Merge pull request #455 from Fabien-Chouteau/semihosting

Improve ARM semi-hosting support
stlink-org · Aug 12, 2016 · 28dc5c9 · 28dc5c9
2 parents 1eb3c71 + 3a1ab6e
commit 28dc5c9
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diff --git a/src/gdbserver/gdb-server.c b/src/gdbserver/gdb-server.c
@@ -1321,10 +1321,12 @@ int serve(stlink_t *sl, st_state_t *st) {
                         memcpy(&insn, &sl->q_buf[offset], sizeof(insn));
 
                         if (insn == 0xBEAB && !has_breakpoint(addr)) {
-                            DLOG("Do semihosting...\n");
 
                             do_semihosting (sl, reg.r[0], reg.r[1], &reg.r[0]);
 
+                            /* Write return value */
+                            stlink_write_reg(sl, reg.r[0], 0);
+
                             /* Jump over the break instruction */
                             stlink_write_reg(sl, reg.r[15] + 2, 15);