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- /*
- * Copyright (C) 2013 Synopsys, Inc. (www.synopsys.com)
- *
- * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
- */
- #include <asm.h>
- #include <sysdep.h>
- #include <sys/syscall.h>
- ; Save the registers which resolver could possibly clobber
- ; r0-r9: args to the function - symbol being resolved
- ; r10-r12 are already clobbered by PLTn, PLT0 thus neednot be saved
- .macro SAVE_CALLER_SAVED
- PUSHR_S r0
- PUSHR_S r1
- PUSHR_S r2
- PUSHR_S r3
- PUSHR r4
- PUSHR r5
- PUSHR r6
- PUSHR r7
- PUSHR r8
- PUSHR r9
- PUSHR_S blink
- .endm
- .macro RESTORE_CALLER_SAVED_BUT_R0
- POPR blink
- POPR r9
- POPR r8
- POPR r7
- POPR r6
- POPR r5
- POPR r4
- POPR_S r3
- POPR_S r2
- POPR_S r1
- .endm
- ; Upon entry, PLTn, which led us here, sets up the following regs
- ; r11 = Module info (tpnt pointer as expected by resolver)
- ; r12 = PC of the PLTn itself - needed by resolver to find
- ; corresponding .rela.plt entry
- ENTRY(_dl_linux_resolve)
- ; args to func being resolved, which resolver might clobber
- SAVE_CALLER_SAVED
- mov_s r1, r12
- bl.d _dl_linux_resolver
- mov r0, r11
- RESTORE_CALLER_SAVED_BUT_R0
- j_s.d [r0] ; r0 has resolved function addr
- POPR_S r0 ; restore first arg to resolved call
- END(_dl_linux_resolve)
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