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CRIS: Avoid using cpu_T[0] for testing condition codes. 

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5547 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
edgar_igl 2008-10-27 13:52:44 +00:00
parent 7dcfb0897b
commit c5631f487d
1 changed files with 41 additions and 44 deletions
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85
target-cris/translate.c
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@ -973,7 +973,7 @@ static int arith_cc(DisasContext *dc)
return 0;
}
static void gen_tst_cc (DisasContext *dc, int cond)
static void gen_tst_cc (DisasContext *dc, TCGv cc, int cond)
{
int arith_opt, move_opt;
@ -996,46 +996,46 @@ static void gen_tst_cc (DisasContext *dc, int cond)
non-zero otherwise T0 should be zero. */
int l1;
l1 = gen_new_label();
tcg_gen_movi_tl(cpu_T[0], 0);
tcg_gen_movi_tl(cc, 0);
tcg_gen_brcondi_tl(TCG_COND_NE, cc_result,
0, l1);
tcg_gen_movi_tl(cpu_T[0], 1);
tcg_gen_movi_tl(cc, 1);
gen_set_label(l1);
}
else {
cris_evaluate_flags(dc);
tcg_gen_andi_tl(cpu_T[0],
tcg_gen_andi_tl(cc,
cpu_PR[PR_CCS], Z_FLAG);
}
break;
case CC_NE:
if (arith_opt || move_opt)
tcg_gen_mov_tl(cpu_T[0], cc_result);
tcg_gen_mov_tl(cc, cc_result);
else {
cris_evaluate_flags(dc);
tcg_gen_xori_tl(cpu_T[0], cpu_PR[PR_CCS],
tcg_gen_xori_tl(cc, cpu_PR[PR_CCS],
Z_FLAG);
tcg_gen_andi_tl(cpu_T[0], cpu_T[0], Z_FLAG);
tcg_gen_andi_tl(cc, cc, Z_FLAG);
}
break;
case CC_CS:
cris_evaluate_flags(dc);
tcg_gen_andi_tl(cpu_T[0], cpu_PR[PR_CCS], C_FLAG);
tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], C_FLAG);
break;
case CC_CC:
cris_evaluate_flags(dc);
tcg_gen_xori_tl(cpu_T[0], cpu_PR[PR_CCS], C_FLAG);
tcg_gen_andi_tl(cpu_T[0], cpu_T[0], C_FLAG);
tcg_gen_xori_tl(cc, cpu_PR[PR_CCS], C_FLAG);
tcg_gen_andi_tl(cc, cc, C_FLAG);
break;
case CC_VS:
cris_evaluate_flags(dc);
tcg_gen_andi_tl(cpu_T[0], cpu_PR[PR_CCS], V_FLAG);
tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], V_FLAG);
break;
case CC_VC:
cris_evaluate_flags(dc);
tcg_gen_xori_tl(cpu_T[0], cpu_PR[PR_CCS],
tcg_gen_xori_tl(cc, cpu_PR[PR_CCS],
V_FLAG);
tcg_gen_andi_tl(cpu_T[0], cpu_T[0], V_FLAG);
tcg_gen_andi_tl(cc, cc, V_FLAG);
break;
case CC_PL:
if (arith_opt || move_opt) {
@ -1046,13 +1046,13 @@ static void gen_tst_cc (DisasContext *dc, int cond)
else if (dc->cc_size == 2)
bits = 15;
tcg_gen_shri_tl(cpu_T[0], cc_result, bits);
tcg_gen_xori_tl(cpu_T[0], cpu_T[0], 1);
tcg_gen_shri_tl(cc, cc_result, bits);
tcg_gen_xori_tl(cc, cc, 1);
} else {
cris_evaluate_flags(dc);
tcg_gen_xori_tl(cpu_T[0], cpu_PR[PR_CCS],
tcg_gen_xori_tl(cc, cpu_PR[PR_CCS],
N_FLAG);
tcg_gen_andi_tl(cpu_T[0], cpu_T[0], N_FLAG);
tcg_gen_andi_tl(cc, cc, N_FLAG);
}
break;
case CC_MI:
@ -1064,17 +1064,17 @@ static void gen_tst_cc (DisasContext *dc, int cond)
else if (dc->cc_size == 2)
bits = 15;
tcg_gen_shri_tl(cpu_T[0], cc_result, 31);
tcg_gen_shri_tl(cc, cc_result, 31);
}
else {
cris_evaluate_flags(dc);
tcg_gen_andi_tl(cpu_T[0], cpu_PR[PR_CCS],
tcg_gen_andi_tl(cc, cpu_PR[PR_CCS],
N_FLAG);
}
