| /* Definitions of ELF target support for Altera Nios II. |
| Copyright (C) 2012-2022 Free Software Foundation, Inc. |
| Contributed by Jonah Graham (jgraham@altera.com), |
| Will Reece (wreece@altera.com), and Jeff DaSilva (jdasilva@altera.com). |
| Contributed by Mentor Graphics, Inc. |
| |
| This file is part of GCC. |
| |
| GCC is free software; you can redistribute it and/or modify it |
| under the terms of the GNU General Public License as published |
| by the Free Software Foundation; either version 3, or (at your |
| option) any later version. |
| |
| GCC is distributed in the hope that it will be useful, but WITHOUT |
| ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public |
| License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GCC; see the file COPYING3. If not see |
| <http://www.gnu.org/licenses/>. */ |
| |
| |
| /* Specs to support the additional command-line options for Nios II ELF |
| toolchains. */ |
| |
| /* -msmallc chooses an alternate C library. |
| -msys-lib= specifies an additional low-level system/hosting library and |
| is typically used to suck in a library provided by a HAL BSP. */ |
| #undef LIB_SPEC |
| #define LIB_SPEC \ |
| "--start-group %{msmallc: -lsmallc} %{!msmallc: -lc} -lgcc \ |
| %{msys-lib=*: -l%*} \ |
| --end-group \ |
| " |
| |
| /* Linking with -mhal suppresses inclusion of the GCC-provided crt* begin/end |
| code. Normally in this case you also link with -msys-crt0= to specify |
| the startup code provided by the HAL BSP instead. */ |
| #undef STARTFILE_SPEC |
| #define STARTFILE_SPEC \ |
| "%{mhal:" \ |
| "%{msys-crt0=*:%*} %{!msys-crt0=*:crt0%O%s} " \ |
| "%{msys-crt0=:%eYou need a C startup file for -msys-crt0=};" \ |
| ":crti%O%s crtbegin%O%s}" |
| |
| #undef ENDFILE_SPEC |
| #define ENDFILE_SPEC "%{!mhal:crtend%O%s crtn%O%s}" |
| |
| /* The ELF target doesn't support the Nios II Linux ABI. */ |
| #define TARGET_LINUX_ABI 0 |
| |
| /* Default -fdelete-null-pointer-checks to off, to prevent the compiler |
| from treating accesses to address zero as traps. On bare-metal Nios II |
| targets address zero may legitimately be mapped to memory (e.g., the |
| hardware description may specify this as the address of the interrupt |
| vector). Users can override this on the command line to get the |
| additional optimizations it enables. */ |
| #define SUBTARGET_OVERRIDE_OPTIONS \ |
| if (flag_delete_null_pointer_checks < 0) \ |
| flag_delete_null_pointer_checks = 0 |