This avoids having to keep merging and extracting the flag from SR.
Signed-off-by: Richard Henderson <r...@twiddle.net>
---
target-openrisc/cpu.h | 15 +++++-
target-openrisc/gdbstub.c | 4 +-
target-openrisc/interrupt.c | 2 +-
target-openrisc/interrupt_helper.c | 2 +-
target-openrisc/sys_helper.c | 5 +-
target-openrisc/translate.c | 96 +++++++++++++++-----------------------
6 files changed, 56 insertions(+), 68 deletions(-)
diff --git a/target-openrisc/cpu.h b/target-openrisc/cpu.h
index 36c4f20..e91f2a9 100644
--- a/target-openrisc/cpu.h
+++ b/target-openrisc/cpu.h
@@ -288,7 +288,8 @@ typedef struct CPUOpenRISCState {
target_ulong epcr; /* Exception PC register */
target_ulong eear; /* Exception EA register */
- uint32_t sr; /* Supervisor register */
+ target_ulong sr_f; /* the SR_F bit */
+ uint32_t sr; /* Supervisor register, without SR_F */
uint32_t vr; /* Version register */
uint32_t upr; /* Unit presence register */
uint32_t cpucfgr; /* CPU configure register */
@@ -300,7 +301,6 @@ typedef struct CPUOpenRISCState {
uint32_t flags; /* cpu_flags, we only use it for exception
in solt so far. */
- uint32_t btaken; /* the SR_F bit */
CPU_COMMON
@@ -411,6 +411,17 @@ static inline int cpu_mmu_index(CPUOpenRISCState *env)
return (env->sr & SR_SM) == 0 ? MMU_USER_IDX : MMU_SUPERVISOR_IDX;
}
+static inline uint32_t cpu_get_sr(CPUOpenRISCState *env)
+{
+ return env->sr + env->sr_f * SR_F;
+}
+
+static inline void cpu_set_sr(CPUOpenRISCState *env, uint32_t val)
+{
+ env->sr_f = (val & SR_F) != 0;
+ env->sr = (val & ~SR_F) | SR_FO;
+}
+
#define CPU_INTERRUPT_TIMER CPU_INTERRUPT_TGT_INT_0
#include "exec/exec-all.h"
diff --git a/target-openrisc/gdbstub.c b/target-openrisc/gdbstub.c
index 18bcc46..96e9d89 100644
--- a/target-openrisc/gdbstub.c
+++ b/target-openrisc/gdbstub.c
@@ -37,7 +37,7 @@ int openrisc_cpu_gdb_read_register(CPUState *cs, uint8_t
*mem_buf, int n)
return gdb_get_reg32(mem_buf, env->npc);
case 34: /* SR */
- return gdb_get_reg32(mem_buf, env->sr);
+ return gdb_get_reg32(mem_buf, cpu_get_sr(env));
default:
break;
@@ -72,7 +72,7 @@ int openrisc_cpu_gdb_write_register(CPUState *cs, uint8_t
*mem_buf, int n)
break;
case 34: /* SR */
- env->sr = tmp;
+ cpu_set_sr(env, tmp);
break;
default:
diff --git a/target-openrisc/interrupt.c b/target-openrisc/interrupt.c
index e480cfd..2d89acb 100644
--- a/target-openrisc/interrupt.c
+++ b/target-openrisc/interrupt.c
@@ -45,7 +45,7 @@ void openrisc_cpu_do_interrupt(CPUState *cs)
we need flush TLB when we enter&exit EXCP. */
tlb_flush(cs, 1);
- env->esr = env->sr;
+ env->esr = cpu_get_sr(env);
env->sr &= ~SR_DME;
env->sr &= ~SR_IME;
env->sr |= SR_SM;
diff --git a/target-openrisc/interrupt_helper.c
b/target-openrisc/interrupt_helper.c
index 55a780c..8695fe7 100644
--- a/target-openrisc/interrupt_helper.c
+++ b/target-openrisc/interrupt_helper.c
