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__setjmp14.S revision 1.2 
      1 /*	$NetBSD: __setjmp14.S,v 1.2 2023/10/11 09:12:21 skrll Exp $	*/
      2 
      3 #include "SYS.h"
      4 #include "assym.h"
      5 
      6 #if defined(LIBC_SCCS)
      7 __RCSID("$NetBSD: __setjmp14.S,v 1.2 2023/10/11 09:12:21 skrll Exp $")
      8 #endif
      9 
     10 /*
     11  * C library -- _setjmp, _longjmp
     12  *
     13  *	longjmp(a,v)
     14  * will generate a "return(v?v:1)" from the last call to
     15  *	setjmp(a)
     16  * by restoring registers from the stack.
     17  * The previous signal state is restored.
     18  */
     19 
     20 ENTRY(__setjmp14)
     21 	l.sw	JB_PC(r3), lr		/* save return address */
     22 	l.sw	JB_LR(r3), lr		/* save return address */
     23 	l.sw	JB_SP(r3), r1		/* save stack pointer */
     24 	l.sw	JB_FP(r3), r2		/* save frame pointer */
     25 	l.sw	JB_R10(r3), r10		/* save callee saved register */
     26 	l.sw	JB_R14(r3), r14		/* save callee saved register */
     27 	l.sw	JB_R16(r3), r16		/* save callee saved register */
     28 	l.sw	JB_R18(r3), r18		/* save callee saved register */
     29 	l.sw	JB_R20(r3), r20		/* save callee saved register */
     30 	l.sw	JB_R22(r3), r22		/* save callee saved register */
     31 	l.sw	JB_R24(r3), r24		/* save callee saved register */
     32 	l.sw	JB_R26(r3), r26		/* save callee saved register */
     33 	l.sw	JB_R28(r3), r28		/* save callee saved register */
     34 	l.sw	JB_R30(r3), r30		/* save callee saved register */
     35 	l.addi	r4, r0, 1
     36 	l.sw	JB_MAGIC(r3), r4	/* note we saved sigmask */
     37 	l.addi	r5, r3, JB_SIGMASK	# &sigmask
     38 	l.xor	r4, r4, r4
     39 	l.addi	r3, r0, 0
     40 	_DOSYSCALL(__sigprocmask14)	# assume no error	XXX
     41 	l.xor	r11, r11, r11
     42 	l.jr	lr
     43 	l.nop
     44 END(__setjmp14)
     45 
     46 ENTRY(__longjmp14)
     47 	l.lwz	lr, JB_LR(r3)		/* get return address */
     48 	l.lwz	r1, JB_SP(r3)		/* get stack pointer */
     49 	l.lwz	r2, JB_FP(r3)		/* get frame pointer */
     50 	l.lwz	r10, JB_R10(r3)		/* get callee saved register */
     51 	l.lwz	r14, JB_R14(r3)		/* get callee saved register */
     52 	l.lwz	r16, JB_R16(r3)		/* get callee saved register */
     53 	l.lwz	r18, JB_R18(r3)		/* get callee saved register */
     54 	l.lwz	r20, JB_R20(r3)		/* get callee saved register */
     55 	l.lwz	r22, JB_R22(r3)		/* get callee saved register */
     56 	l.lwz	r24, JB_R24(r3)		/* get callee saved register */
     57 	l.lwz	r26, JB_R26(r3)		/* get callee saved register */
     58 	l.lwz	r28, JB_R28(r3)		/* get callee saved register */
     59 	l.lwz	r30, JB_R30(r3)		/* get callee saved register */
     60 	l.ori	r11, r4, 0
     61 	l.xor	r5, r5, r5
     62 	l.addi	r4, r3, JB_SIGMASK	# &sigmask
     63 	l.addi	r3, r0, SIG_SETMASK
     64 	_DOSYSCALL(__sigprocmask14)	# assume no error	XXX
     65 	l.addi	r6, r0, 1
     66 	l.sfeqi	r11, 0
     67 	l.cmov	r11, r6, r11
     68 	l.jr	lr
     69 	l.nop
     70 END(__longjmp14)
     71