0d57cd61d9
Move test infra to header file
check functions (always print line number on error)
USR manipulation
Useful floating point values
Use stdint.h types
Use stdbool.h bool where appropriate
Use trip counts local to for loop
Suggested-by: Anton Johansson <anjo@rev.ng>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Anton Johansson <anjo@rev.ng>
Tested-by: Anton Johansson <anjo@rev.ng>
Message-Id: <20230522174341.1805460-1-tsimpson@quicinc.com>
133 lines
4 KiB
C
133 lines
4 KiB
C
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/*
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* Copyright(c) 2022-2023 Qualcomm Innovation Center, Inc. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <stdint.h>
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static int err;
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#include "hex_test.h"
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#define WRITE_REG_NOCLOBBER(output, reg_name, input) \
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asm volatile(reg_name " = %1\n\t" \
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"%0 = " reg_name "\n\t" \
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: "=r"(output) \
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: "r"(input) \
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: );
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#define WRITE_REG_ENCODED(output, reg_name, input, encoding) \
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asm volatile("r0 = %1\n\t" \
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encoding "\n\t" \
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"%0 = " reg_name "\n\t" \
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: "=r"(output) \
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: "r"(input) \
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: "r0");
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#define WRITE_REG_PAIR_ENCODED(output, reg_name, input, encoding) \
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asm volatile("r1:0 = %1\n\t" \
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encoding "\n\t" \
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"%0 = " reg_name "\n\t" \
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: "=r"(output) \
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: "r"(input) \
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: "r1:0");
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/*
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* Instruction word: { pc = r0 }
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*
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* This instruction is barred by the assembler.
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*
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* 3 2 1
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* 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Opc[A2_tfrrcr] | Src[R0] |P P| | C9/PC |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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#define PC_EQ_R0 ".word 0x6220c009"
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#define C9_8_EQ_R1_0 ".word 0x6320c008"
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static inline void write_control_registers(void)
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{
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uint32_t result = 0;
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WRITE_REG_NOCLOBBER(result, "usr", 0xffffffff);
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check32(result, 0x3ecfff3f);
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WRITE_REG_NOCLOBBER(result, "gp", 0xffffffff);
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check32(result, 0xffffffc0);
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WRITE_REG_NOCLOBBER(result, "upcyclelo", 0xffffffff);
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check32(result, 0x00000000);
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WRITE_REG_NOCLOBBER(result, "upcyclehi", 0xffffffff);
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check32(result, 0x00000000);
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WRITE_REG_NOCLOBBER(result, "utimerlo", 0xffffffff);
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check32(result, 0x00000000);
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WRITE_REG_NOCLOBBER(result, "utimerhi", 0xffffffff);
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check32(result, 0x00000000);
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/*
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* PC is special. Setting it to these values
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* should cause a catastrophic failure.
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*/
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WRITE_REG_ENCODED(result, "pc", 0x00000000, PC_EQ_R0);
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check32_ne(result, 0x00000000);
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WRITE_REG_ENCODED(result, "pc", 0x00000001, PC_EQ_R0);
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check32_ne(result, 0x00000001);
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WRITE_REG_ENCODED(result, "pc", 0xffffffff, PC_EQ_R0);
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check32_ne(result, 0xffffffff);
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}
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static inline void write_control_register_pairs(void)
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{
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uint64_t result = 0;
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WRITE_REG_NOCLOBBER(result, "c11:10", 0xffffffffffffffff);
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check64(result, 0xffffffc0ffffffff);
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WRITE_REG_NOCLOBBER(result, "c15:14", 0xffffffffffffffff);
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check64(result, 0x0000000000000000);
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WRITE_REG_NOCLOBBER(result, "c31:30", 0xffffffffffffffff);
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check64(result, 0x0000000000000000);
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WRITE_REG_PAIR_ENCODED(result, "c9:8", (uint64_t) 0x0000000000000000,
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C9_8_EQ_R1_0);
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check64_ne(result, 0x000000000000000);
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WRITE_REG_PAIR_ENCODED(result, "c9:8", 0x0000000100000000, C9_8_EQ_R1_0);
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check64_ne(result, 0x0000000100000000);
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WRITE_REG_PAIR_ENCODED(result, "c9:8", 0xffffffffffffffff, C9_8_EQ_R1_0);
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check64_ne(result, 0xffffffffffffffff);
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}
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int main()
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{
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err = 0;
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write_control_registers();
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write_control_register_pairs();
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puts(err ? "FAIL" : "PASS");
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return err;
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}
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