58ff298166
Versions V3 and earlier should treat the "K_const" and "length" values as unsigned. Modified circ_test_v3() in tests/tcg/hexagon/circ.c to reproduce the bug Signed-off-by: Michael Lambert <mlambert@quicinc.com> Signed-off-by: Taylor Simpson <tsimpson@quicinc.com> Message-Id: <20220210021556.9217-2-tsimpson@quicinc.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
488 lines
16 KiB
C
488 lines
16 KiB
C
/*
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* Copyright(c) 2019-2022 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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#define DEBUG 0
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#define DEBUG_PRINTF(...) \
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do { \
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if (DEBUG) { \
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printf(__VA_ARGS__); \
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} \
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} while (0)
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#define NBYTES (1 << 8)
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#define NHALFS (NBYTES / sizeof(short))
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#define NWORDS (NBYTES / sizeof(int))
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#define NDOBLS (NBYTES / sizeof(long long))
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long long dbuf[NDOBLS] __attribute__((aligned(1 << 12))) = {0};
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int wbuf[NWORDS] __attribute__((aligned(1 << 12))) = {0};
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short hbuf[NHALFS] __attribute__((aligned(1 << 12))) = {0};
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unsigned char bbuf[NBYTES] __attribute__((aligned(1 << 12))) = {0};
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/*
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* We use the C preporcessor to deal with the combinations of types
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*/
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#define INIT(BUF, N) \
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void init_##BUF(void) \
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{ \
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int i; \
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for (i = 0; i < N; i++) { \
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BUF[i] = i; \
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} \
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} \
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INIT(bbuf, NBYTES)
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INIT(hbuf, NHALFS)
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INIT(wbuf, NWORDS)
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INIT(dbuf, NDOBLS)
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/*
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* Macros for performing circular load
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* RES result
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* ADDR address
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* START start address of buffer
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* LEN length of buffer (in bytes)
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* INC address increment (in bytes for IMM, elements for REG)
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*/
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#define CIRC_LOAD_IMM(SIZE, RES, ADDR, START, LEN, INC) \
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__asm__( \
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"r4 = %3\n\t" \
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"m0 = r4\n\t" \
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"cs0 = %2\n\t" \
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"%0 = mem" #SIZE "(%1++#" #INC ":circ(M0))\n\t" \
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: "=r"(RES), "+r"(ADDR) \
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: "r"(START), "r"(LEN) \
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: "r4", "m0", "cs0")
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#define CIRC_LOAD_IMM_b(RES, ADDR, START, LEN, INC) \
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CIRC_LOAD_IMM(b, RES, ADDR, START, LEN, INC)
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#define CIRC_LOAD_IMM_ub(RES, ADDR, START, LEN, INC) \
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CIRC_LOAD_IMM(ub, RES, ADDR, START, LEN, INC)
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#define CIRC_LOAD_IMM_h(RES, ADDR, START, LEN, INC) \
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CIRC_LOAD_IMM(h, RES, ADDR, START, LEN, INC)
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#define CIRC_LOAD_IMM_uh(RES, ADDR, START, LEN, INC) \
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CIRC_LOAD_IMM(uh, RES, ADDR, START, LEN, INC)
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#define CIRC_LOAD_IMM_w(RES, ADDR, START, LEN, INC) \
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CIRC_LOAD_IMM(w, RES, ADDR, START, LEN, INC)
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#define CIRC_LOAD_IMM_d(RES, ADDR, START, LEN, INC) \
