diff options
Diffstat (limited to 'grub-core/lib/ia64')
| -rw-r--r-- | grub-core/lib/ia64/longjmp.S | 162 | ||||
| -rw-r--r-- | grub-core/lib/ia64/setjmp.S | 177 |
2 files changed, 339 insertions, 0 deletions
diff --git a/grub-core/lib/ia64/longjmp.S b/grub-core/lib/ia64/longjmp.S new file mode 100644 index 0000000..38afb22 --- /dev/null +++ b/grub-core/lib/ia64/longjmp.S @@ -0,0 +1,162 @@ +/* Copyright (C) 1999, 2000, 2001, 2002, 2008 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. + + Note that __sigsetjmp() did NOT flush the register stack. Instead, + we do it here since __longjmp() is usually much less frequently + invoked than __sigsetjmp(). The only difficulty is that __sigsetjmp() + didn't (and wouldn't be able to) save ar.rnat either. This is a problem + because if we're not careful, we could end up loading random NaT bits. + There are two cases: + + (i) ar.bsp < ia64_rse_rnat_addr(jmpbuf.ar_bsp) + ar.rnat contains the desired bits---preserve ar.rnat + across loadrs and write to ar.bspstore + + (ii) ar.bsp >= ia64_rse_rnat_addr(jmpbuf.ar_bsp) + The desired ar.rnat is stored in + ia64_rse_rnat_addr(jmpbuf.ar_bsp). Load those + bits into ar.rnat after setting ar.bspstore. */ + + + +# define pPos p6 /* is rotate count positive? */ +# define pNeg p7 /* is rotate count negative? */ + + + /* __longjmp(__jmp_buf buf, int val) */ + + .text + + .proc EXT_C(grub_longjmp) +FUNCTION(grub_longjmp) + alloc r8=ar.pfs,2,1,0,0 + mov r27=ar.rsc + add r2=0x98,in0 // r2 <- &jmpbuf.orig_jmp_buf_addr + ;; + ld8 r8=[r2],-16 // r8 <- orig_jmp_buf_addr + mov r10=ar.bsp + and r11=~0x3,r27 // clear ar.rsc.mode + ;; + flushrs // flush dirty regs to backing store (must be first in insn grp) + ld8 r23=[r2],8 // r23 <- jmpbuf.ar_bsp + sub r8=r8,in0 // r8 <- &orig_jmpbuf - &jmpbuf + ;; + ld8 r25=[r2] // r25 <- jmpbuf.ar_unat + extr.u r8=r8,3,6 // r8 <- (&orig_jmpbuf - &jmpbuf)/8 & 0x3f + ;; + cmp.lt pNeg,pPos=r8,r0 + mov r2=in0 + ;; +(pPos) mov r16=r8 +(pNeg) add r16=64,r8 +(pPos) sub r17=64,r8 +(pNeg) sub r17=r0,r8 + ;; + mov ar.rsc=r11 // put RSE in enforced lazy mode + shr.u r8=r25,r16 + add r3=8,in0 // r3 <- &jmpbuf.r1 + shl r9=r25,r17 + ;; + or r25=r8,r9 + ;; + mov r26=ar.rnat + 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) + cmp.geu p8,p0=r10,r11 // p8 <- (ar.bsp >= jmpbuf.ar_bsp) + ;; + 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 + ;; +(p8) ld8 r26=[r11] // r26 <- *ia64_rse_rnat_addr(jmpbuf.ar_bsp) + mov ar.bspstore=r23 // restore ar.bspstore + ;; + ld8.nta r18=[r2],16 // b2 + ld8.nta r19=[r3],16 // b3 + ;; + ld8.nta r20=[r2],16 // b4 + ld8.nta r21=[r3],16 // b5 + ;; + ld8.nta r11=[r2],16 // ar.pfs + ld8.nta r22=[r3],56 // ar.lc + ;; + ld8.nta r24=[r2],32 // pr + 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 + ;; + ldf.fill.nta f30=[r2] + ldf.fill.nta f31=[r3] +(p8) mov r8=1 + + mov ar.rnat=r26 // restore ar.rnat + ;; + mov ar.rsc=r27 // restore ar.rsc +(p9) mov r8=in1 + + invala // virt. -> phys. regnum mapping may change + mov pr=r24,-1 + br.ret.dptk.few rp + .endp EXT_C(grub_longjmp) diff --git a/grub-core/lib/ia64/setjmp.S b/grub-core/lib/ia64/setjmp.S new file mode 100644 index 0000000..a0382d8 --- /dev/null +++ b/grub-core/lib/ia64/setjmp.S @@ -0,0 +1,177 @@ +/* Copyright (C) 1999, 2000, 2001, 2002, 2008 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. + + The layout of the jmp_buf is as follows. This is subject to change + and user-code should never depend on the particular layout of + jmp_buf! + + + offset: description: + ------- ------------ + 0x000 stack pointer (r12) ; unchangeable (see _JMPBUF_UNWINDS) + 0x008 r1 (gp) + 0x010 caller's unat + 0x018 fpsr + 0x020 r4 + 0x028 r5 + 0x030 r6 + 0x038 r7 + 0x040 rp (b0) + 0x048 b1 + 0x050 b2 + 0x058 b3 + 0x060 b4 + 0x068 b5 + 0x070 ar.pfs + 0x078 ar.lc + 0x080 pr + 0x088 ar.bsp ; unchangeable (see __longjmp.S) + 0x090 ar.unat + 0x098 &__jmp_buf ; address of the jmpbuf (needed to locate NaT bits in unat) + 0x0a0 f2 + 0x0b0 f3 + 0x0c0 f4 + 0x0d0 f5 + 0x0e0 f16 + 0x0f0 f17 + 0x100 f18 + 0x110 f19 + 0x120 f20 + 0x130 f21 + 0x130 f22 + 0x140 f23 + 0x150 f24 + 0x160 f25 + 0x170 f26 + 0x180 f27 + 0x190 f28 + 0x1a0 f29 + 0x1b0 f30 + 0x1c0 f31 */ + +#include <grub/symbol.h> +#include <grub/dl.h> + + .file "setjmp.S" + +GRUB_MOD_LICENSE "GPLv2+" + + /* The following two entry points are the traditional entry points: */ + + .text + + .proc EXT_C(grub_setjmp) +FUNCTION(grub_setjmp) + alloc r8=ar.pfs,2,0,0,0 + mov in1=1 + br.cond.sptk.many __sigsetjmp + .endp EXT_C(grub_setjmp) + + /* __sigsetjmp(__jmp_buf buf, int savemask) */ + + .proc __sigsetjmp +__sigsetjmp: + //.prologue ASM_UNW_PRLG_RP|ASM_UNW_PRLG_PFS, ASM_UNW_PRLG_GRSAVE(2) + alloc loc1=ar.pfs,2,2,2,0 + mov r16=ar.unat + ;; + mov r17=ar.fpsr + mov r2=in0 + add r3=8,in0 + ;; + st8.spill.nta [r2]=sp,16 // r12 (sp) + st8.spill.nta [r3]=gp,16 // r1 (gp) + ;; + st8.nta [r2]=r16,16 // save caller's unat + st8.nta [r3]=r17,16 // save fpsr + add r8=0xa0,in0 + ;; + st8.spill.nta [r2]=r4,16 // r4 + st8.spill.nta [r3]=r5,16 // r5 + add r9=0xb0,in0 + ;; + stf.spill.nta [r8]=f2,32 + stf.spill.nta [r9]=f3,32 + mov loc0=rp + .body + ;; + stf.spill.nta [r8]=f4,32 + stf.spill.nta [r9]=f5,32 + mov r17=b1 + ;; + stf.spill.nta [r8]=f16,32 + stf.spill.nta [r9]=f17,32 + mov r18=b2 + ;; + stf.spill.nta [r8]=f18,32 + stf.spill.nta [r9]=f19,32 + mov r19=b3 + ;; + stf.spill.nta [r8]=f20,32 + stf.spill.nta [r9]=f21,32 + mov r20=b4 + ;; + stf.spill.nta [r8]=f22,32 + stf.spill.nta [r9]=f23,32 + mov r21=b5 + ;; + stf.spill.nta [r8]=f24,32 + stf.spill.nta [r9]=f25,32 + mov r22=ar.lc + ;; + stf.spill.nta [r8]=f26,32 + stf.spill.nta [r9]=f27,32 + mov r24=pr + ;; + stf.spill.nta [r8]=f28,32 + stf.spill.nta [r9]=f29,32 + ;; + stf.spill.nta [r8]=f30 + stf.spill.nta [r9]=f31 + + st8.spill.nta [r2]=r6,16 // r6 + st8.spill.nta [r3]=r7,16 // r7 + ;; + mov r23=ar.bsp + mov r25=ar.unat + mov out0=in0 + + st8.nta [r2]=loc0,16 // b0 + st8.nta [r3]=r17,16 // b1 + mov out1=in1 + ;; + st8.nta [r2]=r18,16 // b2 + st8.nta [r3]=r19,16 // b3 + ;; + st8.nta [r2]=r20,16 // b4 + st8.nta [r3]=r21,16 // b5 + ;; + st8.nta [r2]=loc1,16 // ar.pfs + st8.nta [r3]=r22,16 // ar.lc + ;; + st8.nta [r2]=r24,16 // pr + st8.nta [r3]=r23,16 // ar.bsp + ;; + st8.nta [r2]=r25 // ar.unat + st8.nta [r3]=in0 // &__jmp_buf + mov r8=0 + mov rp=loc0 + mov ar.pfs=loc1 + br.ret.sptk.many rp + + .endp __sigsetjmp |