399486e8fb
Instead of adding regparm(0) to each assembler function called by coreboot, add an asmlinkage macro (like the Linux kernel does) that can be different per architecture (and that is empty on ARM right now) Change-Id: I7ad10c463f6c552f1201f77ae24ed354ac48e2d9 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/1973 Reviewed-by: David Hendricks <dhendrix@chromium.org> Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
40 lines
1.5 KiB
C
40 lines
1.5 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2009 coresystems GmbH
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*
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* This program 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; version 2 of the License.
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*
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* This program 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 this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
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*/
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#include <arch/cpu.h>
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/* GCC's libgcc handling is quite broken. While the libgcc functions
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* are always regparm(0) the code that calls them uses whatever the
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* compiler call specifies. Therefore we need a wrapper around those
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* functions. See gcc bug PR41055 for more information.
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*/
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/* TODO: maybe this code should move to arch/x86 as architecture
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* specific implementations may vary
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*/
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#define WRAP_LIBGCC_CALL(type, name) \
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type __real_##name(type a, type b) asmlinkage; \
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type __wrap_##name(type a, type b); \
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type __wrap_##name(type a, type b) { return __real_##name(a, b); }
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WRAP_LIBGCC_CALL(long long, __divdi3)
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WRAP_LIBGCC_CALL(unsigned long long, __udivdi3)
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WRAP_LIBGCC_CALL(long long, __moddi3)
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WRAP_LIBGCC_CALL(unsigned long long, __umoddi3)
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