c1e168fdbe
+ Microarchitecture optimizations + 64-bit support + Xilinx FPGA support + LLVM-16 support + Refactoring and quality control fixes minor update minor update minor update minor update minor update minor update cleanup cleanup cache bindings and memory perf refactory minor update minor update hw unit tests fixes minor update minor update minor update minor update minor update minor udpate minor update minor update minor update minor update minor update minor update minor update minor updates minor updates minor update minor update minor update minor update minor update minor update minor updates minor updates minor updates minor updates minor update minor update
125 lines
2.9 KiB
C
125 lines
2.9 KiB
C
// Copyright © 2019-2023
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <sys/stat.h>
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#include <newlib.h>
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#include <unistd.h>
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#include <vx_intrinsics.h>
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#include <vx_print.h>
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#include <string.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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int _close(int file) { return -1; }
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int _fstat(int file, struct stat *st) { return -1; }
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int _isatty(int file) { return 0; }
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int _lseek(int file, int ptr, int dir) { return 0; }
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int _open(const char *name, int flags, int mode) { return -1; }
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int _read(int file, char *ptr, int len) { return -1; }
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caddr_t _sbrk(int incr) {
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__asm__ __volatile__("ebreak");
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return 0;
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}
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int _write(int file, char *ptr, int len) {
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int i;
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for (i = 0; i < len; ++i) {
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vx_putchar(*ptr++);
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}
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return len;
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}
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int _kill(int pid, int sig) { return -1; }
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int _getpid() {
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return vx_hart_id();
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}
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void __init_tls(void) {
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extern char __tdata_start[];
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extern char __tbss_offset[];
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extern char __tdata_size[];
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extern char __tbss_size[];
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// TLS memory initialization
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register char *__thread_self __asm__ ("tp");
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memcpy(__thread_self, __tdata_start, (size_t)__tdata_size);
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memset(__thread_self + (size_t)__tbss_offset, 0, (size_t)__tbss_size);
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}
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#ifdef HAVE_INITFINI_ARRAY
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/* These magic symbols are provided by the linker. */
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extern void (*__preinit_array_start []) (void) __attribute__((weak));
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extern void (*__preinit_array_end []) (void) __attribute__((weak));
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extern void (*__init_array_start []) (void) __attribute__((weak));
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extern void (*__init_array_end []) (void) __attribute__((weak));
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#ifdef HAVE_INIT_FINI
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extern void _init (void);
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#endif
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/* Iterate over all the init routines. */
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void __libc_init_array (void) {
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size_t count;
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size_t i;
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count = __preinit_array_end - __preinit_array_start;
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for (i = 0; i < count; i++)
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__preinit_array_start[i] ();
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#ifdef HAVE_INIT_FINI
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_init ();
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#endif
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count = __init_array_end - __init_array_start;
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for (i = 0; i < count; i++)
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__init_array_start[i] ();
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}
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#endif
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#ifdef HAVE_INITFINI_ARRAY
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extern void (*__fini_array_start []) (void) __attribute__((weak));
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extern void (*__fini_array_end []) (void) __attribute__((weak));
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#ifdef HAVE_INIT_FINI
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extern void _fini (void);
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#endif
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/* Run all the cleanup routines. */
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void __libc_fini_array (void) {
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size_t count;
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size_t i;
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count = __fini_array_end - __fini_array_start;
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for (i = count; i > 0; i--)
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__fini_array_start[i-1] ();
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#ifdef HAVE_INIT_FINI
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_fini ();
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#endif
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}
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#endif
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#ifdef __cplusplus
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}
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#endif
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