[PULL 23/66] target/mips: Move common helpers from helper.c to cpu.c

The rest of helper.c is TLB related. Extract the non TLB specific functions to cpu.c, so we can rename helper.c as tlb_helper.c in the next commit. Signed-off-by: Philippe Mathieu-Daudé <f4bug(a)amsat.org&gt; Reviewed-by: Richard Henderson <richard.henderson(a)linaro.org&gt; Message-Id: <20201214183739.500368-6-f4bug(a)amsat.org&gt; --- target/mips/internal.h | 2 + target/mips/cpu.c | 215 +++++++++++++++++++++++++++++++++++++++-- target/mips/helper.c | 201 -------------------------------------- 3 files changed, 211 insertions(+), 207 deletions(-) diff --git a/target/mips/internal.h b/target/mips/internal.h index f159187b246..ae1181d2029 100644 --- a/target/mips/internal.h +++ b/target/mips/internal.h @@ -399,6 +399,8 @@ void sync_c0_status(CPUMIPSState *env, CPUMIPSState *cpu, int tc); void cpu_mips_store_status(CPUMIPSState *env, target_ulong val); void cpu_mips_store_cause(CPUMIPSState *env, target_ulong val); +const char *mips_exception_name(int32_t exception); + void QEMU_NORETURN do_raise_exception_err(CPUMIPSState *env, uint32_t exception, int error_code, uintptr_t pc); diff --git a/target/mips/cpu.c b/target/mips/cpu.c index 4a251e2d3e8..26b4c3e9cd5 100644 --- a/target/mips/cpu.c +++ b/target/mips/cpu.c @@ -34,6 +34,215 @@ #include "hw/semihosting/semihost.h" #include "qapi/qapi-commands-machine-target.h" +#if !defined(CONFIG_USER_ONLY) + +/* Called for updates to CP0_Status. */ +void sync_c0_status(CPUMIPSState *env, CPUMIPSState *cpu, int tc) +{ + int32_t tcstatus, *tcst; + uint32_t v = cpu->CP0_Status; + uint32_t cu, mx, asid, ksu; + uint32_t mask = ((1 << CP0TCSt_TCU3) + | (1 << CP0TCSt_TCU2) + | (1 << CP0TCSt_TCU1) + | (1 << CP0TCSt_TCU0) + | (1 << CP0TCSt_TMX) + | (3 << CP0TCSt_TKSU) + | (0xff << CP0TCSt_TASID)); + + cu = (v >> CP0St_CU0) & 0xf; + mx = (v >> CP0St_MX) & 0x1; + ksu = (v >> CP0St_KSU) & 0x3; + asid = env->CP0_EntryHi & env->CP0_EntryHi_ASID_mask; + + tcstatus = cu << CP0TCSt_TCU0; + tcstatus |= mx << CP0TCSt_TMX; + tcstatus |= ksu << CP0TCSt_TKSU; + tcstatus |= asid; + + if (tc == cpu->current_tc) { + tcst = &cpu->active_tc.CP0_TCStatus; + } else { + tcst = &cpu->tcs[tc].CP0_TCStatus; + } + + *tcst &= ~mask; + *tcst |= tcstatus; + compute_hflags(cpu); +} + +void cpu_mips_store_status(CPUMIPSState *env, target_ulong val) +{ + uint32_t mask = env->CP0_Status_rw_bitmask; + target_ulong old = env->CP0_Status; + + if (env->insn_flags & ISA_MIPS_R6) { + bool has_supervisor = extract32(mask, CP0St_KSU, 2) == 0x3; +#if defined(TARGET_MIPS64) + uint32_t ksux = (1 << CP0St_KX) & val; + ksux |= (ksux >> 1) & val; /* KX = 0 forces SX to be 0 */ + ksux |= (ksux >> 1) & val; /* SX = 0 forces UX to be 0 */ + val = (val & ~(7 << CP0St_UX)) | ksux; +#endif + if (has_supervisor && extract32(val, CP0St_KSU, 2) == 0x3) { + mask &= ~(3 << CP0St_KSU); + } + mask &= ~(((1 << CP0St_SR) | (1 << CP0St_NMI)) & val); + } + + env->CP0_Status = (old & ~mask) | (val & mask); +#if defined(TARGET_MIPS64) + if ((env->CP0_Status ^ old) & (old & (7 << CP0St_UX))) { + /* Access to at least one of the 64-bit segments has been disabled */ + tlb_flush(env_cpu(env)); + } +#endif + if (ase_mt_available(env)) { + sync_c0_status(env, env, env->current_tc); + } else { + compute_hflags(env); + } +} + +void cpu_mips_store_cause(CPUMIPSState *env, target_ulong val) +{ + uint32_t mask = 0x00C00300; + uint32_t old = env->CP0_Cause; + int i; + + if (env->insn_flags & ISA_MIPS_R2) { + mask |= 1 << CP0Ca_DC; + } + if (env->insn_flags & ISA_MIPS_R6) { + mask &= ~((1 << CP0Ca_WP) & val); + } + + env->CP0_Cause = (env->CP0_Cause & ~mask) | (val & mask); + + if ((old ^ env->CP0_Cause) & (1 << CP0Ca_DC)) { + if (env->CP0_Cause & (1 << CP0Ca_DC)) { + cpu_mips_stop_count(env); + } else { + cpu_mips_start_count(env); + } + } + + /* Set/reset software interrupts */ + for (i = 0 ; i < 2 ; i++) { + if ((old ^ env->CP0_Cause) & (1 << (CP0Ca_IP + i))) { + cpu_mips_soft_irq(env, i, env->CP0_Cause & (1 << (CP0Ca_IP + i))); + } + } +} + +#endif /* !CONFIG_USER_ONLY */ + +static const char * const excp_names[EXCP_LAST + 1] = { + [EXCP_RESET] = "reset", + [EXCP_SRESET] = "soft reset", + [EXCP_DSS] = "debug single step", + [EXCP_DINT] = "debug interrupt", + [EXCP_NMI] = "non-maskable interrupt", + [EXCP_MCHECK] = "machine check", + [EXCP_EXT_INTERRUPT] = "interrupt", + [EXCP_DFWATCH] = "deferred watchpoint", + [EXCP_DIB] = "debug instruction breakpoint", + [EXCP_IWATCH] = "instruction fetch watchpoint", + [EXCP_AdEL] = "address error load", + [EXCP_AdES] = "address error store", + [EXCP_TLBF] = "TLB refill", + [EXCP_IBE] = "instruction bus error", + [EXCP_DBp] = "debug breakpoint", + [EXCP_SYSCALL] = "syscall", + [EXCP_BREAK] = "break", + [EXCP_CpU] = "coprocessor unusable", + [EXCP_RI] = "reserved instruction", + [EXCP_OVERFLOW] = "arithmetic overflow", + [EXCP_TRAP] = "trap", + [EXCP_FPE] = "floating point", + [EXCP_DDBS] = "debug data break store", + [EXCP_DWATCH] = "data watchpoint", + [EXCP_LTLBL] = "TLB modify", + [EXCP_TLBL] = "TLB load", + [EXCP_TLBS] = "TLB store", + [EXCP_DBE] = "data bus error", + [EXCP_DDBL] = "debug data break load", + [EXCP_THREAD] = "thread", + [EXCP_MDMX] = "MDMX", + [EXCP_C2E] = "precise coprocessor 2", + [EXCP_CACHE] = "cache error", + [EXCP_TLBXI] = "TLB execute-inhibit", + [EXCP_TLBRI] = "TLB read-inhibit", + [EXCP_MSADIS] = "MSA disabled", + [EXCP_MSAFPE] = "MSA floating point", +}; + +const char *mips_exception_name(int32_t exception) +{ + if (exception < 0 || exception > EXCP_LAST) { + return "unknown"; + } + return excp_names[exception]; +} + +void cpu_set_exception_base(int vp_index, target_ulong address) +{ + MIPSCPU *vp = MIPS_CPU(qemu_get_cpu(vp_index)); + vp->env.exception_base = address; +} + +target_ulong exception_resume_pc(CPUMIPSState *env) +{ + target_ulong bad_pc; + target_ulong isa_mode; + + isa_mode = !!