| 1 | /* |
| 2 | * Regression tests for valid packets that qemu incorrectly rejected as |
| 3 | * invalid. |
| 4 | * |
| 5 | * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries. |
| 6 | * SPDX-License-Identifier: GPL-2.0-or-later |
| 7 | */ |
| 8 | |
| 9 | #include <stdio.h> |
| 10 | #include <stdint.h> |
| 11 | |
| 12 | int err; |
| 13 | |
| 14 | #include "hex_test.h" |
| 15 | |
| 16 | /* volatile to keep the load from being optimized away */ |
| 17 | static volatile int buf[2] = { 0x1234, 0 }; |
| 18 | |
| 19 | /* Load and register transfer in one packet, load encoded first. */ |
| 20 | static int32_t load_imm_pair(void) |
| 21 | { |
| 22 | int32_t out; |
| 23 | /* { r6 = memw(r3+#-4); r7 = #0x4ae6 } */ |
| 24 | asm volatile( |
| 25 | "{ r3 = %1 }\n\t" |
| 26 | ".word 0x97837fe6\n\t" |
| 27 | ".word 0x7845dcc7\n\t" |
| 28 | "{ %0 = r6 }\n\t" |
| 29 | : "=r"(out) : "r"(&buf[1]) : "r3", "r6", "r7"); |
| 30 | return out; |
| 31 | } |
| 32 | |
| 33 | static int32_t dcbuf[8] __attribute__((aligned(32))); |
| 34 | |
| 35 | /* Slot-0-only op (dczeroa) packed last with three transfers. */ |
| 36 | static void slot0_restricted(int32_t *out) |
| 37 | { |
| 38 | asm volatile( |
| 39 | "{ %0 = #0x11\n\t" |
| 40 | " %1 = #0x22\n\t" |
| 41 | " %2 = #0x33\n\t" |
| 42 | " dczeroa(%3) }\n\t" |
| 43 | : "=r"(out[0]), "=r"(out[1]), "=r"(out[2]) |
| 44 | : "r"(dcbuf) : "memory"); |
| 45 | } |
| 46 | |
| 47 | int main() |
| 48 | { |
| 49 | int32_t r[3]; |
| 50 | |
| 51 | check32(load_imm_pair(), 0x1234); |
| 52 | |
| 53 | dcbuf[0] = 0x5a5a5a5a; |
| 54 | slot0_restricted(r); |
| 55 | check32(r[0], 0x11); |
| 56 | check32(r[1], 0x22); |
| 57 | check32(r[2], 0x33); |
| 58 | check32(dcbuf[0], 0); /* dczeroa cleared the line */ |
| 59 | |
| 60 | puts(err ? "FAIL" : "PASS"); |
| 61 | return err; |
| 62 | } |