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[PATCH v8 20/22] target/arm: Rebuild hflags for M-profile
From: |
Richard Henderson |
Subject: |
[PATCH v8 20/22] target/arm: Rebuild hflags for M-profile |
Date: |
Fri, 18 Oct 2019 10:44:29 -0700 |
Continue setting, but not relying upon, env->hflags.
Reviewed-by: Alex Bennée <address@hidden>
Signed-off-by: Richard Henderson <address@hidden>
---
v7: Add rebuilds for v7m_msr and nvic_writel to v7m.ccr.
v8: Split nvic update to a new patch and generalize location.
---
target/arm/m_helper.c | 6 ++++++
target/arm/translate.c | 5 ++++-
2 files changed, 10 insertions(+), 1 deletion(-)
diff --git a/target/arm/m_helper.c b/target/arm/m_helper.c
index 27cd2f3f96..f2512e448e 100644
--- a/target/arm/m_helper.c
+++ b/target/arm/m_helper.c
@@ -494,6 +494,7 @@ void HELPER(v7m_bxns)(CPUARMState *env, uint32_t dest)
switch_v7m_security_state(env, dest & 1);
env->thumb = 1;
env->regs[15] = dest & ~1;
+ arm_rebuild_hflags(env);
}
void HELPER(v7m_blxns)(CPUARMState *env, uint32_t dest)
@@ -555,6 +556,7 @@ void HELPER(v7m_blxns)(CPUARMState *env, uint32_t dest)
switch_v7m_security_state(env, 0);
env->thumb = 1;
env->regs[15] = dest;
+ arm_rebuild_hflags(env);
}
static uint32_t *get_v7m_sp_ptr(CPUARMState *env, bool secure, bool threadmode,
@@ -895,6 +897,7 @@ static void v7m_exception_taken(ARMCPU *cpu, uint32_t lr,
bool dotailchain,
env->regs[14] = lr;
env->regs[15] = addr & 0xfffffffe;
env->thumb = addr & 1;
+ arm_rebuild_hflags(env);
}
static void v7m_update_fpccr(CPUARMState *env, uint32_t frameptr,
@@ -1765,6 +1768,7 @@ static void do_v7m_exception_exit(ARMCPU *cpu)
/* Otherwise, we have a successful exception exit. */
arm_clear_exclusive(env);
+ arm_rebuild_hflags(env);
qemu_log_mask(CPU_LOG_INT, "...successful exception return\n");
}
@@ -1837,6 +1841,7 @@ static bool do_v7m_function_return(ARMCPU *cpu)
xpsr_write(env, 0, XPSR_IT);
env->thumb = newpc & 1;
env->regs[15] = newpc & ~1;
+ arm_rebuild_hflags(env);
qemu_log_mask(CPU_LOG_INT, "...function return successful\n");
return true;
@@ -1959,6 +1964,7 @@ static bool v7m_handle_execute_nsc(ARMCPU *cpu)
switch_v7m_security_state(env, true);
xpsr_write(env, 0, XPSR_IT);
env->regs[15] += 4;
+ arm_rebuild_hflags(env);
return true;
gen_invep:
diff --git a/target/arm/translate.c b/target/arm/translate.c
index cb47cd9744..b3720cd59b 100644
--- a/target/arm/translate.c
+++ b/target/arm/translate.c
@@ -8325,7 +8325,7 @@ static bool trans_MRS_v7m(DisasContext *s, arg_MRS_v7m *a)
static bool trans_MSR_v7m(DisasContext *s, arg_MSR_v7m *a)
{
- TCGv_i32 addr, reg;
+ TCGv_i32 addr, reg, el;
if (!arm_dc_feature(s, ARM_FEATURE_M)) {
return false;
@@ -8335,6 +8335,9 @@ static bool trans_MSR_v7m(DisasContext *s, arg_MSR_v7m *a)
gen_helper_v7m_msr(cpu_env, addr, reg);
tcg_temp_free_i32(addr);
tcg_temp_free_i32(reg);
+ el = tcg_const_i32(s->current_el);
+ gen_helper_rebuild_hflags_m32(cpu_env, el);
+ tcg_temp_free_i32(el);
gen_lookup_tb(s);
return true;
}
--
2.17.1
- [PATCH v8 09/22] target/arm: Hoist XSCALE_CPAR, VECLEN, VECSTRIDE in cpu_get_tb_cpu_state, (continued)
- [PATCH v8 09/22] target/arm: Hoist XSCALE_CPAR, VECLEN, VECSTRIDE in cpu_get_tb_cpu_state, Richard Henderson, 2019/10/18
- [PATCH v8 14/22] target/arm: Hoist store to cs_base in cpu_get_tb_cpu_state, Richard Henderson, 2019/10/18
- [PATCH v8 15/22] target/arm: Add HELPER(rebuild_hflags_{a32, a64, m32}), Richard Henderson, 2019/10/18
- [PATCH v8 11/22] target/arm: Hoist computation of TBFLAG_A32.VFPEN, Richard Henderson, 2019/10/18
- [PATCH v8 12/22] target/arm: Add arm_rebuild_hflags, Richard Henderson, 2019/10/18
- [PATCH v8 13/22] target/arm: Split out arm_mmu_idx_el, Richard Henderson, 2019/10/18
- [PATCH v8 17/22] target/arm: Rebuild hflags at MSR writes, Richard Henderson, 2019/10/18
- [PATCH v8 18/22] target/arm: Rebuild hflags at CPSR writes, Richard Henderson, 2019/10/18
- [PATCH v8 16/22] target/arm: Rebuild hflags at EL changes, Richard Henderson, 2019/10/18
- [PATCH v8 19/22] target/arm: Rebuild hflags at Xscale SCTLR writes, Richard Henderson, 2019/10/18
- [PATCH v8 20/22] target/arm: Rebuild hflags for M-profile,
Richard Henderson <=
- [PATCH v8 21/22] target/arm: Rebuild hflags for M-profile NVIC, Richard Henderson, 2019/10/18
- [PATCH v8 22/22] target/arm: Rely on hflags correct in cpu_get_tb_cpu_state, Richard Henderson, 2019/10/18
- Re: [PATCH v8 00/22] target/arm: Reduce overhead of cpu_get_tb_cpu_state, Peter Maydell, 2019/10/22