b84d7d8f1e
De-hardcode range in RAM we search for the API signature. Instead use the stack pointer as a hint to narrow down the range in which the signature could reside (it is malloc'ed on the U-Boot heap, and is hoped to remain in some proximity from stack area). Adjust PowerPC code in API demo to the new scheme. Signed-off-by: Rafal Czubak <rcz@semihalf.com> Signed-off-by: Rafal Jaworowski <raj@semihalf.com>
57 lines
1.3 KiB
ArmAsm
57 lines
1.3 KiB
ArmAsm
/*
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* (C) Copyright 2007 Semihalf
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*
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* Written by: Rafal Jaworowski <raj@semihalf.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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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., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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*/
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#if defined(CONFIG_PPC)
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.text
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.globl _start
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_start:
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lis %r11, search_hint@ha
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addi %r11, %r11, search_hint@l
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stw %r1, 0(%r11)
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b main
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.globl syscall
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syscall:
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lis %r11, syscall_ptr@ha
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addi %r11, %r11, syscall_ptr@l
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lwz %r11, 0(%r11)
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mtctr %r11
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bctr
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#else
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#error No support for this arch!
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#endif
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.globl syscall_ptr
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syscall_ptr:
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.align 4
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.long 0
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.globl search_hint
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search_hint:
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.long 0
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