qemu/main: Make GC heap size configurable on a per-arch basis.

In certain circumstances depending on the code size, the
`deflate_decompress` test fails on both ARM and RV32 with a memory
allocation failure error.  The issue is mitigated by having a larger GC
heap, in this case around 20 KBytes more than the original 100 KBytes
default.

This commit makes the GC heap size configurable on a per-arch basis, with
both ARM and RV32 using the enlarged 120 KBytes heap.

Signed-off-by: Alessandro Gatti <a.gatti@frob.it>

1 files changed, 5 insertions, 3 deletions

diff --git a/ports/qemu/main.c b/ports/qemu/main.c
index dff55058e..75c6fe4cd 100644
--- a/ports/qemu/main.c
+++ b/ports/qemu/main.c
@@ -34,14 +34,16 @@
 #include "shared/runtime/gchelper.h"
 #include "shared/runtime/pyexec.h"
 
-#define HEAP_SIZE (100 * 1024)
+#if MICROPY_HEAP_SIZE <= 0
+#error MICROPY_HEAP_SIZE must be a positive integer.
+#endif
 
-static uint32_t gc_heap[HEAP_SIZE / sizeof(uint32_t)];
+static uint32_t gc_heap[MICROPY_HEAP_SIZE / sizeof(uint32_t)];
 
 int main(int argc, char **argv) {
     mp_stack_ctrl_init();
     mp_stack_set_limit(10240);
-    gc_init(gc_heap, (char *)gc_heap + HEAP_SIZE);
+    gc_init(gc_heap, (char *)gc_heap + MICROPY_HEAP_SIZE);
 
     for (;;) {
         mp_init();