/* Support functions for the unwinder.
Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc.
Contributed by Paul Brook
This file is free software Free Software Foundation
In addition to the permissions in the GNU General Public License, the
Free Software Foundation gives you unlimited permission to link the
compiled version of this file into combinations with other programs,
and to distribute those combinations without any restriction coming
from the use of this file. (The General Public License restrictions
do apply in other respects executable.)
This file is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program Boston, MA 02110-1301, USA. */
#ifndef __symbian__
#include "lib1funcs.asm"
.macro UNPREFIX name
.global SYM (\name)
EQUIV SYM (\name), SYM (__\name)
.endm
/* r0 points to a 16-word block. Upload these values to the actual core
state. */
ARM_FUNC_START restore_core_regs
/* We must use sp as the base register when restoring sp. Push the
last 3 registers onto the top of the current stack to achieve
this. */
add r1, r0, #52
ldmia r1, {r3, r4, r5} /* {sp, lr, pc}. */
/* APPLE LOCAL begin v7 support. Merge from mainline */
#if defined(__thumb2__)
/* Thumb-2 doesn't allow sp in a load-multiple instruction, so push
the target address onto the target stack. This is safe as
we're always returning to somewhere further up the call stack. */
mov ip, r3
mov lr, r4
str r5, [ip, #-4]!
#elif defined(__INTERWORKING__)
/* APPLE LOCAL end v7 support. Merge from mainline */
/* Restore pc into ip. */
mov r2, r5
stmfd sp!, {r2, r3, r4}
#else
stmfd sp!, {r3, r4, r5}
#endif
/* Don't bother restoring ip. */
ldmia r0, {r0, r1, r2, r3, r4, r5, r6, r7, r8, r9, sl, fp}
/* APPLE LOCAL begin v7 support. Merge from mainline */
#if defined(__thumb2__)
/* Pop the return address off the target stack. */
mov sp, ip
pop {pc}
#elif defined(__INTERWORKING__)
/* Pop the three registers we pushed earlier. */
/* APPLE LOCAL end v7 support. Merge from mainline */
ldmfd sp, {ip, sp, lr}
bx ip
#else
ldmfd sp, {sp, lr, pc}
#endif
FUNC_END restore_core_regs
UNPREFIX restore_core_regs
/* APPLE LOCAL begin v7 support. Merge from mainline */
/* Load VFP registers d0-d15 from the address in r0.
Use this to load from FSTMX format. */
/* APPLE LOCAL end v7 support. Merge from mainline */
ARM_FUNC_START gnu_Unwind_Restore_VFP
/* Use the generic coprocessor form so that gas doesn't complain
on soft-float targets. */
ldc p11,cr0,[r0],{0x21} /* fldmiax r0, {d0-d15} */
RET
/* APPLE LOCAL begin v7 support. Merge from mainline */
/* Store VFP registers d0-d15 to the address in r0.
Use this to store in FSTMX format. */
/* APPLE LOCAL end v7 support. Merge from mainline */
ARM_FUNC_START gnu_Unwind_Save_VFP
/* Use the generic coprocessor form so that gas doesn't complain
on soft-float targets. */
stc p11,cr0,[r0],{0x21} /* fstmiax r0, {d0-d15} */
RET
/* APPLE LOCAL begin v7 support. Merge from mainline */
/* Load VFP registers d0-d15 from the address in r0.
Use this to load from FSTMD format. */
ARM_FUNC_START gnu_Unwind_Restore_VFP_D
ldc p11,cr0,[r0],{0x20} /* fldmiad r0, {d0-d15} */
RET
/* Store VFP registers d0-d15 to the address in r0.
Use this to store in FLDMD format. */
ARM_FUNC_START gnu_Unwind_Save_VFP_D
stc p11,cr0,[r0],{0x20} /* fstmiad r0, {d0-d15} */
RET
/* Load VFP registers d16-d31 from the address in r0.
Use this to load from FSTMD (=VSTM) format. Needs VFPv3. */
ARM_FUNC_START gnu_Unwind_Restore_VFP_D_16_to_31
ldcl p11,cr0,[r0],{0x20} /* vldm r0, {d16-d31} */
RET
/* Store VFP registers d16-d31 to the address in r0.
