source: mainline/uspace/lib/libc/arch/ia32/src/stacktrace.S@ b9b105e1

#
# Copyright (c) 2009 Jakub Jermar
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# - Redistributions of source code must retain the above copyright
#   notice, this list of conditions and the following disclaimer.
# - Redistributions in binary form must reproduce the above copyright
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#   documentation and/or other materials provided with the distribution.
# - The name of the author may not be used to endorse or promote products
#   derived from this software without specific prior written permission.
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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.text

.global frame_pointer_get
.global frame_pointer_prev
.global frame_pointer_validate
.global return_address_get

frame_pointer_get:
        movl %ebp, %eax
        ret

frame_pointer_prev:
        movl 4(%esp), %eax
        movl (%eax), %eax
        ret

frame_pointer_validate:
        movl 4(%esp), %eax
        ret

return_address_get:
        movl 4(%esp), %eax
        movl 4(%eax), %eax
        ret