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target/arm: Export arm_v7m_mrs_control

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Allow the function to be used outside of m_helper.c.
Rename with an "arm_" prefix.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: David Reiss <dreiss@meta.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230227213329.793795-13-richard.henderson@linaro.org
[rth: Split out of a larger patch]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
David Reiss 2023-02-27 11:33:27 -10:00 committed by Peter Maydell
parent e995d5cce4
commit 48688c9441
2 changed files with 6 additions and 3 deletions
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3
target/arm/internals.h
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@ -1357,6 +1357,9 @@ void arm_cpu_pauth_finalize(ARMCPU *cpu, Error **errp);
void arm_cpu_lpa2_finalize(ARMCPU *cpu, Error **errp);
#endif
/* Read the CONTROL register as the MRS instruction would. */
uint32_t arm_v7m_mrs_control(CPUARMState *env, uint32_t secure);
#ifdef CONFIG_USER_ONLY
static inline void define_cortex_a72_a57_a53_cp_reginfo(ARMCPU *cpu) { }
#else

6
target/arm/tcg/m_helper.c
View File

@ -56,7 +56,7 @@ static uint32_t v7m_mrs_xpsr(CPUARMState *env, uint32_t reg, unsigned el)
return xpsr_read(env) & mask;
}
static uint32_t v7m_mrs_control(CPUARMState *env, uint32_t secure)
uint32_t arm_v7m_mrs_control(CPUARMState *env, uint32_t secure)
{
uint32_t value = env->v7m.control[secure];
@ -93,7 +93,7 @@ uint32_t HELPER(v7m_mrs)(CPUARMState *env, uint32_t reg)
case 0 ... 7: /* xPSR sub-fields */
return v7m_mrs_xpsr(env, reg, 0);
case 20: /* CONTROL */
return v7m_mrs_control(env, 0);
return arm_v7m_mrs_control(env, 0);
default:
/* Unprivileged reads others as zero. */
return 0;
@ -2465,7 +2465,7 @@ uint32_t HELPER(v7m_mrs)(CPUARMState *env, uint32_t reg)
case 0 ... 7: /* xPSR sub-fields */
return v7m_mrs_xpsr(env, reg, el);
case 20: /* CONTROL */
return v7m_mrs_control(env, env->v7m.secure);
return arm_v7m_mrs_control(env, env->v7m.secure);
case 0x94: /* CONTROL_NS */
/*
* We have to handle this here because unprivileged Secure code