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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>
91 lines
2.9 KiB
ArmAsm
91 lines
2.9 KiB
ArmAsm
/* Startup code for ARC.
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Copyright (C) 2020-2022 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 <sysdep.h>
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#ifndef ENTRY_POINT
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# error ENTRY_POINT needs to be defined for ARC
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#endif
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/* When we enter this piece of code, the program stack looks like this:
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argc argument counter (integer)
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argv[0] program name (pointer)
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argv[1...N] program args (pointers)
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argv[argc-1] end of args (integer)
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NULL
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env[0...N] environment variables (pointers)
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NULL. */
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ENTRY (ENTRY_POINT)
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/* Needed to make gdb backtraces stop here. */
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.cfi_label .Ldummy
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cfi_undefined (blink)
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mov fp, 0
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ld_s r1, [sp] /* argc. */
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mov_s r5, r0 /* rltd_fini. */
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add_s r2, sp, 4 /* argv. */
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and sp, sp, -8
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mov r6, sp
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/* __libc_start_main (main, argc, argv, init, fini, rtld_fini, stack_end). */
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mov_s r3, 0 /* Used to be init. */
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mov r4, 0 /* Used to be fini. */
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#ifdef SHARED
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ld r0, [pcl, @main@gotpc]
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bl __libc_start_main@plt
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#else
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mov_s r0, main
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bl __libc_start_main
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#endif
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/* Should never get here. */
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flag 1
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END (ENTRY_POINT)
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/* Define a symbol for the first piece of initialized data. */
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.data
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.globl __data_start
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__data_start:
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.long 0
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.weak data_start
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data_start = __data_start
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