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84 lines
2.0 KiB
C
84 lines
2.0 KiB
C
/*
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This file is part of Fennix C Library.
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Fennix C Library is free software: you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation, either version 3 of
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the License, or (at your option) any later version.
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Fennix 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Fennix C Library. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <stddef.h>
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#include <stdarg.h>
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#include <bits/libc.h>
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#include <sys/mman.h>
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#include "elf.h"
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#include "misc.h"
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#define NANOPRINTF_IMPLEMENTATION 1
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#include "nanoprintf.h"
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char *print_buffer;
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size_t print_buffer_size;
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size_t print_buffer_offset;
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void flush_buffer()
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{
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if (print_buffer_offset > 0)
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{
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sysdep(Write)(1, print_buffer, print_buffer_offset);
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print_buffer_offset = 0;
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}
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}
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void print_wrapper(int c, void *)
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{
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if (print_buffer_offset >= print_buffer_size - 1)
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flush_buffer();
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print_buffer[print_buffer_offset++] = (char)c;
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}
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void __init_print_buffer()
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{
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print_buffer = (char *)sysdep(MemoryMap)(0,
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0x1000,
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PROT_READ | PROT_WRITE,
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MAP_PRIVATE | MAP_ANONYMOUS,
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-1, 0);
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print_buffer_size = 0x1000;
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print_buffer_offset = 0;
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}
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void __fini_print_buffer()
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{
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flush_buffer();
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if (print_buffer != NULL)
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sysdep(MemoryUnmap)(print_buffer, 0x1000);
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print_buffer = NULL;
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}
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int printf(const char *format, ...)
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{
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va_list args;
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va_start(args, format);
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int ret = npf_vpprintf(print_wrapper, NULL, format, args);
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va_end(args);
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return ret;
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}
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int puts(const char *s)
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{
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int len = strlen(s);
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memcpy(print_buffer + print_buffer_offset, s, len);
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print_buffer_offset += len;
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print_buffer[print_buffer_offset++] = '\n';
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flush_buffer();
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return len + 1;
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}
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