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CIRC_LOAD_IMM(d, RES, ADDR, START, LEN, INC)
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/*
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* The mreg has the following pieces
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* mreg[31:28] increment[10:7]
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* mreg[27:24] K value (used Hexagon v3 and earlier)
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* mreg[23:17] increment[6:0]
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* mreg[16:0] circular buffer length
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*/
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static int build_mreg(int inc, int K, int len)
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{
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return ((inc & 0x780) << 21) |
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((K & 0xf) << 24) |
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((inc & 0x7f) << 17) |
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(len & 0x1ffff);
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}
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#define CIRC_LOAD_REG(SIZE, RES, ADDR, START, LEN, INC) \
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__asm__( \
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"r4 = %2\n\t" \
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"m1 = r4\n\t" \
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"cs1 = %3\n\t" \
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"%0 = mem" #SIZE "(%1++I:circ(M1))\n\t" \
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: "=r"(RES), "+r"(ADDR) \
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: "r"(build_mreg((INC), 0, (LEN))), \
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"r"(START) \
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: "r4", "m1", "cs1")
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#define CIRC_LOAD_REG_b(RES, ADDR, START, LEN, INC) \
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CIRC_LOAD_REG(b, RES, ADDR, START, LEN, INC)
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#define CIRC_LOAD_REG_ub(RES, ADDR, START, LEN, INC) \
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CIRC_LOAD_REG(ub, RES, ADDR, START, LEN, INC)
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#define CIRC_LOAD_REG_h(RES, ADDR, START, LEN, INC) \
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CIRC_LOAD_REG(h, RES, ADDR, START, LEN, INC)
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#define CIRC_LOAD_REG_uh(RES, ADDR, START, LEN, INC) \
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CIRC_LOAD_REG(uh, RES, ADDR, START, LEN, INC)
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#define CIRC_LOAD_REG_w(RES, ADDR, START, LEN, INC) \
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CIRC_LOAD_REG(w, RES, ADDR, START, LEN, INC)
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#define CIRC_LOAD_REG_d(RES, ADDR, START, LEN, INC) \
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CIRC_LOAD_REG(d, RES, ADDR, START, LEN, INC)
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/*
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* Macros for performing circular store
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* VAL value to store
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* ADDR address
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* START start address of buffer
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* LEN length of buffer (in bytes)
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* INC address increment (in bytes for IMM, elements for REG)
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*/
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#define CIRC_STORE_IMM(SIZE, PART, VAL, ADDR, START, LEN, INC) \
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__asm__( \
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"r4 = %3\n\t" \
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"m0 = r4\n\t" \
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"cs0 = %1\n\t" \
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"mem" #SIZE "(%0++#" #INC ":circ(M0)) = %2" PART "\n\t" \
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: "+r"(ADDR) \
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: "r"(START), "r"(VAL), "r"(LEN) \
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: "r4", "m0", "cs0", "memory")
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#define CIRC_STORE_IMM_b(VAL, ADDR, START, LEN, INC) \
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CIRC_STORE_IMM(b, "", VAL, ADDR, START, LEN, INC)
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#define CIRC_STORE_IMM_h(VAL, ADDR, START, LEN, INC) \
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CIRC_STORE_IMM(h, "", VAL, ADDR, START, LEN, INC)
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#define CIRC_STORE_IMM_f(VAL, ADDR, START, LEN, INC) \
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CIRC_STORE_IMM(h, ".H", VAL, ADDR, START, LEN, INC)
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#define CIRC_STORE_IMM_w(VAL, ADDR, START, LEN, INC) \