@@ -31,7 +31,7 @@ void HELPER(rfe)(CPUOpenRISCState *env)
#endif
cpu->env.pc = cpu->env.epcr;
cpu->env.npc = cpu->env.epcr;
- cpu->env.sr = cpu->env.esr;
+ cpu_set_sr(&cpu->env, cpu->env.esr);
#ifndef CONFIG_USER_ONLY
if (cpu->env.sr & SR_DME) {
diff --git a/target-openrisc/sys_helper.c b/target-openrisc/sys_helper.c
index 53ca6bc..0d411eb 100644
--- a/target-openrisc/sys_helper.c
+++ b/target-openrisc/sys_helper.c
@@ -47,8 +47,7 @@ void HELPER(mtspr)(CPUOpenRISCState *env,
(rb & (SR_IME | SR_DME | SR_SM))) {
tlb_flush(cs, 1);
}
- env->sr = rb;
- env->sr |= SR_FO; /* FO is const equal to 1 */
+ cpu_set_sr(env, rb);
if (env->sr & SR_DME) {
env->tlb->cpu_openrisc_map_address_data =
&cpu_openrisc_get_phys_data;
@@ -198,7 +197,7 @@ target_ulong HELPER(mfspr)(CPUOpenRISCState *env,
return env->npc;
case TO_SPR(0, 17): /* SR */
- return env->sr;
+ return cpu_get_sr(env);
case TO_SPR(0, 18): /* PPC */
return env->ppc;
diff --git a/target-openrisc/translate.c b/target-openrisc/translate.c
index c9e3198..6520896 100644
--- a/target-openrisc/translate.c
+++ b/target-openrisc/translate.c
@@ -54,7 +54,7 @@ static TCGv cpu_pc;
static TCGv jmp_pc; /* l.jr/l.jalr temp pc */
static TCGv cpu_npc;
static TCGv cpu_ppc;
-static TCGv_i32 env_btaken; /* bf/bnf , F flag taken */
+static TCGv cpu_sr_f; /* bf/bnf, F flag taken */
static TCGv_i32 fpcsr;
static TCGv machi, maclo;
static TCGv fpmaddhi, fpmaddlo;
@@ -85,9 +85,8 @@ void openrisc_translate_init(void)
offsetof(CPUOpenRISCState, ppc), "ppc");
jmp_pc = tcg_global_mem_new(TCG_AREG0,
offsetof(CPUOpenRISCState, jmp_pc), "jmp_pc");
- env_btaken = tcg_global_mem_new_i32(TCG_AREG0,
- offsetof(CPUOpenRISCState, btaken),
- "btaken");
+ cpu_sr_f = tcg_global_mem_new(TCG_AREG0,
+ offsetof(CPUOpenRISCState, sr_f), "sr_f");
fpcsr = tcg_global_mem_new_i32(TCG_AREG0,
offsetof(CPUOpenRISCState, fpcsr),
"fpcsr");
@@ -110,16 +109,6 @@ void openrisc_translate_init(void)
}
}
-/* Writeback SR_F translation space to execution space. */
-static inline void wb_SR_F(void)
-{
- TCGLabel *label = gen_new_label();
- tcg_gen_andi_tl(cpu_sr, cpu_sr, ~SR_F);
- tcg_gen_brcondi_tl(TCG_COND_EQ, env_btaken, 0, label);
- tcg_gen_ori_tl(cpu_sr, cpu_sr, SR_F);
- gen_set_label(label);
-}
-
static inline int zero_extend(unsigned int val, int width)
{
return val & ((1 << width) - 1);
@@ -220,14 +209,11 @@ static void gen_jump(DisasContext *dc, uint32_t imm,
uint32_t reg, uint32_t op0)
case 0x04: /* l.bf */
{
TCGLabel *lab = gen_new_label();
- TCGv sr_f = tcg_temp_new();
tcg_gen_movi_tl(jmp_pc, dc->pc+8);
- tcg_gen_andi_tl(sr_f, cpu_sr, SR_F);
tcg_gen_brcondi_i32(op0 == 0x03 ? TCG_COND_EQ : TCG_COND_NE,
- sr_f, SR_F, lab);
+ cpu_sr_f, SR_F, lab);
tcg_gen_movi_tl(jmp_pc, tmp_pc);
gen_set_label(lab);
- tcg_temp_free(sr_f);
}
break;
case 0x11: /* l.jr */
