diff options
Diffstat (limited to 'ports/sysdeps/unix/sysv/linux/ia64/nptl/__ia64_longjmp.S')
| -rw-r--r-- | ports/sysdeps/unix/sysv/linux/ia64/nptl/__ia64_longjmp.S | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/ports/sysdeps/unix/sysv/linux/ia64/nptl/__ia64_longjmp.S b/ports/sysdeps/unix/sysv/linux/ia64/nptl/__ia64_longjmp.S new file mode 100644 index 0000000000..7f3648d98b --- /dev/null +++ b/ports/sysdeps/unix/sysv/linux/ia64/nptl/__ia64_longjmp.S @@ -0,0 +1,158 @@ +/* Copyright (C) 1999, 2000, 2001, 2004, 2005 Free Software Foundation, Inc. + Contributed by David Mosberger-Tang <davidm@hpl.hp.com>. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> +#include <features.h> + +LEAF(__ia64_flush_rbs) + flushrs + mov r9 = ar.rsc // 12 cyc latency + ;; + mov r8 = ar.bsp // 12 cyc latency + ;; + and r16 = ~0x3, r9 // clear ar.rsc.mode + ;; + mov ar.rsc = r16 // put RSE into enforced-lazy mode + ;; + mov r10 = ar.rnat // 5 cyc latency + ret +END(__ia64_flush_rbs) + + +# define pPos p6 /* is rotate count positive? */ +# define pNeg p7 /* is rotate count negative? */ + +/* __ia64_longjmp(__jmp_buf buf, int val, long rnat, long rsc) */ + + +LEAF(__ia64_longjmp) + alloc r8=ar.pfs,4,0,0,0 + add r2=0x98,in0 // r2 <- &jmpbuf.orig_jmp_buf_addr + add r3=0x88,in0 // r3 <- &jmpbuf.ar_bsp + ;; + ld8 r8=[r2] // r8 <- orig_jmp_buf_addr + ld8 r23=[r3],8 // r23 <- jmpbuf.ar_bsp + mov r2=in0 + ;; + // + // Note: we need to redo the "flushrs" here even though it's + // already been done by __ia64_flush_rbs. It is needed to + // ensure that ar.bspstore == ar.bsp. + // + flushrs // flush dirty regs to backing store + ld8 r25=[r3] // r25 <- jmpbuf.ar_unat + sub r8=r8,in0 // r8 <- &orig_jmpbuf - &jmpbuf + ;; + add r3=8,in0 // r3 <- &jmpbuf.r1 + extr.u r8=r8,3,6 // r8 <- (&orig_jmpbuf - &jmpbuf)/8 & 0x3f + ;; + cmp.lt pNeg,pPos=r8,r0 + ;; +(pPos) mov r16=r8 +(pNeg) add r16=64,r8 +(pPos) sub r17=64,r8 +(pNeg) sub r17=r0,r8 + ;; + shr.u r8=r25,r16 + shl r9=r25,r17 + ;; + or r25=r8,r9 + ;; + mov ar.unat=r25 // setup ar.unat (NaT bits for r1, r4-r7, and r12) + ;; + ld8.fill.nta sp=[r2],16 // r12 (sp) + ld8.fill.nta gp=[r3],16 // r1 (gp) + dep r11=-1,r23,3,6 // r11 <- ia64_rse_rnat_addr(jmpbuf.ar_bsp) + ;; + ld8.nta r16=[r2],16 // caller's unat + ld8.nta r17=[r3],16 // fpsr + ;; + ld8.fill.nta r4=[r2],16 // r4 + ld8.fill.nta r5=[r3],16 // r5 (gp) + ;; + ld8.fill.nta r6=[r2],16 // r6 + ld8.fill.nta r7=[r3],16 // r7 + ;; + mov ar.unat=r16 // restore caller's unat + mov ar.fpsr=r17 // restore fpsr + ;; + ld8.nta r16=[r2],16 // b0 + ld8.nta r17=[r3],16 // b1 + ;; + mov ar.bspstore=r23 // restore ar.bspstore + ld8.nta r18=[r2],16 // b2 + ;; + mov ar.rnat=in2 // restore ar.rnat + ld8.nta r19=[r3],16 // b3 + ;; + ld8.nta r20=[r2],16 // b4 + ld8.nta r21=[r3],16 // b5 +#ifdef PTR_DEMANGLE + PTR_DEMANGLE (r16, r24) +#endif + ;; + ld8.nta r11=[r2],16 // ar.pfs + ld8.nta r22=[r3],56 // ar.lc + ;; + ld8.nta r24=[r2],32 // pr + mov ar.rsc=in3 // restore ar.rsc + mov b0=r16 + ;; + ldf.fill.nta f2=[r2],32 + ldf.fill.nta f3=[r3],32 + mov b1=r17 + ;; + ldf.fill.nta f4=[r2],32 + ldf.fill.nta f5=[r3],32 + mov b2=r18 + ;; + ldf.fill.nta f16=[r2],32 + ldf.fill.nta f17=[r3],32 + mov b3=r19 + ;; + ldf.fill.nta f18=[r2],32 + ldf.fill.nta f19=[r3],32 + mov b4=r20 + ;; + ldf.fill.nta f20=[r2],32 + ldf.fill.nta f21=[r3],32 + mov b5=r21 + ;; + ldf.fill.nta f22=[r2],32 + ldf.fill.nta f23=[r3],32 + mov ar.lc=r22 + ;; + ldf.fill.nta f24=[r2],32 + ldf.fill.nta f25=[r3],32 + cmp.eq p8,p9=0,in1 + ;; + ldf.fill.nta f26=[r2],32 + ldf.fill.nta f27=[r3],32 + mov ar.pfs=r11 + ;; + ldf.fill.nta f28=[r2],32 + ldf.fill.nta f29=[r3],32 +(p8) mov r8=1 + ;; + ldf.fill.nta f30=[r2] + ldf.fill.nta f31=[r3] +(p9) mov r8=in1 + + invala // virt. -> phys. regnum mapping may change + mov pr=r24,-1 + ret +END(__ia64_longjmp) |