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CIRC_STORE_IMM(w, "", VAL, ADDR, START, LEN, INC)
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#define CIRC_STORE_IMM_d(VAL, ADDR, START, LEN, INC) \
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CIRC_STORE_IMM(d, "", VAL, ADDR, START, LEN, INC)
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#define CIRC_STORE_NEW_IMM(SIZE, VAL, ADDR, START, LEN, INC) \
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__asm__( \
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"r4 = %3\n\t" \
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"m0 = r4\n\t" \
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"cs0 = %1\n\t" \
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"{\n\t" \
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" r5 = %2\n\t" \
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" mem" #SIZE "(%0++#" #INC ":circ(M0)) = r5.new\n\t" \
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"}\n\t" \
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: "+r"(ADDR) \
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: "r"(START), "r"(VAL), "r"(LEN) \
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: "r4", "r5", "m0", "cs0", "memory")
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#define CIRC_STORE_IMM_bnew(VAL, ADDR, START, LEN, INC) \
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CIRC_STORE_NEW_IMM(b, VAL, ADDR, START, LEN, INC)
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#define CIRC_STORE_IMM_hnew(VAL, ADDR, START, LEN, INC) \
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CIRC_STORE_NEW_IMM(h, VAL, ADDR, START, LEN, INC)
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#define CIRC_STORE_IMM_wnew(VAL, ADDR, START, LEN, INC) \
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CIRC_STORE_NEW_IMM(w, VAL, ADDR, START, LEN, INC)
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#define CIRC_STORE_REG(SIZE, PART, VAL, ADDR, START, LEN, INC) \
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__asm__( \
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"r4 = %1\n\t" \
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"m1 = r4\n\t" \
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"cs1 = %2\n\t" \
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"mem" #SIZE "(%0++I:circ(M1)) = %3" PART "\n\t" \
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: "+r"(ADDR) \
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: "r"(build_mreg((INC), 0, (LEN))), \
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"r"(START), \
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"r"(VAL) \
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: "r4", "m1", "cs1", "memory")
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#define CIRC_STORE_REG_b(VAL, ADDR, START, LEN, INC) \
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CIRC_STORE_REG(b, "", VAL, ADDR, START, LEN, INC)
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#define CIRC_STORE_REG_h(VAL, ADDR, START, LEN, INC) \
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CIRC_STORE_REG(h, "", VAL, ADDR, START, LEN, INC)
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#define CIRC_STORE_REG_f(VAL, ADDR, START, LEN, INC) \
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CIRC_STORE_REG(h, ".H", VAL, ADDR, START, LEN, INC)
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#define CIRC_STORE_REG_w(VAL, ADDR, START, LEN, INC) \
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CIRC_STORE_REG(w, "", VAL, ADDR, START, LEN, INC)
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#define CIRC_STORE_REG_d(VAL, ADDR, START, LEN, INC) \
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CIRC_STORE_REG(d, "", VAL, ADDR, START, LEN, INC)
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#define CIRC_STORE_NEW_REG(SIZE, VAL, ADDR, START, LEN, INC) \
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__asm__( \
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"r4 = %1\n\t" \
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"m1 = r4\n\t" \
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"cs1 = %2\n\t" \
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"{\n\t" \
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" r5 = %3\n\t" \
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" mem" #SIZE "(%0++I:circ(M1)) = r5.new\n\t" \
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"}\n\t" \
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: "+r"(ADDR) \
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: "r"(build_mreg((INC), 0, (LEN))), \
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"r"(START), \
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"r"(VAL) \
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: "r4", "r5", "m1", "cs1", "memory")
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#define CIRC_STORE_REG_bnew(VAL, ADDR, START, LEN, INC) \
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CIRC_STORE_NEW_REG(b, VAL, ADDR, START, LEN, INC)
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#define CIRC_STORE_REG_hnew(VAL, ADDR, START, LEN, INC) \
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CIRC_STORE_NEW_REG(h, VAL, ADDR, START, LEN, INC)
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#define CIRC_STORE_REG_wnew(VAL, ADDR, START, LEN, INC) \
