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target-microblaze: dec_msr: Reuse more code when reg-decoding 

Reuse more code when decoding register numbers.

No functional changes.

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
This commit is contained in:
Edgar E. Iglesias 2018-04-14 15:46:20 +02:00
parent 2023e9a3bc
commit 351527b712
1 changed files with 9 additions and 29 deletions
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38
target/microblaze/translate.c
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@ -531,11 +531,9 @@ static void dec_msr(DisasContext *dc)
case 1:
msr_write(dc, cpu_R[dc->ra]);
break;
case 0x3:
tcg_gen_mov_i32(cpu_SR[SR_EAR], cpu_R[dc->ra]);
break;
case 0x5:
tcg_gen_mov_i32(cpu_SR[SR_ESR], cpu_R[dc->ra]);
case SR_EAR:
case SR_ESR:
tcg_gen_mov_i32(cpu_SR[sr], cpu_R[dc->ra]);
break;
case 0x7:
tcg_gen_andi_i32(cpu_SR[SR_FSR], cpu_R[dc->ra], 31);
@ -562,17 +560,11 @@ static void dec_msr(DisasContext *dc)
case 1:
msr_read(dc, cpu_R[dc->rd]);
break;
case 0x3:
tcg_gen_mov_i32(cpu_R[dc->rd], cpu_SR[SR_EAR]);
break;
case 0x5:
tcg_gen_mov_i32(cpu_R[dc->rd], cpu_SR[SR_ESR]);
break;
case 0x7:
tcg_gen_mov_i32(cpu_R[dc->rd], cpu_SR[SR_FSR]);
break;
case 0xb:
tcg_gen_mov_i32(cpu_R[dc->rd], cpu_SR[SR_BTR]);
case SR_EAR:
case SR_ESR:
case SR_FSR:
case SR_BTR:
tcg_gen_mov_i32(cpu_R[dc->rd], cpu_SR[sr]);
break;
case 0x800:
tcg_gen_ld_i32(cpu_R[dc->rd],
@ -582,19 +574,7 @@ static void dec_msr(DisasContext *dc)
tcg_gen_ld_i32(cpu_R[dc->rd],
cpu_env, offsetof(CPUMBState, shr));
break;
case 0x2000:
case 0x2001:
case 0x2002:
case 0x2003:
case 0x2004:
case 0x2005:
case 0x2006:
case 0x2007:
case 0x2008:
case 0x2009:
case 0x200a:
case 0x200b:
case 0x200c:
case 0x2000 ... 0x200c:
rn = sr & 0xf;
tcg_gen_ld_i32(cpu_R[dc->rd],
cpu_env, offsetof(CPUMBState, pvr.regs[rn]));