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changed R_AVR_CALL relocation (but unsure why the old didn't work)

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+ defined debug output
This commit is contained in:
fros4943 2007-11-16 09:16:31 +00:00
parent c989d425dc
commit 12338bee6d
1 changed files with 28 additions and 8 deletions
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30
core/loader/elfloader-avr.c
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@ -28,7 +28,7 @@
*
* This file is part of the Contiki operating system.
*
* @(#)$Id: elfloader-avr.c,v 1.4 2006/12/22 17:10:54 barner Exp $
* @(#)$Id: elfloader-avr.c,v 1.5 2007/11/16 09:16:31 fros4943 Exp $
*/
#include <stdio.h>
@ -61,12 +61,26 @@
#define ELF32_R_TYPE(info) ((unsigned char)(info))
#define DEBUG 0
#if DEBUG
/*#define PRINTF(...) rs232_print_p(RS232_PORT_1, __VA_ARGS__)*/
#define PRINTF(...) printf(__VA_ARGS__)
#else
#define PRINTF(...)
#endif
static struct mmem module_heap;
/*---------------------------------------------------------------------------*/
void*
elfloader_arch_allocate_ram(int size)
{
/* Allocate RAM for module (TODO: we leak the memory) */
/* Free previously allocated memory */
/* TODO Assumes memory address 0 can't be allocated, use flag instead? */
if (MMEM_PTR(&module_heap) != 0) {
mmem_free(&module_heap);
}
/* Allocate RAM for module */
if (mmem_alloc (&module_heap, size) == 0) {
return NULL;
}
@ -166,8 +180,8 @@ elfloader_arch_relocate(int fd, unsigned int sectionoffset,
switch(type) {
case R_AVR_NONE:
case R_AVR_32:
rs232_print_p (RS232_PORT_1, PSTR ("elfloader-avr.c: unsupported relocation type: "));
rs232_printf (RS232_PORT_1, "%d\n", type);
PRINTF(PSTR ("elfloader-avr.c: unsupported relocation type: "));
PRINTF("%d\n", type);
break;
case R_AVR_7_PCREL: { /* 4 */
@ -257,14 +271,20 @@ elfloader_arch_relocate(int fd, unsigned int sectionoffset,
break;
case R_AVR_CALL: /* 18 */
/* old solution:
addr = ((int16_t)addr >> 1);
instr[2] = (int16_t)addr & 0xff;
instr[3] = (int16_t)addr >> 8;
*/
/* new solution */
instr[2] = (u8_t) ((int16_t)addr) & 0xff;
instr[3] = ((int16_t)addr) >> 8;
cfs_write(fd, instr, 4);
break;
default:
rs232_print_p (RS232_PORT_1, PSTR ("Unknown reloation type!\n"));
PRINTF(PSTR ("Unknown relocation type!\n"));
break;
}
}