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CIRC_STORE_NEW_REG(w, VAL, ADDR, START, LEN, INC)
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int err;
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/* We'll test increments +1 and -1 */
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void check_load(int i, long long result, int inc, int size)
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{
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int expect = (i * inc);
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while (expect >= size) {
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expect -= size;
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}
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while (expect < 0) {
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expect += size;
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}
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if (result != expect) {
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printf("ERROR(%d): %lld != %d\n", i, result, expect);
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err++;
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}
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}
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#define TEST_LOAD_IMM(SZ, TYPE, BUF, BUFSIZE, INC, FMT) \
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void circ_test_load_imm_##SZ(void) \
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{ \
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TYPE *p = (TYPE *)BUF; \
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int size = 10; \
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int i; \
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for (i = 0; i < BUFSIZE; i++) { \
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TYPE element; \
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CIRC_LOAD_IMM_##SZ(element, p, BUF, size * sizeof(TYPE), (INC)); \
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DEBUG_PRINTF("i = %2d, p = 0x%p, element = %2" #FMT "\n", \
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i, p, element); \
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check_load(i, element, ((INC) / (int)sizeof(TYPE)), size); \
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} \
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p = (TYPE *)BUF; \
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for (i = 0; i < BUFSIZE; i++) { \
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TYPE element; \
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CIRC_LOAD_IMM_##SZ(element, p, BUF, size * sizeof(TYPE), -(INC)); \
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DEBUG_PRINTF("i = %2d, p = 0x%p, element = %2" #FMT "\n", \
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i, p, element); \
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check_load(i, element, (-(INC) / (int)sizeof(TYPE)), size); \
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} \
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}
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TEST_LOAD_IMM(b, char, bbuf, NBYTES, 1, d)
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TEST_LOAD_IMM(ub, unsigned char, bbuf, NBYTES, 1, d)
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TEST_LOAD_IMM(h, short, hbuf, NHALFS, 2, d)
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TEST_LOAD_IMM(uh, unsigned short, hbuf, NHALFS, 2, d)
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TEST_LOAD_IMM(w, int, wbuf, NWORDS, 4, d)
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TEST_LOAD_IMM(d, long long, dbuf, NDOBLS, 8, lld)
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#define TEST_LOAD_REG(SZ, TYPE, BUF, BUFSIZE, FMT) \
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void circ_test_load_reg_##SZ(void) \
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{ \
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TYPE *p = (TYPE *)BUF; \
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int size = 13; \
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int i; \
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for (i = 0; i < BUFSIZE; i++) { \
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TYPE element; \
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CIRC_LOAD_REG_##SZ(element, p, BUF, size * sizeof(TYPE), 1); \
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DEBUG_PRINTF("i = %2d, p = 0x%p, element = %2" #FMT "\n", \
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i, p, element); \
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check_load(i, element, 1, size); \
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} \
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p = (TYPE *)BUF; \
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for (i = 0; i < BUFSIZE; i++) { \
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TYPE element; \
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CIRC_LOAD_REG_##SZ(element, p, BUF, size * sizeof(TYPE), -1); \
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DEBUG_PRINTF("i = %2d, p = 0x%p, element = %2" #FMT "\n", \
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i, p, element); \
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check_load(i, element, -1, size); \