(env->hflags & MIPS_HFLAG_M16); + bad_pc = env->active_tc.PC | isa_mode; + if (env->hflags & MIPS_HFLAG_BMASK) { + /* + * If the exception was raised from a delay slot, come back to + * the jump. + */ + bad_pc -= (env->hflags & MIPS_HFLAG_B16 ? 2 : 4); + } + + return bad_pc; +} + +bool mips_cpu_exec_interrupt(CPUState *cs, int interrupt_request) +{ + if (interrupt_request & CPU_INTERRUPT_HARD) { + MIPSCPU *cpu = MIPS_CPU(cs); + CPUMIPSState *env = &cpu->env; + + if (cpu_mips_hw_interrupts_enabled(env) && + cpu_mips_hw_interrupts_pending(env)) { + /* Raise it */ + cs->exception_index = EXCP_EXT_INTERRUPT; + env->error_code = 0; + mips_cpu_do_interrupt(cs); + return true; + } + } + return false; +} + +void QEMU_NORETURN do_raise_exception_err(CPUMIPSState *env, + uint32_t exception, + int error_code, + uintptr_t pc) +{ + CPUState *cs = env_cpu(env); + + qemu_log_mask(CPU_LOG_INT, "%s: %d (%s) %d\n", + __func__, exception, mips_exception_name(exception), + error_code); + cs->exception_index = exception; + env->error_code = error_code; + + cpu_loop_exit_restore(cs, pc); +} + static void mips_cpu_set_pc(CPUState *cs, vaddr value) { MIPSCPU *cpu = MIPS_CPU(cs); @@ -587,9 +796,3 @@ bool cpu_type_supports_cps_smp(const char *cpu_type) const MIPSCPUClass *mcc = MIPS_CPU_CLASS(object_class_by_name(cpu_type)); return (mcc->cpu_def->CP0_Config3 & (1 << CP0C3_CMGCR)) != 0; } - -void cpu_set_exception_base(int vp_index, target_ulong address) -{ - MIPSCPU *vp = MIPS_CPU(qemu_get_cpu(vp_index)); - vp->env.exception_base = address; -} diff --git a/target/mips/helper.c b/target/mips/helper.c index cfb6d82fd33..68804b84b15 100644 --- a/target/mips/helper.c +++ b/target/mips/helper.c @@ -357,105 +357,6 @@ void cpu_mips_tlb_flush(CPUMIPSState *env) env->tlb->tlb_in_use = env->tlb->nb_tlb; } -/* Called for updates to CP0_Status. */ -void sync_c0_status(CPUMIPSState *env, CPUMIPSState *cpu, int tc) -{ - int32_t tcstatus, *tcst; - uint32_t v = cpu->CP0_Status; - uint32_t cu, mx, asid, ksu; - uint32_t mask = ((1 << CP0TCSt_TCU3) - | (1 << CP0TCSt_TCU2) - | (1 << CP0TCSt_TCU1) - | (1 << CP0TCSt_TCU0) - | (1 << CP0TCSt_TMX) - | (3 << CP0TCSt_TKSU) - | (0xff << CP0TCSt_TASID)); - - cu = (v >> CP0St_CU0) & 0xf; - mx = (v >> CP0St_MX) & 0x1; - ksu = (v >> CP0St_KSU) & 0x3; - asid = env->CP0_EntryHi & env->CP0_EntryHi_ASID_mask; - - tcstatus = cu << CP0TCSt_TCU0; - tcstatus |= mx << CP0TCSt_TMX; - tcstatus |= ksu << CP0TCSt_TKSU; - tcstatus |= asid; - - if (tc == cpu->current_tc) { - tcst = &cpu->active_tc.CP0_TCStatus; - } else { - tcst = &cpu->tcs[tc].CP0_TCStatus; - } - - *tcst &= ~mask; - *tcst |= tcstatus; - compute_hflags(cpu); -} - -void cpu_mips_store_status(CPUMIPSState *env, target_ulong val) -{ - uint32_t mask = env->CP0_Status_rw_bitmask; - target_ulong old = env->CP0_Status; - - if (env->insn_flags & ISA_MIPS_R6) { - bool has_supervisor = extract32(mask, CP0St_KSU, 2) == 0x3; -#if defined(TARGET_MIPS64) - uint32_t ksux = (1 << CP0St_KX) & val; - ksux |= (ksux >> 1) & val; /* KX = 0 forces SX to be 0 */ - ksux |= (ksux >> 1) & val; /* SX = 0 forces UX to be 0 */ - val = (val & ~(7 << CP0St_UX)) | ksux; -#endif - if (has_supervisor && extract32(val, CP0St_KSU, 2) == 0x3) { - mask &= ~(3 << CP0St_KSU); - } - mask &= ~(((1 << CP0St_SR) | (1 << CP0St_NMI)) & val); - } - - env->CP0_Status = (old & ~mask) | (val & mask); -#if defined(TARGET_MIPS64) - if ((env->CP0_Status ^ old) & (old & (7 << CP0St_UX))) { - /* Access to at least one of the 64-bit segments has been disabled */ - tlb_flush(env_cpu(env)); - } -#endif - if (ase_mt_available(env)) { - sync_c0_status(env, env, env->current_tc); - } else { - compute_hflags(env); - } -} - -void cpu_mips_store_cause(CPUMIPSState *env, target_ulong val) -{ - uint32_t mask = 0x00C00300; - uint32_t old = env->CP0_Cause; - int i; - - if (env->insn_flags & ISA_MIPS_R2) { - mask |= 1 << CP0Ca_DC; - } - if (env->insn_flags & ISA_MIPS_R6) { - mask &= ~((1 << CP0Ca_WP) & val); - } - - env->CP0_Cause = (env->CP0_Cause & ~mask) | (val & mask); - - if ((old ^ env->CP0_Cause) & (1 << CP0Ca_DC)) { - if (env->CP0_Cause & (1 << CP0Ca_DC)) { - cpu_mips_stop_count(env); - } else { - cpu_mips_start_count(env); - } - } - - /* Set/reset software interrupts */ - for (i = 0 ; i < 2 ; i++) { - if ((old ^ env->CP0_Cause) & (1 << (CP0Ca_IP + i))) { - cpu_mips_soft_irq(env, i, env->CP0_Cause & (1 << (CP0Ca_IP + i))); - } - } -} - #endif /* !CONFIG_USER_ONLY */ static void raise_mmu_exception(CPUMIPSState *env, target_ulong address, @@ -977,75 +878,7 @@ hwaddr cpu_mips_translate_address(CPUMIPSState *env, target_ulong address, return physical; } } -#endif /* !CONFIG_USER_ONLY */ -static const char * const excp_names[EXCP_LAST + 1] = { - [EXCP_RESET] = "reset", - [EXCP_SRESET] = "soft reset", - [EXCP_DSS] = "debug single step", - [EXCP_DINT] = "debug interrupt", - [EXCP_NMI] = "non-maskable interrupt", - [EXCP_MCHECK] = "machine check", - [EXCP_EXT_INTERRUPT] = "interrupt", - [EXCP_DFWATCH] = "deferred watchpoint", - [EXCP_DIB] = "debug instruction breakpoint", - [EXCP_IWATCH] = "instruction fetch watchpoint", - [EXCP_AdEL] = "address error