break;
case CC_LS:
cris_evaluate_flags(dc);
tcg_gen_andi_tl(cpu_T[0], cpu_PR[PR_CCS],
tcg_gen_andi_tl(cc, cpu_PR[PR_CCS],
C_FLAG | Z_FLAG);
break;
case CC_HI:
@ -1086,9 +1086,9 @@ static void gen_tst_cc (DisasContext *dc, int cond)
tcg_gen_xori_tl(tmp, cpu_PR[PR_CCS],
C_FLAG | Z_FLAG);
/* Overlay the C flag on top of the Z. */
tcg_gen_shli_tl(cpu_T[0], tmp, 2);
tcg_gen_and_tl(cpu_T[0], tmp, cpu_T[0]);
tcg_gen_andi_tl(cpu_T[0], cpu_T[0], Z_FLAG);
tcg_gen_shli_tl(cc, tmp, 2);
tcg_gen_and_tl(cc, tmp, cc);
tcg_gen_andi_tl(cc, cc, Z_FLAG);
tcg_temp_free(tmp);
}
@ -1096,19 +1096,19 @@ static void gen_tst_cc (DisasContext *dc, int cond)
case CC_GE:
cris_evaluate_flags(dc);
/* Overlay the V flag on top of the N. */
tcg_gen_shli_tl(cpu_T[0], cpu_PR[PR_CCS], 2);
tcg_gen_xor_tl(cpu_T[0],
cpu_PR[PR_CCS], cpu_T[0]);
tcg_gen_andi_tl(cpu_T[0], cpu_T[0], N_FLAG);
tcg_gen_xori_tl(cpu_T[0], cpu_T[0], N_FLAG);
tcg_gen_shli_tl(cc, cpu_PR[PR_CCS], 2);
tcg_gen_xor_tl(cc,
cpu_PR[PR_CCS], cc);
tcg_gen_andi_tl(cc, cc, N_FLAG);
tcg_gen_xori_tl(cc, cc, N_FLAG);
break;
case CC_LT:
cris_evaluate_flags(dc);
/* Overlay the V flag on top of the N. */
tcg_gen_shli_tl(cpu_T[0], cpu_PR[PR_CCS], 2);
tcg_gen_xor_tl(cpu_T[0],
cpu_PR[PR_CCS], cpu_T[0]);
tcg_gen_andi_tl(cpu_T[0], cpu_T[0], N_FLAG);
tcg_gen_shli_tl(cc, cpu_PR[PR_CCS], 2);
tcg_gen_xor_tl(cc,
cpu_PR[PR_CCS], cc);
tcg_gen_andi_tl(cc, cc, N_FLAG);
break;
case CC_GT:
cris_evaluate_flags(dc);
@ -1127,8 +1127,8 @@ static void gen_tst_cc (DisasContext *dc, int cond)
tcg_gen_xor_tl(n, n, cpu_PR[PR_CCS]);
tcg_gen_xori_tl(n, n, 2);
tcg_gen_and_tl(cpu_T[0], z, n);
tcg_gen_andi_tl(cpu_T[0], cpu_T[0], 2);
tcg_gen_and_tl(cc, z, n);
tcg_gen_andi_tl(cc, cc, 2);
tcg_temp_free(n);
tcg_temp_free(z);
@ -1148,8 +1148,8 @@ static void gen_tst_cc (DisasContext *dc, int cond)
tcg_gen_shri_tl(z, cpu_PR[PR_CCS], 1);
tcg_gen_xor_tl(n, n, cpu_PR[PR_CCS]);
tcg_gen_or_tl(cpu_T[0], z, n);
tcg_gen_andi_tl(cpu_T[0], cpu_T[0], 2);
tcg_gen_or_tl(cc, z, n);
tcg_gen_andi_tl(cc, cc, 2);
tcg_temp_free(n);
tcg_temp_free(z);
@ -1157,10 +1157,10 @@ static void gen_tst_cc (DisasContext *dc, int cond)
break;
case CC_P:
cris_evaluate_flags(dc);
tcg_gen_andi_tl(cpu_T[0], cpu_PR[PR_CCS], P_FLAG);
tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], P_FLAG);
break;
case CC_A:
tcg_gen_movi_tl(cpu_T[0], 1);
tcg_gen_movi_tl(cc, 1);
break;
default:
BUG();
@ -1188,8 +1188,7 @@ static void cris_prepare_cc_branch (DisasContext *dc,
if (cond != CC_A)
{
dc->jmp = JMP_INDIRECT;
gen_tst_cc (dc, cond);
tcg_gen_mov_tl(env_btaken, cpu_T[0]);
gen_tst_cc (dc, env_btaken, cond);
tcg_gen_movi_tl(env_btarget, dc->jmp_pc);
} else {
/* Allow chaining. */
@ -1623,11 +1622,9 @@ static unsigned int dec_scc_r(DisasContext *dc)
{
int l1;
gen_tst_cc (dc, cond);
gen_tst_cc (dc, cpu_R[dc->op1], cond);
l1 = gen_new_label();
tcg_gen_movi_tl(cpu_R[dc->op1], 0);
tcg_gen_brcondi_tl(TCG_COND_EQ, cpu_T[0], 0, l1);
tcg_gen_brcondi_tl(TCG_COND_EQ, cpu_R[dc->op1], 0, l1);
tcg_gen_movi_tl(cpu_R[dc->op1], 1);
gen_set_label(l1);
}