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} \
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}
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TEST_LOAD_REG(b, char, bbuf, NBYTES, d)
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TEST_LOAD_REG(ub, unsigned char, bbuf, NBYTES, d)
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TEST_LOAD_REG(h, short, hbuf, NHALFS, d)
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TEST_LOAD_REG(uh, unsigned short, hbuf, NHALFS, d)
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TEST_LOAD_REG(w, int, wbuf, NWORDS, d)
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TEST_LOAD_REG(d, long long, dbuf, NDOBLS, lld)
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/* The circular stores will wrap around somewhere inside the buffer */
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#define CIRC_VAL(SZ, TYPE, BUFSIZE) \
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TYPE circ_val_##SZ(int i, int inc, int size) \
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{ \
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int mod = BUFSIZE % size; \
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int elem = i * inc; \
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if (elem < 0) { \
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if (-elem <= size - mod) { \
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return (elem + BUFSIZE - mod); \
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} else { \
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return (elem + BUFSIZE + size - mod); \
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} \
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} else if (elem < mod) {\
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return (elem + BUFSIZE - mod); \
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} else { \
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return (elem + BUFSIZE - size - mod); \
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} \
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}
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CIRC_VAL(b, unsigned char, NBYTES)
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CIRC_VAL(h, short, NHALFS)
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CIRC_VAL(w, int, NWORDS)
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CIRC_VAL(d, long long, NDOBLS)
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/*
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* Circular stores should only write to the first "size" elements of the buffer
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* the remainder of the elements should have BUF[i] == i
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*/
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#define CHECK_STORE(SZ, BUF, BUFSIZE, FMT) \
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void check_store_##SZ(int inc, int size) \
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{ \
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int i; \
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for (i = 0; i < size; i++) { \
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DEBUG_PRINTF(#BUF "[%3d] = 0x%02" #FMT ", guess = 0x%02" #FMT "\n", \
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i, BUF[i], circ_val_##SZ(i, inc, size)); \
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if (BUF[i] != circ_val_##SZ(i, inc, size)) { \
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printf("ERROR(%3d): 0x%02" #FMT " != 0x%02" #FMT "\n", \
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i, BUF[i], circ_val_##SZ(i, inc, size)); \
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err++; \
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} \
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} \
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for (i = size; i < BUFSIZE; i++) { \
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if (BUF[i] != i) { \
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printf("ERROR(%3d): 0x%02" #FMT " != 0x%02x\n", i, BUF[i], i); \
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err++; \
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} \
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} \
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}
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CHECK_STORE(b, bbuf, NBYTES, x)
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CHECK_STORE(h, hbuf, NHALFS, x)
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CHECK_STORE(w, wbuf, NWORDS, x)
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CHECK_STORE(d, dbuf, NDOBLS, llx)
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#define CIRC_TEST_STORE_IMM(SZ, CHK, TYPE, BUF, BUFSIZE, SHIFT, INC) \
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void circ_test_store_imm_##SZ(void) \
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{ \
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unsigned int size = 27; \
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TYPE *p = BUF; \
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TYPE val = 0; \
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int i; \