@@ -512,14 +498,11 @@ static void dec_calc(DisasContext *dc, uint32_t insn)
{
TCGLabel *lab = gen_new_label();
TCGv res = tcg_temp_local_new();
- TCGv sr_f = tcg_temp_new();
- tcg_gen_andi_tl(sr_f, cpu_sr, SR_F);
tcg_gen_mov_tl(res, cpu_R[rb]);
- tcg_gen_brcondi_tl(TCG_COND_NE, sr_f, SR_F, lab);
+ tcg_gen_brcondi_tl(TCG_COND_NE, cpu_sr_f, SR_F, lab);
tcg_gen_mov_tl(res, cpu_R[ra]);
gen_set_label(lab);
tcg_gen_mov_tl(cpu_R[rd], res);
- tcg_temp_free(sr_f);
tcg_temp_free(res);
}
return;
@@ -986,7 +969,6 @@ static void dec_comp(DisasContext *dc, uint32_t insn)
ra = extract32(insn, 16, 5);
rb = extract32(insn, 11, 5);
- tcg_gen_movi_i32(env_btaken, 0x0);
/* unsigned integers */
tcg_gen_ext32u_tl(cpu_R[ra], cpu_R[ra]);
tcg_gen_ext32u_tl(cpu_R[rb], cpu_R[rb]);
@@ -994,59 +976,58 @@ static void dec_comp(DisasContext *dc, uint32_t insn)
switch (op0) {
case 0x0: /* l.sfeq */
LOG_DIS("l.sfeq r%d, r%d\n", ra, rb);
- tcg_gen_setcond_tl(TCG_COND_EQ, env_btaken, cpu_R[ra], cpu_R[rb]);
+ tcg_gen_setcond_tl(TCG_COND_EQ, cpu_sr_f, cpu_R[ra], cpu_R[rb]);
break;
case 0x1: /* l.sfne */
LOG_DIS("l.sfne r%d, r%d\n", ra, rb);
- tcg_gen_setcond_tl(TCG_COND_NE, env_btaken, cpu_R[ra], cpu_R[rb]);
+ tcg_gen_setcond_tl(TCG_COND_NE, cpu_sr_f, cpu_R[ra], cpu_R[rb]);
break;
case 0x2: /* l.sfgtu */
LOG_DIS("l.sfgtu r%d, r%d\n", ra, rb);
- tcg_gen_setcond_tl(TCG_COND_GTU, env_btaken, cpu_R[ra], cpu_R[rb]);
+ tcg_gen_setcond_tl(TCG_COND_GTU, cpu_sr_f, cpu_R[ra], cpu_R[rb]);
break;
case 0x3: /* l.sfgeu */
LOG_DIS("l.sfgeu r%d, r%d\n", ra, rb);
- tcg_gen_setcond_tl(TCG_COND_GEU, env_btaken, cpu_R[ra], cpu_R[rb]);
+ tcg_gen_setcond_tl(TCG_COND_GEU, cpu_sr_f, cpu_R[ra], cpu_R[rb]);
break;
case 0x4: /* l.sfltu */
LOG_DIS("l.sfltu r%d, r%d\n", ra, rb);
- tcg_gen_setcond_tl(TCG_COND_LTU, env_btaken, cpu_R[ra], cpu_R[rb]);
+ tcg_gen_setcond_tl(TCG_COND_LTU, cpu_sr_f, cpu_R[ra], cpu_R[rb]);
break;
case 0x5: /* l.sfleu */
LOG_DIS("l.sfleu r%d, r%d\n", ra, rb);
- tcg_gen_setcond_tl(TCG_COND_LEU, env_btaken, cpu_R[ra], cpu_R[rb]);
+ tcg_gen_setcond_tl(TCG_COND_LEU, cpu_sr_f, cpu_R[ra], cpu_R[rb]);
break;
case 0xa: /* l.sfgts */
LOG_DIS("l.sfgts r%d, r%d\n", ra, rb);
- tcg_gen_setcond_tl(TCG_COND_GT, env_btaken, cpu_R[ra], cpu_R[rb]);
+ tcg_gen_setcond_tl(TCG_COND_GT, cpu_sr_f, cpu_R[ra], cpu_R[rb]);
break;
case 0xb: /* l.sfges */
LOG_DIS("l.sfges r%d, r%d\n", ra, rb);
- tcg_gen_setcond_tl(TCG_COND_GE, env_btaken, cpu_R[ra], cpu_R[rb]);
+ tcg_gen_setcond_tl(TCG_COND_GE, cpu_sr_f, cpu_R[ra], cpu_R[rb]);
break;
case 0xc: /* l.sflts */
LOG_DIS("l.sflts r%d, r%d\n", ra, rb);
- tcg_gen_setcond_tl(TCG_COND_LT, env_btaken, cpu_R[ra], cpu_R[rb]);
+ tcg_gen_setcond_tl(TCG_COND_LT, cpu_sr_f, cpu_R[ra], cpu_R[rb]);
break;
case 0xd: /* l.sfles */
LOG_DIS("l.sfles r%d, r%d\n", ra, rb);
- tcg_gen_setcond_tl(TCG_COND_LE, env_btaken, cpu_R[ra], cpu_R[rb]);
