diff options
author | Mike Frysinger <vapier@gentoo.org> | 2011-04-16 17:37:55 +0000 |
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committer | Mike Frysinger <vapier@gentoo.org> | 2011-04-16 17:37:55 +0000 |
commit | 0427acfba0c41b73d1472602c8e41b34f6e89f82 (patch) | |
tree | 97d58bf5f01b5b78ea8cba71414eb82c04f6500c /sim/bfin | |
parent | ee79072f9e3b1a54572aff473aa1057e5bbe5cd9 (diff) | |
download | gdb-0427acfba0c41b73d1472602c8e41b34f6e89f82.zip gdb-0427acfba0c41b73d1472602c8e41b34f6e89f82.tar.gz gdb-0427acfba0c41b73d1472602c8e41b34f6e89f82.tar.bz2 |
sim: bfin: use store buffer with more 32bit insns
A bunch of 32bit insns were not using the store buffer, so when they were
used in parallel insns, they would incorrectly clobber a register early.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'sim/bfin')
-rw-r--r-- | sim/bfin/ChangeLog | 8 | ||||
-rw-r--r-- | sim/bfin/bfin-sim.c | 52 |
2 files changed, 37 insertions, 23 deletions
diff --git a/sim/bfin/ChangeLog b/sim/bfin/ChangeLog index 7bbd15e..25944fd 100644 --- a/sim/bfin/ChangeLog +++ b/sim/bfin/ChangeLog @@ -1,3 +1,11 @@ +2011-04-16 Mike Frysinger <vapier@gentoo.org> + + * bfin-sim.c (decode_dsp32alu_0): Call STORE instead of SET_DREG for + BYTEOP2P, BYTEOP3P, BYTEOP1P, BYTEOP16P, BYTEOP16M, BYTEPACK, and + BYTEUNPACK. + (decode_dsp32shift_0): Call STORE instead of SET_DREG for PACK, + BITMUX, EXTRACT, DEPOSIT, ALIGN8, ALIGN16, and ALIGN24. + 2011-04-14 Mike Frysinger <vapier@gentoo.org> * bfin-sim.c (decode_dsp32alu_0): Set DIS_ALGN_EXPT when handling diff --git a/sim/bfin/bfin-sim.c b/sim/bfin/bfin-sim.c index f1500b0..13e8850 100644 --- a/sim/bfin/bfin-sim.c +++ b/sim/bfin/bfin-sim.c @@ -4213,7 +4213,7 @@ decode_dsp32alu_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1) ((s0 >> 8) & 0xff) + ((s0 >> 0) & 0xff) + i) >> 2) & 0xff; tmp1 = ((((s1 >> 24) & 0xff) + ((s1 >> 16) & 0xff) + ((s0 >> 24) & 0xff) + ((s0 >> 16) & 0xff) + i) >> 2) & 0xff; - SET_DREG (dst0, (tmp1 << (16 + (HL * 8))) | (tmp0 << (HL * 8))); + STORE (DREG (dst0), (tmp1 << (16 + (HL * 8))) | (tmp0 << (HL * 8))); /* Implicit DISALGNEXCPT in parallel. */ DIS_ALGN_EXPT |= 1; @@ -4331,8 +4331,8 @@ decode_dsp32alu_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1) tmp0 = (bs32)(bs16)(s0 >> 0) + ((s1 >> ( 0 + (8 * !HL))) & 0xff); tmp1 = (bs32)(bs16)(s0 >> 16) + ((s1 >> (16 + (8 * !HL))) & 0xff); - SET_DREG (dst0, (CLAMP (tmp0, 0, 255) << ( 0 + (8 * HL))) | - (CLAMP (tmp1, 0, 255) << (16 + (8 * HL)))); + STORE (DREG (dst0), (CLAMP (tmp0, 0, 255) << ( 0 + (8 * HL))) | + (CLAMP (tmp1, 0, 255) << (16 + (8 * HL)))); /* Implicit DISALGNEXCPT in parallel. */ DIS_ALGN_EXPT |= 1; @@ -4817,7 +4817,7 @@ decode_dsp32alu_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1) s1 = algn (s1L, s1H, IREG (1) & 3); } - SET_DREG (dst0, + STORE (DREG (dst0), (((((s0 >> 0) & 0xff) + ((s1 >> 0) & 0xff) + !aop) >> 1) << 0) | (((((s0 >> 8) & 0xff) + ((s1 >> 8) & 0xff) + !aop) >> 1) << 8) | (((((s0 >> 16) & 0xff) + ((s1 >> 16) & 0xff) + !aop) >> 1) << 16) | @@ -4851,10 +4851,10 @@ decode_dsp32alu_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1) s1 = algn (s1L, s1H, IREG (1) & 3); } - SET_DREG (dst0, + STORE (DREG (dst0), ((((s0 >> 0) & 0xff) + ((s1 >> 0) & 0xff)) << 0) | ((((s0 >> 8) & 0xff) + ((s1 >> 8) & 0xff)) << 16)); - SET_DREG (dst1, + STORE (DREG (dst1), ((((s0 >> 16) & 0xff) + ((s1 >> 16) & 0xff)) << 0) | ((((s0 >> 24) & 0xff) + ((s1 >> 24) & 0xff)) << 16)); @@ -4886,10 +4886,10 @@ decode_dsp32alu_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1) s1 = algn (s1L, s1H, IREG (1) & 3); } - SET_DREG (dst0, + STORE (DREG (dst0), (((((s0 >> 0) & 0xff) - ((s1 >> 0) & 0xff)) << 0) & 0xffff) | (((((s0 >> 8) & 0xff) - ((s1 >> 8) & 0xff)) << 16))); - SET_DREG (dst1, + STORE (DREG (dst1), (((((s0 >> 16) & 0xff) - ((s1 >> 16) & 0xff)) << 0) & 0xffff) | (((((s0 >> 24) & 0xff) - ((s1 >> 24) & 0xff)) << 16))); @@ -4986,7 +4986,7 @@ decode_dsp32alu_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1) else if (aop == 0 && aopcde == 24) { TRACE_INSN (cpu, "R%i = BYTEPACK (R%i, R%i);", dst0, src0, src1); - SET_DREG (dst0, + STORE (DREG (dst0), (((DREG (src0) >> 0) & 0xff) << 0) | (((DREG (src0) >> 16) & 0xff) << 8) | (((DREG (src1) >> 0) & 0xff) << 16) | @@ -5017,8 +5017,8 @@ decode_dsp32alu_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1) byteb = (comb_src >> (8 + 8 * order)); bytec = (comb_src >> (16 + 8 * order)); byted = (comb_src >> (24 + 8 * order)); - SET_DREG (dst0, bytea | ((bu32)byteb << 16)); - SET_DREG (dst1, bytec | ((bu32)byted << 16)); + STORE (DREG (dst0), bytea | ((bu32)byteb << 16)); + STORE (DREG (dst1), bytec | ((bu32)byted << 16)); /* Implicit DISALGNEXCPT in parallel. */ DIS_ALGN_EXPT |= 1; @@ -5305,7 +5305,7 @@ decode_dsp32shift_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1) sv0 >>= 16; if (sop & 2) sv1 >>= 16; - SET_DREG (dst0, (sv1 << 16) | (sv0 & 0xFFFF)); + STORE (DREG (dst0), (sv1 << 16) | (sv0 & 0xFFFF)); } else if (sop == 0 && sopcde == 5) { @@ -5423,8 +5423,8 @@ decode_dsp32shift_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1) acc = (acc >> 2) | (((bu64)s0 & 1) << 38) | (((bu64)s1 & 1) << 39); - SET_DREG (src0, s0 >> 1); - SET_DREG (src1, s1 >> 1); + STORE (DREG (src0), s0 >> 1); + STORE (DREG (src1), s1 >> 1); SET_AREG (0, acc); } @@ -5443,8 +5443,8 @@ decode_dsp32shift_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1) acc = (acc << 2) | ((s0 >> 31) & 1) | ((s1 >> 30) & 2); - SET_DREG (src0, s0 << 1); - SET_DREG (src1, s1 << 1); + STORE (DREG (src0), s0 << 1); + STORE (DREG (src1), s1 << 1); SET_AREG (0, acc); } @@ -5517,10 +5517,13 @@ decode_dsp32shift_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1) bu32 v = DREG (src0); bu32 x = DREG (src1); bu32 mask = (1 << (v & 0x1f)) - 1; + TRACE_INSN (cpu, "R%i = EXTRACT (R%i, R%i.L) (Z);", dst0, src1, src0); + x >>= ((v >> 8) & 0x1f); - SET_DREG (dst0, x & mask); - setflags_logical (cpu, DREG (dst0)); + x &= mask; + STORE (DREG (dst0), x); + setflags_logical (cpu, x); } else if (sop == 1 && sopcde == 10) { @@ -5528,13 +5531,15 @@ decode_dsp32shift_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1) bu32 x = DREG (src1); bu32 sgn = (1 << (v & 0x1f)) >> 1; bu32 mask = (1 << (v & 0x1f)) - 1; + TRACE_INSN (cpu, "R%i = EXTRACT (R%i, R%i.L) (X);", dst0, src1, src0); + x >>= ((v >> 8) & 0x1f); x &= mask; if (x & sgn) x |= ~mask; - SET_DREG (dst0, x); - setflags_logical (cpu, DREG (dst0)); + STORE (DREG (dst0), x); + setflags_logical (cpu, x); } else if ((sop == 2 || sop == 3) && sopcde == 10) { @@ -5565,8 +5570,9 @@ decode_dsp32shift_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1) mask <<= shft; bg &= ~mask; - SET_DREG (dst0, bg | fgnd); - setflags_logical (cpu, DREG (dst0)); + bg |= fgnd; + STORE (DREG (dst0), bg); + setflags_logical (cpu, bg); } else if (sop == 0 && sopcde == 11) { @@ -5613,7 +5619,7 @@ decode_dsp32shift_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1) { int shift = (sop + 1) * 8; TRACE_INSN (cpu, "R%i = ALIGN%i (R%i, R%i);", dst0, shift, src1, src0); - SET_DREG (dst0, (DREG (src1) << (32 - shift)) | (DREG (src0) >> shift)); + STORE (DREG (dst0), (DREG (src1) << (32 - shift)) | (DREG (src0) >> shift)); } else illegal_instruction (cpu); |