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init_##BUF(); \
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for (i = 0; i < BUFSIZE; i++) { \
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CIRC_STORE_IMM_##SZ(val << SHIFT, p, BUF, size * sizeof(TYPE), INC); \
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val++; \
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} \
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check_store_##CHK(((INC) / (int)sizeof(TYPE)), size); \
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p = BUF; \
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val = 0; \
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init_##BUF(); \
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for (i = 0; i < BUFSIZE; i++) { \
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CIRC_STORE_IMM_##SZ(val << SHIFT, p, BUF, size * sizeof(TYPE), \
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-(INC)); \
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val++; \
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} \
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check_store_##CHK((-(INC) / (int)sizeof(TYPE)), size); \
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}
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CIRC_TEST_STORE_IMM(b, b, unsigned char, bbuf, NBYTES, 0, 1)
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CIRC_TEST_STORE_IMM(h, h, short, hbuf, NHALFS, 0, 2)
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CIRC_TEST_STORE_IMM(f, h, short, hbuf, NHALFS, 16, 2)
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CIRC_TEST_STORE_IMM(w, w, int, wbuf, NWORDS, 0, 4)
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CIRC_TEST_STORE_IMM(d, d, long long, dbuf, NDOBLS, 0, 8)
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CIRC_TEST_STORE_IMM(bnew, b, unsigned char, bbuf, NBYTES, 0, 1)
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CIRC_TEST_STORE_IMM(hnew, h, short, hbuf, NHALFS, 0, 2)
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CIRC_TEST_STORE_IMM(wnew, w, int, wbuf, NWORDS, 0, 4)
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#define CIRC_TEST_STORE_REG(SZ, CHK, TYPE, BUF, BUFSIZE, SHIFT) \
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void circ_test_store_reg_##SZ(void) \
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{ \
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TYPE *p = BUF; \
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unsigned int size = 19; \
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TYPE val = 0; \
|
|
int i; \
|
|
init_##BUF(); \
|
|
for (i = 0; i < BUFSIZE; i++) { \
|
|
CIRC_STORE_REG_##SZ(val << SHIFT, p, BUF, size * sizeof(TYPE), 1); \
|
|
val++; \
|
|
} \
|
|
check_store_##CHK(1, size); \
|
|
p = BUF; \
|
|
val = 0; \
|
|
init_##BUF(); \
|
|
for (i = 0; i < BUFSIZE; i++) { \
|
|
CIRC_STORE_REG_##SZ(val << SHIFT, p, BUF, size * sizeof(TYPE), -1); \
|
|
val++; \
|
|
} \
|
|
check_store_##CHK(-1, size); \
|
|
}
|
|
|
|
CIRC_TEST_STORE_REG(b, b, unsigned char, bbuf, NBYTES, 0)
|
|
CIRC_TEST_STORE_REG(h, h, short, hbuf, NHALFS, 0)
|
|
CIRC_TEST_STORE_REG(f, h, short, hbuf, NHALFS, 16)
|
|
CIRC_TEST_STORE_REG(w, w, int, wbuf, NWORDS, 0)
|
|
CIRC_TEST_STORE_REG(d, d, long long, dbuf, NDOBLS, 0)
|
|
CIRC_TEST_STORE_REG(bnew, b, unsigned char, bbuf, NBYTES, 0)
|
|
CIRC_TEST_STORE_REG(hnew, h, short, hbuf, NHALFS, 0)
|
|
CIRC_TEST_STORE_REG(wnew, w, int, wbuf, NWORDS, 0)
|
|
|
|
/* Test the old scheme used in Hexagon V3 */
|
|
static void circ_test_v3(void)
|
|
{
|
|
int *p = wbuf;
|
|
int size = 15;
|
|
/* set high bit in K to test unsigned extract in fcirc */
|
|
int K = 8; /* 1024 bytes */
|
|
int element;
|
|
int i;
|
|
|
|
init_wbuf();
|
|
|
|
for (i = 0; i < NWORDS; i++) {
|
|
__asm__(
|
|
"r4 = %2\n\t"
|
|
"m1 = r4\n\t"
|
|
"%0 = memw(%1++I:circ(M1))\n\t"
|
|
: "=r"(element), "+r"(p)
|
|
: "r"(build_mreg(1, K, size * sizeof(int)))
|
|
: "r4", "m1");
|
|
DEBUG_PRINTF("i = %2d, p = 0x%p, element = %2d\n", i, p, element);
|
|
check_load(i, element, 1, size);
|
|
}
|
|
}
|
|
|
|
int main()
|
|
{
|
|
init_bbuf();
|
|
init_hbuf();
|
|
init_wbuf();
|
|
init_dbuf();
|
|
|
|
DEBUG_PRINTF("NBYTES = %d\n", NBYTES);
|
|
DEBUG_PRINTF("Address of dbuf = 0x%p\n", dbuf);
|
|
DEBUG_PRINTF("Address of wbuf = 0x%p\n", wbuf);
|
|
DEBUG_PRINTF("Address of hbuf = 0x%p\n", hbuf);
|
|
DEBUG_PRINTF("Address of bbuf = 0x%p\n", bbuf);
|
|
|
|
circ_test_load_imm_b();
|
|
circ_test_load_imm_ub();
|
|
circ_test_load_imm_h();
|
|
circ_test_load_imm_uh();
|
|
circ_test_load_imm_w();
|
|
circ_test_load_imm_d();
|
|
|
|
circ_test_load_reg_b();
|
|
circ_test_load_reg_ub();
|
|
circ_test_load_reg_h();
|
|
circ_test_load_reg_uh();
|
|
circ_test_load_reg_w();
|
|
circ_test_load_reg_d();
|
|
|
|
circ_test_store_imm_b();
|
|
circ_test_store_imm_h();
|
|
circ_test_store_imm_f();
|
|
circ_test_store_imm_w();
|
|
circ_test_store_imm_d();
|
|
circ_test_store_imm_bnew();
|
|
circ_test_store_imm_hnew();
|
|
circ_test_store_imm_wnew();
|
|
|
|
circ_test_store_reg_b();
|
|
circ_test_store_reg_h();
|
|
circ_test_store_reg_f();
|
|
circ_test_store_reg_w();
|
|
circ_test_store_reg_d();
|
|
circ_test_store_reg_bnew();
|
|
circ_test_store_reg_hnew();
|
|
circ_test_store_reg_wnew();
|
|
|
|
circ_test_v3();
|
|
|
|
puts(err ? "FAIL" : "PASS");
|
|
return err ? 1 : 0;
|
|
}
|