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193 | /* GATE PROJECT LICENSE:
+----------------------------------------------------------------------------+
| Copyright (c) 2018-2026, Stefan Meislinger <sm@opengate.at> |
| All rights reserved. |
| |
| Redistribution and use in source and binary forms, with or without |
| modification, are permitted provided that the following conditions are met:|
| |
| 1. Redistributions of source code must retain the above copyright notice, |
| this list of conditions and the following disclaimer. |
| 2. Redistributions in binary form must reproduce the above copyright |
| notice, this list of conditions and the following disclaimer in the |
| documentation and/or other materials provided with the distribution. |
| |
| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"|
| AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| ARE DISCLAIMED.IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| THE POSSIBILITY OF SUCH DAMAGE. |
+----------------------------------------------------------------------------+
*/
#include "gate/platforms.h"
#include "gate/results.h"
#if defined(GATE_SYS_WASM)
#include "gate/platform/wasm/wasm_gate.h"
gate_result_t gate_platform_init(void)
{
return gate_wasm_main_init();
}
void gate_platform_exit(int exit_code)
{
gate_wasm_exit(exit_code);
}
void gate_platform_atexit(void(*func)(void))
{
/* TODO */
}
gate_result_t gate_platform_lock()
{
return gate_wasm_global_lock();
}
gate_result_t gate_platform_unlock()
{
return gate_wasm_global_unlock();
}
gate_int32_t gate_platform_get_last_error()
{
return gate_wasm_get_last_error();
}
gate_result_t gate_platform_set_last_error(gate_int32_t platform_error_code)
{
return gate_wasm_set_last_error(platform_error_code);
}
gate_result_t gate_platform_print_error(gate_int32_t platform_error_code, char* buffer, gate_size_t buffer_len)
{
return gate_wasm_print_error(platform_error_code, buffer, buffer_len);
}
gate_bool_t gate_platform_stream_valid(gate_platform_stream_t strm)
{
gate_intptr_t fd = (gate_intptr_t)strm;
return (fd >= 0);
}
void gate_platform_stream_set_invalid(gate_platform_stream_t* ptr_strm)
{
*ptr_strm = (gate_platform_stream_t)(gate_intptr_t)-1;
}
gate_result_t gate_platform_stream_open(char const* path, int open_flags, int native_flags, gate_platform_stream_t* strm)
{
int fd = gate_wasm_open(path, open_flags);
if (fd < 0)
{
return GATE_RESULT_FAILED;
}
else
{
*strm = (gate_platform_stream_t)(gate_intptr_t)fd;
return GATE_RESULT_OK;
}
}
gate_result_t gate_platform_stream_read(gate_platform_stream_t strm, char* buffer, gate_size_t bufferlength, gate_size_t* returned)
{
int fd = (int)(gate_intptr_t)strm;
gate_intptr_t result = gate_wasm_read(fd, buffer, bufferlength);
if (result < 0)
{
return GATE_RESULT_FAILED;
}
else
{
if (returned)
{
*returned = result;
}
return GATE_RESULT_OK;
}
}
gate_result_t gate_platform_stream_write(gate_platform_stream_t strm, char const* buffer, gate_size_t bufferlength, gate_size_t* written)
{
int fd = (int)(gate_intptr_t)strm;
gate_intptr_t result = gate_wasm_write(fd, buffer, bufferlength);
if (result < 0)
{
return GATE_RESULT_FAILED;
}
else
{
if (written)
{
*written = result;
}
return GATE_RESULT_OK;
}
}
gate_result_t gate_platform_stream_seek(gate_platform_stream_t strm, gate_int64_t position, int origin, gate_int64_t* final_position)
{
int fd = (int)(gate_intptr_t)strm;
return gate_wasm_seek(fd, position, origin, final_position);
}
gate_result_t gate_platform_stream_close(gate_platform_stream_t* strm)
{
gate_result_t ret = GATE_RESULT_OK;
if (strm != NULL)
{
int fd = (int)(gate_intptr_t)*strm;<--- Assigning a pointer to an integer is not portable. [+]Assigning a pointer to an integer (int/long/etc) is not portable across different platforms and compilers. For example in 32-bit Windows and linux they are same width, but in 64-bit Windows and linux they are of different width. In worst case you end up assigning 64-bit address to 32-bit integer. The safe way is to store addresses only in pointer types (or typedefs like uintptr_t).
ret = gate_wasm_close(fd);
}
return ret;
}
gate_result_t gate_platform_set_signal_handler(int sig,
gate_platform_signal_handler_t new_handler,
gate_platform_signal_handler_t* ptr_old_handler)
{
return GATE_RESULT_NOTSUPPORTED;
}
gate_result_t gate_platform_raise_signal(int sig)
{
return GATE_RESULT_NOTSUPPORTED;
}
int gate_platform_convert_gate_signal(int gate_platform_signal)
{
return 0;
}
int gate_platform_convert_native_signal(int native_signal)
{
return 0;
}
gate_result_t gate_platform_semaphore_create(gate_platform_semaphore_t* ptr_sem, unsigned int count)
{
gate_uint32_t volatile* s = (gate_uint32_t volatile*)ptr_sem;
return gate_wasm_sem_create(s, count);
}
gate_result_t gate_platform_semaphore_acquire(gate_platform_semaphore_t* ptr_sem, gate_uint32_t const* ptr_timeout_ms)
{
gate_uint32_t volatile* s = (gate_uint32_t volatile*)ptr_sem;
return gate_wasm_sem_acquire(s, ptr_timeout_ms);
}
gate_result_t gate_platform_semaphore_release(gate_platform_semaphore_t* ptr_sem)
{
gate_uint32_t volatile* s = (gate_uint32_t volatile*)ptr_sem;
return gate_wasm_sem_release(s);
}
gate_result_t gate_platform_semaphore_destroy(gate_platform_semaphore_t* ptr_sem)
{
gate_uint32_t volatile* s = (gate_uint32_t volatile*)ptr_sem;
return gate_wasm_sem_destroy(s);
}
gate_bool_t gate_platform_yield()
{
/* TODO */
return false;
}
#endif /* GATE_SYS_WASM */
|