diff options
| author | Paolo Bonzini <pbonzini@redhat.com> | 2010-02-18 21:25:23 +0100 |
|---|---|---|
| committer | Blue Swirl <blauwirbel@gmail.com> | 2010-02-18 20:38:35 +0000 |
| commit | 24ebf5f31a178051cff1a4aab5ba621037191577 (patch) | |
| tree | cea4158f79e102f29e5719332d6a84ca732645af /hostregs_helper.h | |
| parent | df2a54e6987172ad5de725b541e3650834d329bf (diff) | |
get rid of hostregs_helper.h
Since b567b38 (target-arm: remove T0 and T1, 2009-10-16) the only global
register that is used is AREG0, so the complexity of hostregs_helper.h
is unused. Use regular assignments and a compiler optimization barrier.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Diffstat (limited to 'hostregs_helper.h')
| -rw-r--r-- | hostregs_helper.h | 61 |
1 files changed, 0 insertions, 61 deletions
diff --git a/hostregs_helper.h b/hostregs_helper.h deleted file mode 100644 index 3a0bece81c..0000000000 --- a/hostregs_helper.h +++ /dev/null @@ -1,61 +0,0 @@ -/* - * Save/restore host registers. - * - * Copyright (c) 2007 CodeSourcery - * - * This 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 of the License, or (at your option) any later version. - * - * This 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 this library; if not, see <http://www.gnu.org/licenses/>. - */ - -/* The GCC global register variable extension is used to reserve some - host registers for use by generated code. However only the core parts of - the translation engine are compiled with these settings. We must manually - save/restore these registers when called from regular code. - It is not sufficient to save/restore T0 et. al. as these may be declared - with a datatype smaller than the actual register. */ - -#if defined(DECLARE_HOST_REGS) - -#define DO_REG(REG) \ - register host_reg_t reg_AREG##REG asm(AREG##REG); \ - volatile host_reg_t saved_AREG##REG; - -#elif defined(SAVE_HOST_REGS) - -#define DO_REG(REG) \ - __asm__ __volatile__ ("" : "=r" (reg_AREG##REG)); \ - saved_AREG##REG = reg_AREG##REG; - -#else - -#define DO_REG(REG) \ - reg_AREG##REG = saved_AREG##REG; \ - __asm__ __volatile__ ("" : : "r" (reg_AREG##REG)); - -#endif - -#ifdef AREG0 -DO_REG(0) -#endif - -#ifdef AREG1 -DO_REG(1) -#endif - -#ifdef AREG2 -DO_REG(2) -#endif - -#undef SAVE_HOST_REGS -#undef DECLARE_HOST_REGS -#undef DO_REG |