load", - [EXCP_AdES] = "address error store", - [EXCP_TLBF] = "TLB refill", - [EXCP_IBE] = "instruction bus error", - [EXCP_DBp] = "debug breakpoint", - [EXCP_SYSCALL] = "syscall", - [EXCP_BREAK] = "break", - [EXCP_CpU] = "coprocessor unusable", - [EXCP_RI] = "reserved instruction", - [EXCP_OVERFLOW] = "arithmetic overflow", - [EXCP_TRAP] = "trap", - [EXCP_FPE] = "floating point", - [EXCP_DDBS] = "debug data break store", - [EXCP_DWATCH] = "data watchpoint", - [EXCP_LTLBL] = "TLB modify", - [EXCP_TLBL] = "TLB load", - [EXCP_TLBS] = "TLB store", - [EXCP_DBE] = "data bus error", - [EXCP_DDBL] = "debug data break load", - [EXCP_THREAD] = "thread", - [EXCP_MDMX] = "MDMX", - [EXCP_C2E] = "precise coprocessor 2", - [EXCP_CACHE] = "cache error", - [EXCP_TLBXI] = "TLB execute-inhibit", - [EXCP_TLBRI] = "TLB read-inhibit", - [EXCP_MSADIS] = "MSA disabled", - [EXCP_MSAFPE] = "MSA floating point", -}; - -static const char *mips_exception_name(int32_t exception) -{ - if (exception < 0 || exception > EXCP_LAST) { - return "unknown"; - } - return excp_names[exception]; -} - -target_ulong exception_resume_pc(CPUMIPSState *env) -{ - target_ulong bad_pc; - target_ulong isa_mode; - - isa_mode = !!(env->hflags & MIPS_HFLAG_M16); - bad_pc = env->active_tc.PC | isa_mode; - if (env->hflags & MIPS_HFLAG_BMASK) { - /* - * If the exception was raised from a delay slot, come back to - * the jump. - */ - bad_pc -= (env->hflags & MIPS_HFLAG_B16 ? 2 : 4); - } - - return bad_pc; -} - -#if !defined(CONFIG_USER_ONLY) static void set_hflags_for_handler(CPUMIPSState *env) { /* Exception handlers are entered in 32-bit mode. */ @@ -1400,24 +1233,6 @@ void mips_cpu_do_interrupt(CPUState *cs) cs->exception_index = EXCP_NONE; } -bool mips_cpu_exec_interrupt(CPUState *cs, int interrupt_request) -{ - if (interrupt_request & CPU_INTERRUPT_HARD) { - MIPSCPU *cpu = MIPS_CPU(cs); - CPUMIPSState *env = &cpu->env; - - if (cpu_mips_hw_interrupts_enabled(env) && - cpu_mips_hw_interrupts_pending(env)) { - /* Raise it */ - cs->exception_index = EXCP_EXT_INTERRUPT; - env->error_code = 0; - mips_cpu_do_interrupt(cs); - return true; - } - } - return false; -} - #if !defined(CONFIG_USER_ONLY) void r4k_invalidate_tlb(CPUMIPSState *env, int idx, int use_extra) { @@ -1484,19 +1299,3 @@ void r4k_invalidate_tlb(CPUMIPSState *env, int idx, int use_extra) } } #endif /* !CONFIG_USER_ONLY */ - -void QEMU_NORETURN do_raise_exception_err(CPUMIPSState *env, - uint32_t exception, - int error_code, - uintptr_t pc) -{ - CPUState *cs = env_cpu(env); - - qemu_log_mask(CPU_LOG_INT, "%s: %d (%s) %d\n", - __func__, exception, mips_exception_name(exception), - error_code); - cs->exception_index = exception; - env->error_code = error_code; - - cpu_loop_exit_restore(cs, pc); -} -- 2.26.2