch_to, .-alpha_switch_to
777  * ... and new kernel threads - here
785 	mov	$9, $27
787 	jsr	$26, ($9)
821 	lda	$9, ret_from_straced
822 	cmpult	$26, $9, $9
823 	lda	$sp, -SWITCH_STACK_SIZE($sp)
825 	bne	$9, 1f
845 	   Store a non-zero there - -ENOSYS we need in register
848 	lda	$0, -ENOSYS