py/asmxtensa: Make the generated code dumper work on mpy-cross.

This commit fixes compilation errors occurring when enabling the Xtensa
code dumper inside mpy-cross.

The original code was meant to dump the code from an Xtensa device
itself, but for debugging the inline assembler this functionality was
also needed off-line.  The changes involve solving a signed/unsigned
mismatch that was not much of a problem for the 8266's gcc version but
made modern compilers complain, and using the printf formatter for
pointers when it comes to printing code addresses.

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

1 files changed, 2 insertions, 2 deletions

diff --git a/py/asmxtensa.c b/py/asmxtensa.c
index 41bfcb54e..11b61ad94 100644
--- a/py/asmxtensa.c
+++ b/py/asmxtensa.c
@@ -49,9 +49,9 @@ void asm_xtensa_end_pass(asm_xtensa_t *as) {
     if (as->base.pass == MP_ASM_PASS_EMIT) {
         uint8_t *d = as->base.code_base;
         printf("XTENSA ASM:");
-        for (int i = 0; i < ((as->base.code_size + 15) & ~15); ++i) {
+        for (size_t i = 0; i < ((as->base.code_size + 15) & ~15); ++i) {
             if (i % 16 == 0) {
-                printf("\n%08x:", (uint32_t)&d[i]);
+                printf("\n%p:", &d[i]);
             }
             if (i % 2 == 0) {
                 printf(" ");