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Import setjmp from glibc
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Vladimir Serbinenko committed
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/* Copyright (C) 1992, 1994, 1996, 1997, 2002, 2006, 2013 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <grub/symbol.h>
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#include <grub/dl.h>
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#define JB_S0 0
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#define JB_S1 1
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#define JB_S2 2
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#define JB_S3 3
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#define JB_S4 4
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#define JB_S5 5
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#define JB_PC 6
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#define JB_FP 7
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#define JB_SP 8
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#define JB_F2 9
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#define JB_F3 10
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#define JB_F4 11
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#define JB_F5 12
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#define JB_F6 13
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#define JB_F7 14
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#define JB_F8 15
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#define JB_F9 16
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#define v0 $0 /* function return value */
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#define t0 $1 /* temporary registers (caller-saved) */
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#define t1 $2
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#define t2 $3
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#define t3 $4
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#define t4 $5
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#define t5 $6
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#define t6 $7
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#define t7 $8
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#define s0 $9 /* saved-registers (callee-saved registers) */
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#define s1 $10
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#define s2 $11
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#define s3 $12
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#define s4 $13
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#define s5 $14
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#define s6 $15
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#define fp s6 /* frame-pointer (s6 in frame-less procedures) */
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#define a0 $16 /* argument registers (caller-saved) */
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#define a1 $17
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#define a2 $18
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#define a3 $19
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#define a4 $20
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#define a5 $21
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#define t8 $22 /* more temps (caller-saved) */
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#define t9 $23
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#define t10 $24
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#define t11 $25
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#define ra $26 /* return address register */
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#define t12 $27
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#define pv t12 /* procedure-variable register */
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#define AT $at /* assembler temporary */
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#define gp $29 /* global pointer */
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#define sp $30 /* stack pointer */
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#define zero $31 /* reads as zero, writes are noops */
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#define ENTRY(name) \
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.globl EXT_C(name); \
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.align 4; \
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.ent EXT_C(name), 0; \
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EXT_C(name): \
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.frame sp, 0, ra
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GRUB_MOD_LICENSE "GPLv3+"
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.text
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ENTRY(grub_setjmp)
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ldgp gp, 0(pv)
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#ifndef PIC
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#define FRAME 16
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subq sp, FRAME, sp
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.frame sp, FRAME, ra, 0
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stq ra, 0(sp)
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.mask 0x04000000, -FRAME
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#else
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#define FRAME 0
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.frame sp, FRAME, ra, 0
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#endif
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#ifdef PROF
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.set noat
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lda AT, _mcount
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jsr AT, (AT), _mcount
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.set at
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#endif
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.prologue 1
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mov 0, a1
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stq s0, JB_S0*8(a0)
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stq s1, JB_S1*8(a0)
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stq s2, JB_S2*8(a0)
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stq s3, JB_S3*8(a0)
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stq s4, JB_S4*8(a0)
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stq s5, JB_S5*8(a0)
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#ifdef PTR_MANGLE
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PTR_MANGLE(t1, ra, t0)
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stq t1, JB_PC*8(a0)
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#else
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stq ra, JB_PC*8(a0)
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#endif
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#if defined(PTR_MANGLE) && FRAME == 0
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PTR_MANGLE2(t1, sp, t0)
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#else
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addq sp, FRAME, t1
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# ifdef PTR_MANGLE
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PTR_MANGLE2(t1, t1, t0)
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# endif
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#endif
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stq t1, JB_SP*8(a0)
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#ifdef PTR_MANGLE
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PTR_MANGLE2(t1, fp, t0)
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stq t1, JB_FP*8(a0)
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#else
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stq fp, JB_FP*8(a0)
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#endif
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stt $f2, JB_F2*8(a0)
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stt $f3, JB_F3*8(a0)
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stt $f4, JB_F4*8(a0)
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stt $f5, JB_F5*8(a0)
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stt $f6, JB_F6*8(a0)
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stt $f7, JB_F7*8(a0)
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stt $f8, JB_F8*8(a0)
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stt $f9, JB_F9*8(a0)
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mov 0, v0
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ret
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.end grub_setjmp
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ENTRY(grub_longjmp)
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#ifdef PROF
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ldgp gp, 0(pv)
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.set noat
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lda AT, _mcount
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jsr AT, (AT), _mcount
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.set at
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.prologue 1
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#else
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.prologue 0
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#endif
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mov a1, v0
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ldq s0, JB_S0*8(a0)
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ldq s1, JB_S1*8(a0)
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ldq s2, JB_S2*8(a0)
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ldq s3, JB_S3*8(a0)
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ldq s4, JB_S4*8(a0)
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ldq s5, JB_S5*8(a0)
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ldq ra, JB_PC*8(a0)
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ldq fp, JB_FP*8(a0)
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ldq t0, JB_SP*8(a0)
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ldt $f2, JB_F2*8(a0)
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ldt $f3, JB_F3*8(a0)
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ldt $f4, JB_F4*8(a0)
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ldt $f5, JB_F5*8(a0)
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ldt $f6, JB_F6*8(a0)
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ldt $f7, JB_F7*8(a0)
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ldt $f8, JB_F8*8(a0)
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ldt $f9, JB_F9*8(a0)
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#ifdef PTR_DEMANGLE
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PTR_DEMANGLE(ra, t1)
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PTR_DEMANGLE2(t0, t1)
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PTR_DEMANGLE2(fp, t1)
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#endif
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cmoveq v0, 1, v0
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mov t0, sp
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ret
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.end EXT_C(grub_longjmp)
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@@ -14,6 +14,7 @@
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#elif defined(__arm__)
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#include "./arm/setjmp.S"
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#elif defined(__alpha__)
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#include "./alpha/setjmp.S"
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#else
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#error "Unknown target cpu type"
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#endif
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@@ -0,0 +1,28 @@
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2002,2004,2006,2007,2009 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef GRUB_SETJMP_CPU_HEADER
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#define GRUB_SETJMP_CPU_HEADER 1
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typedef long int grub_jmp_buf[17];
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int grub_setjmp (grub_jmp_buf env) RETURNS_TWICE;
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void grub_longjmp (grub_jmp_buf env, int val) __attribute__ ((noreturn));
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#endif /* ! GRUB_SETJMP_CPU_HEADER */
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