+ tcg_gen_setcond_tl(TCG_COND_LE, cpu_sr_f, cpu_R[ra], cpu_R[rb]);
break;
default:
gen_illegal_exception(dc);
break;
}
- wb_SR_F();
}
static void dec_compi(DisasContext *dc, uint32_t insn)
@@ -1058,65 +1039,63 @@ static void dec_compi(DisasContext *dc, uint32_t insn)
ra = extract32(insn, 16, 5);
I16 = extract32(insn, 0, 16);
- tcg_gen_movi_i32(env_btaken, 0x0);
I16 = sign_extend(I16, 16);
switch (op0) {
case 0x0: /* l.sfeqi */
LOG_DIS("l.sfeqi r%d, %d\n", ra, I16);
- tcg_gen_setcondi_tl(TCG_COND_EQ, env_btaken, cpu_R[ra], I16);
+ tcg_gen_setcondi_tl(TCG_COND_EQ, cpu_sr_f, cpu_R[ra], I16);
break;
case 0x1: /* l.sfnei */
LOG_DIS("l.sfnei r%d, %d\n", ra, I16);
- tcg_gen_setcondi_tl(TCG_COND_NE, env_btaken, cpu_R[ra], I16);
+ tcg_gen_setcondi_tl(TCG_COND_NE, cpu_sr_f, cpu_R[ra], I16);
break;
case 0x2: /* l.sfgtui */
LOG_DIS("l.sfgtui r%d, %d\n", ra, I16);
- tcg_gen_setcondi_tl(TCG_COND_GTU, env_btaken, cpu_R[ra], I16);
+ tcg_gen_setcondi_tl(TCG_COND_GTU, cpu_sr_f, cpu_R[ra], I16);
break;
case 0x3: /* l.sfgeui */
LOG_DIS("l.sfgeui r%d, %d\n", ra, I16);
- tcg_gen_setcondi_tl(TCG_COND_GEU, env_btaken, cpu_R[ra], I16);
+ tcg_gen_setcondi_tl(TCG_COND_GEU, cpu_sr_f, cpu_R[ra], I16);
break;
case 0x4: /* l.sfltui */
LOG_DIS("l.sfltui r%d, %d\n", ra, I16);
- tcg_gen_setcondi_tl(TCG_COND_LTU, env_btaken, cpu_R[ra], I16);
+ tcg_gen_setcondi_tl(TCG_COND_LTU, cpu_sr_f, cpu_R[ra], I16);
break;
case 0x5: /* l.sfleui */
LOG_DIS("l.sfleui r%d, %d\n", ra, I16);
- tcg_gen_setcondi_tl(TCG_COND_LEU, env_btaken, cpu_R[ra], I16);
+ tcg_gen_setcondi_tl(TCG_COND_LEU, cpu_sr_f, cpu_R[ra], I16);
break;
case 0xa: /* l.sfgtsi */
LOG_DIS("l.sfgtsi r%d, %d\n", ra, I16);
- tcg_gen_setcondi_tl(TCG_COND_GT, env_btaken, cpu_R[ra], I16);
+ tcg_gen_setcondi_tl(TCG_COND_GT, cpu_sr_f, cpu_R[ra], I16);
break;
case 0xb: /* l.sfgesi */
LOG_DIS("l.sfgesi r%d, %d\n", ra, I16);
- tcg_gen_setcondi_tl(TCG_COND_GE, env_btaken, cpu_R[ra], I16);
+ tcg_gen_setcondi_tl(TCG_COND_GE, cpu_sr_f, cpu_R[ra], I16);
break;
case 0xc: /* l.sfltsi */
LOG_DIS("l.sfltsi r%d, %d\n", ra, I16);
- tcg_gen_setcondi_tl(TCG_COND_LT, env_btaken, cpu_R[ra], I16);
+ tcg_gen_setcondi_tl(TCG_COND_LT, cpu_sr_f, cpu_R[ra], I16);
break;
case 0xd: /* l.sflesi */
LOG_DIS("l.sflesi r%d, %d\n", ra, I16);
- tcg_gen_setcondi_tl(TCG_COND_LE, env_btaken, cpu_R[ra], I16);
+ tcg_gen_setcondi_tl(TCG_COND_LE, cpu_sr_f, cpu_R[ra], I16);
break;
default:
gen_illegal_exception(dc);
break;
}
- wb_SR_F();
}
static void dec_sys(DisasContext *dc, uint32_t insn)
@@ -1249,32 +1228,32 @@ static void dec_float(DisasContext *dc, uint32_t insn)
case 0x08: /* lf.sfeq.s */
LOG_DIS("lf.sfeq.s r%d, r%d\n", ra, rb);
- gen_helper_float_eq_s(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
+ gen_helper_float_eq_s(cpu_sr_f, cpu_env, cpu_R[ra], cpu_R[rb]);
break;
