5e806fb002
This patch introduces Octeon-specific decoder and implements check-bit-and-jump instructions. Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <165572672705.167724.16667636081912075906.stgit@pasha-ThinkPad-X280> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
/*
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* Octeon-specific instructions translation routines
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*
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* Copyright (c) 2022 Pavel Dovgalyuk
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "qemu/osdep.h"
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#include "tcg/tcg-op.h"
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#include "tcg/tcg-op-gvec.h"
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#include "exec/helper-gen.h"
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#include "translate.h"
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/* Include the auto-generated decoder. */
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#include "decode-octeon.c.inc"
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static bool trans_BBIT(DisasContext *ctx, arg_BBIT *a)
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{
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TCGv p;
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if (ctx->hflags & MIPS_HFLAG_BMASK) {
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LOG_DISAS("Branch in delay / forbidden slot at PC 0x"
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TARGET_FMT_lx "\n", ctx->base.pc_next);
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generate_exception_end(ctx, EXCP_RI);
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return true;
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}
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/* Load needed operands */
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TCGv t0 = tcg_temp_new();
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gen_load_gpr(t0, a->rs);
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p = tcg_constant_tl(1ULL << a->p);
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if (a->set) {
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tcg_gen_and_tl(bcond, p, t0);
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} else {
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tcg_gen_andc_tl(bcond, p, t0);
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}
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ctx->hflags |= MIPS_HFLAG_BC;
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ctx->btarget = ctx->base.pc_next + 4 + a->offset * 4;
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ctx->hflags |= MIPS_HFLAG_BDS32;
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tcg_temp_free(t0);
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return true;
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}
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