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Move HEAP_END and RAM_END to linker script 

* Issue #232
This commit is contained in:
mux 2014-01-29 12:51:38 +02:00
parent 217814cc63
commit 76a6335b6e
4 changed files with 9 additions and 7 deletions
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6
stm/gccollect.c
View File

@ -13,10 +13,10 @@ void gc_helper_get_regs_and_clean_stack(machine_uint_t *regs, machine_uint_t hea
void gc_collect(void) {
uint32_t start = sys_tick_counter;
gc_collect_start();
gc_collect_root((void**)&_ram_start, ((uint32_t)&_heap_start - (uint32_t)&_ram_start) / 4);
gc_collect_root((void**)&_ram_start, (&_heap_start - &_ram_start) / 4);
machine_uint_t regs[10];
gc_helper_get_regs_and_clean_stack(regs, HEAP_END);
gc_collect_root((void**)HEAP_END, (RAM_END - HEAP_END) / 4); // will trace regs since they now live in this function on the stack
gc_helper_get_regs_and_clean_stack(regs, (machine_uint_t)&_heap_end);
gc_collect_root((void**)&_heap_end, (&_ram_end - &_heap_end) / 4); // will trace regs since they now live in this function on the stack
gc_collect_end();
uint32_t ticks = sys_tick_counter - start; // TODO implement a function that does this properly

5
stm/gccollect.h
View File

@ -1,8 +1,7 @@
#define HEAP_END (0x2001c000) // tunable
#define RAM_END (0x20020000) // fixed for chip
extern uint32_t _ram_start;
extern uint32_t _heap_start;
extern uint32_t _ram_end;
extern uint32_t _heap_end;
void gc_collect(void);

2
stm/main.c
View File

@ -594,7 +594,7 @@ int main(void) {
soft_reset:
// GC init
gc_init(&_heap_start, (void*)HEAP_END);
gc_init(&_heap_start, &_heap_end);
// Micro Python init
qstr_init();

3
stm/stm32f405.ld
View File

@ -19,6 +19,9 @@ _minimum_heap_size = 16K;
/* top end of the stack */
_estack = ORIGIN(RAM) + LENGTH(RAM);
_ram_end = 0x20020000;
_heap_end = 0x2001c000;
/* define output sections */
SECTIONS
{