case 0x09: /* lf.sfne.s */
LOG_DIS("lf.sfne.s r%d, r%d\n", ra, rb);
- gen_helper_float_ne_s(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
+ gen_helper_float_ne_s(cpu_sr_f, cpu_env, cpu_R[ra], cpu_R[rb]);
break;
case 0x0a: /* lf.sfgt.s */
LOG_DIS("lf.sfgt.s r%d, r%d\n", ra, rb);
- gen_helper_float_gt_s(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
+ gen_helper_float_gt_s(cpu_sr_f, cpu_env, cpu_R[ra], cpu_R[rb]);
break;
case 0x0b: /* lf.sfge.s */
LOG_DIS("lf.sfge.s r%d, r%d\n", ra, rb);
- gen_helper_float_ge_s(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
+ gen_helper_float_ge_s(cpu_sr_f, cpu_env, cpu_R[ra], cpu_R[rb]);
break;
case 0x0c: /* lf.sflt.s */
LOG_DIS("lf.sflt.s r%d, r%d\n", ra, rb);
- gen_helper_float_lt_s(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
+ gen_helper_float_lt_s(cpu_sr_f, cpu_env, cpu_R[ra], cpu_R[rb]);
break;
case 0x0d: /* lf.sfle.s */
LOG_DIS("lf.sfle.s r%d, r%d\n", ra, rb);
- gen_helper_float_le_s(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
+ gen_helper_float_le_s(cpu_sr_f, cpu_env, cpu_R[ra], cpu_R[rb]);
break;
/* not used yet, open it when we need or64. */
@@ -1335,37 +1314,37 @@ static void dec_float(DisasContext *dc, uint32_t insn)
case 0x18: lf.sfeq.d
LOG_DIS("lf.sfeq.d r%d, r%d\n", ra, rb);
check_of64s(dc);
- gen_helper_float_eq_d(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
+ gen_helper_float_eq_d(cpu_sr_f, cpu_env, cpu_R[ra], cpu_R[rb]);
break;
case 0x1a: lf.sfgt.d
LOG_DIS("lf.sfgt.d r%d, r%d\n", ra, rb);
check_of64s(dc);
- gen_helper_float_gt_d(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
+ gen_helper_float_gt_d(cpu_sr_f, cpu_env, cpu_R[ra], cpu_R[rb]);
break;
case 0x1b: lf.sfge.d
LOG_DIS("lf.sfge.d r%d, r%d\n", ra, rb);
check_of64s(dc);
- gen_helper_float_ge_d(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
+ gen_helper_float_ge_d(cpu_sr_f, cpu_env, cpu_R[ra], cpu_R[rb]);
break;
case 0x19: lf.sfne.d
LOG_DIS("lf.sfne.d r%d, r%d\n", ra, rb);
check_of64s(dc);
- gen_helper_float_ne_d(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
+ gen_helper_float_ne_d(cpu_sr_f, cpu_env, cpu_R[ra], cpu_R[rb]);
break;
case 0x1c: lf.sflt.d
LOG_DIS("lf.sflt.d r%d, r%d\n", ra, rb);
check_of64s(dc);
- gen_helper_float_lt_d(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
+ gen_helper_float_lt_d(cpu_sr_f, cpu_env, cpu_R[ra], cpu_R[rb]);
break;
case 0x1d: lf.sfle.d
LOG_DIS("lf.sfle.d r%d, r%d\n", ra, rb);
check_of64s(dc);
- gen_helper_float_le_d(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
+ gen_helper_float_le_d(cpu_sr_f, cpu_env, cpu_R[ra], cpu_R[rb]);
break;
#endif*/
@@ -1373,7 +1352,6 @@ static void dec_float(DisasContext *dc, uint32_t insn)
gen_illegal_exception(dc);
break;
}
- wb_SR_F();
}
static void disas_openrisc_insn(DisasContext *dc, OpenRISCCPU *cpu)
--
2.4.3