Use this to store in FLDMD (=VLDM) format. Needs VFPv3. */
ARM_FUNC_START gnu_Unwind_Save_VFP_D_16_to_31
stcl p11,cr0,[r0],{0x20} /* vstm r0, {d16-d31} */
RET
/* APPLE LOCAL end v7 support. Merge from mainline */
/* APPLE LOCAL begin v7 support. Merge from Codesourcery */
ARM_FUNC_START gnu_Unwind_Restore_WMMXD
/* Use the generic coprocessor form so that gas doesn't complain
on non-iWMMXt targets. */
ldcl p1, cr0, [r0], #8 /* wldrd wr0, [r0], #8 */
ldcl p1, cr1, [r0], #8 /* wldrd wr1, [r0], #8 */
ldcl p1, cr2, [r0], #8 /* wldrd wr2, [r0], #8 */
ldcl p1, cr3, [r0], #8 /* wldrd wr3, [r0], #8 */
ldcl p1, cr4, [r0], #8 /* wldrd wr4, [r0], #8 */
ldcl p1, cr5, [r0], #8 /* wldrd wr5, [r0], #8 */
ldcl p1, cr6, [r0], #8 /* wldrd wr6, [r0], #8 */
ldcl p1, cr7, [r0], #8 /* wldrd wr7, [r0], #8 */
ldcl p1, cr8, [r0], #8 /* wldrd wr8, [r0], #8 */
ldcl p1, cr9, [r0], #8 /* wldrd wr9, [r0], #8 */
ldcl p1, cr10, [r0], #8 /* wldrd wr10, [r0], #8 */
ldcl p1, cr11, [r0], #8 /* wldrd wr11, [r0], #8 */
ldcl p1, cr12, [r0], #8 /* wldrd wr12, [r0], #8 */
ldcl p1, cr13, [r0], #8 /* wldrd wr13, [r0], #8 */
ldcl p1, cr14, [r0], #8 /* wldrd wr14, [r0], #8 */
ldcl p1, cr15, [r0], #8 /* wldrd wr15, [r0], #8 */
RET
ARM_FUNC_START gnu_Unwind_Save_WMMXD
/* Use the generic coprocessor form so that gas doesn't complain
on non-iWMMXt targets. */
stcl p1, cr0, [r0], #8 /* wstrd wr0, [r0], #8 */
stcl p1, cr1, [r0], #8 /* wstrd wr1, [r0], #8 */
stcl p1, cr2, [r0], #8 /* wstrd wr2, [r0], #8 */
stcl p1, cr3, [r0], #8 /* wstrd wr3, [r0], #8 */
stcl p1, cr4, [r0], #8 /* wstrd wr4, [r0], #8 */
stcl p1, cr5, [r0], #8 /* wstrd wr5, [r0], #8 */
stcl p1, cr6, [r0], #8 /* wstrd wr6, [r0], #8 */
stcl p1, cr7, [r0], #8 /* wstrd wr7, [r0], #8 */
stcl p1, cr8, [r0], #8 /* wstrd wr8, [r0], #8 */
stcl p1, cr9, [r0], #8 /* wstrd wr9, [r0], #8 */
stcl p1, cr10, [r0], #8 /* wstrd wr10, [r0], #8 */
stcl p1, cr11, [r0], #8 /* wstrd wr11, [r0], #8 */
stcl p1, cr12, [r0], #8 /* wstrd wr12, [r0], #8 */
stcl p1, cr13, [r0], #8 /* wstrd wr13, [r0], #8 */
stcl p1, cr14, [r0], #8 /* wstrd wr14, [r0], #8 */
stcl p1, cr15, [r0], #8 /* wstrd wr15, [r0], #8 */
RET
ARM_FUNC_START gnu_Unwind_Restore_WMMXC
/* Use the generic coprocessor form so that gas doesn't complain
on non-iWMMXt targets. */
ldc2 p1, cr8, [r0], #4 /* wldrw wcgr0, [r0], #4 */
ldc2 p1, cr9, [r0], #4 /* wldrw wcgr1, [r0], #4 */
ldc2 p1, cr10, [r0], #4 /* wldrw wcgr2, [r0], #4 */
ldc2 p1, cr11, [r0], #4 /* wldrw wcgr3, [r0], #4 */
RET
ARM_FUNC_START gnu_Unwind_Save_WMMXC
/* Use the generic coprocessor form so that gas doesn't complain
on non-iWMMXt targets. */
stc2 p1, cr8, [r0], #4 /* wstrw wcgr0, [r0], #4 */
stc2 p1, cr9, [r0], #4 /* wstrw wcgr1, [r0], #4 */
stc2 p1, cr10, [r0], #4 /* wstrw wcgr2, [r0], #4 */
stc2 p1, cr11, [r0], #4 /* wstrw wcgr3, [r0], #4 */
RET
/* APPLE LOCAL end v7 support. Merge from Codesourcery */
/* Wrappers to save core registers, then call the real routine. */
.macro UNWIND_WRAPPER name nargs
ARM_FUNC_START \name
/* Create a phase2_vrs structure. */
/* Split reg push in two to ensure the correct value for sp. */
/* APPLE LOCAL begin v7 support. Merge from mainline */
#if defined(__thumb2__)
mov ip, sp
push {lr} /* PC is ignored. */
push {ip, lr} /* Push original SP and LR. */
#else
stmfd sp!, {sp, lr, pc}
#endif
/* APPLE LOCAL end v7 support. Merge from mainline */
stmfd sp!, {r0, r1, r2, r3, r4, r5, r6, r7, r8, r9, sl, fp, ip}
/* Demand-save flags, plus an extra word for alignment. */
mov r3, #0
stmfd sp!, {r2, r3}
/* Point r1 at the block. Pass r[0..nargs) unchanged. */
add r\nargs, sp, #4
/* APPLE LOCAL v7 support. Merge from mainline */
#if defined(__thumb__) && !defined(__thumb2__)
/* Switch back to thumb mode to avoid interworking hassle. */
adr ip, .L1_\name
orr ip, ip, #1
bx ip
.thumb
.L1_\name:
bl SYM (__gnu\name) __PLT__
ldr r3, [sp, #64]
add sp, #72
bx r3
#else
bl SYM (__gnu\name) __PLT__
ldr lr, [sp, #64]
add sp, sp, #72
RET
#endif
FUNC_END \name
UNPREFIX \name
.endm
UNWIND_WRAPPER _Unwind_RaiseException 1
UNWIND_WRAPPER _Unwind_Resume 1
UNWIND_WRAPPER _Unwind_Resume_or_Rethrow 1
UNWIND_WRAPPER _Unwind_ForcedUnwind 3
#endif /* __symbian__ */