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.global _longjmp .global longjmp .type _longjmp,@function .type longjmp,@function _longjmp: longjmp: # 0) move old return address into the link register ld 0, 0*8(3) mtlr 0 # 1) restore cr ld 0, 1*8(3) mtcr 0 # 2) restore SP ld 1, 2*8(3) # 3) restore TOC into both r2 and the caller's stack. # Which location is required depends on whether setjmp was called # locally or non-locally, but it's always safe to restore to both. ld 2, 3*8(3) std 2, 24(1) # 4) restore r14-r31 ld 14, 4*8(3) ld 15, 5*8(3) ld 16, 6*8(3) ld 17, 7*8(3) ld 18, 8*8(3) ld 19, 9*8(3) ld 20, 10*8(3) ld 21, 11*8(3) ld 22, 12*8(3) ld 23, 13*8(3) ld 24, 14*8(3) ld 25, 15*8(3) ld 26, 16*8(3) ld 27, 17*8(3) ld 28, 18*8(3) ld 29, 19*8(3) ld 30, 20*8(3) ld 31, 21*8(3) # 5) restore floating point registers f14-f31 lfd 14, 22*8(3) lfd 15, 23*8(3) lfd 16, 24*8(3) lfd 17, 25*8(3) lfd 18, 26*8(3) lfd 19, 27*8(3) lfd 20, 28*8(3) lfd 21, 29*8(3) lfd 22, 30*8(3) lfd 23, 31*8(3) lfd 24, 32*8(3) lfd 25, 33*8(3) lfd 26, 34*8(3) lfd 27, 35*8(3) lfd 28, 36*8(3) lfd 29, 37*8(3) lfd 30, 38*8(3) lfd 31, 39*8(3) # 6) restore vector registers v20-v31 addi 3, 3, 40*8 lvx 20, 0, 3 ; addi 3, 3, 16 lvx 21, 0, 3 ; addi 3, 3, 16 lvx 22, 0, 3 ; addi 3, 3, 16 lvx 23, 0, 3 ; addi 3, 3, 16 lvx 24, 0, 3 ; addi 3, 3, 16 lvx 25, 0, 3 ; addi 3, 3, 16 lvx 26, 0, 3 ; addi 3, 3, 16 lvx 27, 0, 3 ; addi 3, 3, 16 lvx 28, 0, 3 ; addi 3, 3, 16 lvx 29, 0, 3 ; addi 3, 3, 16 lvx 30, 0, 3 ; addi 3, 3, 16 lvx 31, 0, 3 # 7) return r4 ? r4 : 1 mr 3, 4 cmpwi cr7, 4, 0 bne cr7, 1f li 3, 1 1: blr |