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06d4381dd8
The start code can get linked into dynamic linked executables where LGPL would require shipping the source or linkable binaries when the executable is distributed. On some targets the license exception was missing in start.S (which is compiled into crt1.o and Scrt1.o which may end up linked into PDE and PIE binaries). I did not review what other code may end up in executables, just fixed the start.S license inconsistency across targets. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
82 lines
2.8 KiB
ArmAsm
82 lines
2.8 KiB
ArmAsm
/* Startup code compliant to the ELF LoongArch ABI.
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Copyright (C) 2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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In addition to the permissions in the GNU Lesser General Public
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License, the Free Software Foundation gives you unlimited
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permission to link the compiled version of this file with other
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programs, and to distribute those programs without any restriction
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coming from the use of this file. (The GNU Lesser General Public
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License restrictions do apply in other respects; for example, they
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cover modification of the file, and distribution when not linked
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into another program.)
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Note that people who make modified versions of this file are not
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obligated to grant this special exception for their modified
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versions; it is their choice whether to do so. The GNU Lesser
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General Public License gives permission to release a modified
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version without this exception; this exception also makes it
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possible to release a modified version which carries forward this
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exception.
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The GNU C Library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#define __ASSEMBLY__ 1
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#include <entry.h>
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#include <sys/asm.h>
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/* The entry point's job is to call __libc_start_main. Per the ABI,
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a0 contains the address of a function to be passed to atexit.
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__libc_start_main wants this in a5. */
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/*
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int
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__libc_start_main (int (*main) (int, char **, char **),
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int argc,
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char **argv,
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__typeof (main) init,
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void (*fini) (void),
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void (*rtld_fini) (void),
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void *stack_end);
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*/
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ENTRY (ENTRY_POINT)
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/* Terminate call stack by noting ra is undefined. Use a dummy
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.cfi_label to force starting the FDE. */
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.cfi_label .Ldummy
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cfi_undefined (1)
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or a5, a0, zero /* rtld_fini */
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/* We must get symbol main through GOT table, since main may not be local.
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For instance: googletest defines main in dynamic library. */
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la.got a0, t0, main
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REG_L a1, sp, 0
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ADDI a2, sp, SZREG
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/* Adjust $sp for 16-aligned */
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BSTRINS sp, zero, 3, 0
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move a3, zero /* used to be init */
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move a4, zero /* used to be fini */
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or a6, sp, zero /* stack_end */
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la.got ra, t0, __libc_start_main
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jirl ra, ra, 0
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la.got ra, t0, abort
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jirl ra, ra, 0
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END (ENTRY_POINT)
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