139 lines
2.9 KiB
C
139 lines
2.9 KiB
C
#ifndef __RAM_SEGMENTS_C__1POIF5E8U4__
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#define __RAM_SEGMENTS_C__1POIF5E8U4__
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#include <loader/elfloader-otf.h>
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#include <loader/codeprop-otf.h>
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#include <sys/types.h>
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#include <string.h>
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#include <stdio.h>
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struct ram_output
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{
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struct elfloader_output output;
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char *base;
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unsigned int offset;
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void *text;
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void *rodata;
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void *data;
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void *bss;
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};
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static void *
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allocate_segment(struct elfloader_output * const output,
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unsigned int type, int size)
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{
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struct ram_output * const ram = (struct ram_output *)output;
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void *block = malloc(size);
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if (!block) return NULL;
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switch(type) {
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case ELFLOADER_SEG_TEXT:
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if (ram->text) free(ram->text);
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ram->text = block;
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break;
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case ELFLOADER_SEG_RODATA:
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if (ram->rodata) free(ram->rodata);
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ram->rodata = block;
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break;
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case ELFLOADER_SEG_DATA:
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if (ram->data) free(ram->data);
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ram->data = block;
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break;
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case ELFLOADER_SEG_BSS:
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if (ram->bss) free(ram->bss);
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ram->bss = block;
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break;
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default:
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free(block);
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return NULL;
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}
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return block;
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}
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static int
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start_segment(struct elfloader_output *output,
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unsigned int type, void *addr, int size)
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{
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((struct ram_output*)output)->base = addr;
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((struct ram_output*)output)->offset = 0;
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return ELFLOADER_OK;
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}
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static int
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end_segment(struct elfloader_output *output)
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{
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return ELFLOADER_OK;
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}
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static int
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write_segment(struct elfloader_output *output, const char *buf,
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unsigned int len)
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{
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struct ram_output * const ram = (struct ram_output *)output;
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memcpy(ram->base + ram->offset, buf, len);
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ram->offset += len;
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return len;
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}
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static unsigned int
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segment_offset(struct elfloader_output *output)
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{
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return ((struct ram_output*)output)->offset;
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}
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static const struct elfloader_output_ops elf_output_ops =
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{
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allocate_segment,
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start_segment,
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end_segment,
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write_segment,
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segment_offset
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};
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static struct ram_output seg_output = {
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{&elf_output_ops},
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NULL,
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0,
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NULL,
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NULL,
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NULL,
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NULL
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};
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PROCESS(ram_segments_cleanup_process, "RAM segments cleanup process");
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PROCESS_THREAD(ram_segments_cleanup_process, ev, data)
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{
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PROCESS_BEGIN();
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while(1) {
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PROCESS_WAIT_EVENT_UNTIL(ev == PROCESS_EVENT_EXITED
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|| ev == PROCESS_EVENT_EXIT);
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if (ev == PROCESS_EVENT_EXIT) break;
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if (elfloader_autostart_processes ||
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elfloader_autostart_processes[0] == data) {
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PROCESS_PAUSE(); /* Let the process exit */
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if (seg_output.text) {
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free(seg_output.text);
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seg_output.text = NULL;
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}
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if (seg_output.rodata) {
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free(seg_output.rodata);
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seg_output.rodata = NULL;
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}
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if (seg_output.data) {
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free(seg_output.data);
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seg_output.data = NULL;
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}
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if (seg_output.bss) {
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free(seg_output.bss);
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seg_output.bss = NULL;
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}
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elfloader_autostart_processes = NULL;
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}
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}
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PROCESS_END();
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}
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struct elfloader_output *codeprop_output = &seg_output.output;
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#endif /* __RAM_SEGMENTS_C__1POIF5E8U4__ */
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