Commit 060ebfef authored Aug 03, 2015 by Leon Alrae

target-mips: fix semihosting for microMIPS R6

In semihosting mode the SDBBP 1 instructions should trigger UHI syscall,
but in QEMU this does not happen for recently added microMIPS R6.
Consequently bare metal microMIPS R6 programs supporting UHI will not run.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>

parent e95edefb

target-mips/translate.c

+7 −3

Original line number	Diff line number	Diff line
		@@ -13278,11 +13278,15 @@ static void gen_pool16c_r6_insn(DisasContext *ctx)
		break;
		case R6_SDBBP16:
		/* SDBBP16 */
		if (is_uhi(extract32(ctx->opcode, 6, 4))) {
		gen_helper_do_semihosting(cpu_env);
		} else {
		if (ctx->hflags & MIPS_HFLAG_SBRI) {
		generate_exception(ctx, EXCP_RI);
		} else {
		generate_exception(ctx, EXCP_DBp);
		}
		}
		break;
		}
		break;