From 0debf1400c000154948e8a6fcb89c3149d4e0880 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Mon, 19 Apr 2021 18:00:55 +0200 Subject: [PATCH] target/mips: Merge do_translate_address into cpu_mips_translate_address MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Currently cpu_mips_translate_address() calls raise_mmu_exception(), and do_translate_address() calls cpu_loop_exit_restore(). This API split is dangerous, we could call cpu_mips_translate_address without returning to the main loop. As there is only one caller, it is trivial (and safer) to merge do_translate_address() back to cpu_mips_translate_address(). Reported-by: Richard Henderson Suggested-by: Richard Henderson Reviewed-by: Richard Henderson Signed-off-by: Philippe Mathieu-Daudé Message-Id: <20210428170410.479308-10-f4bug@amsat.org> --- target/mips/internal.h | 2 +- target/mips/op_helper.c | 20 ++------------------ target/mips/tlb_helper.c | 11 ++++++----- 3 files changed, 9 insertions(+), 24 deletions(-) diff --git a/target/mips/internal.h b/target/mips/internal.h index 04f4b3d661..e93e057bec 100644 --- a/target/mips/internal.h +++ b/target/mips/internal.h @@ -148,7 +148,7 @@ void mips_cpu_do_transaction_failed(CPUState *cs, hwaddr physaddr, int mmu_idx, MemTxAttrs attrs, MemTxResult response, uintptr_t retaddr); hwaddr cpu_mips_translate_address(CPUMIPSState *env, target_ulong address, - MMUAccessType access_type); + MMUAccessType access_type, uintptr_t retaddr); #endif #define cpu_signal_handler cpu_mips_signal_handler diff --git a/target/mips/op_helper.c b/target/mips/op_helper.c index 222a0d7c7b..61e68cc8be 100644 --- a/target/mips/op_helper.c +++ b/target/mips/op_helper.c @@ -287,23 +287,6 @@ target_ulong helper_rotx(target_ulong rs, uint32_t shift, uint32_t shiftx, #ifndef CONFIG_USER_ONLY -static inline hwaddr do_translate_address(CPUMIPSState *env, - target_ulong address, - MMUAccessType access_type, - uintptr_t retaddr) -{ - hwaddr paddr; - CPUState *cs = env_cpu(env); - - paddr = cpu_mips_translate_address(env, address, access_type); - - if (paddr == -1LL) { - cpu_loop_exit_restore(cs, retaddr); - } else { - return paddr; - } -} - #define HELPER_LD_ATOMIC(name, insn, almask, do_cast) \ target_ulong helper_##name(CPUMIPSState *env, target_ulong arg, int mem_idx) \ { \ @@ -313,7 +296,8 @@ target_ulong helper_##name(CPUMIPSState *env, target_ulong arg, int mem_idx) \ } \ do_raise_exception(env, EXCP_AdEL, GETPC()); \ } \ - env->CP0_LLAddr = do_translate_address(env, arg, MMU_DATA_LOAD, GETPC()); \ + env->CP0_LLAddr = cpu_mips_translate_address(env, arg, MMU_DATA_LOAD, \ + GETPC()); \ env->lladdr = arg; \ env->llval = do_cast cpu_##insn##_mmuidx_ra(env, arg, mem_idx, GETPC()); \ return env->llval; \ diff --git a/target/mips/tlb_helper.c b/target/mips/tlb_helper.c index 8d3ea49780..1ffdc1f830 100644 --- a/target/mips/tlb_helper.c +++ b/target/mips/tlb_helper.c @@ -904,21 +904,22 @@ bool mips_cpu_tlb_fill(CPUState *cs, vaddr address, int size, #ifndef CONFIG_USER_ONLY hwaddr cpu_mips_translate_address(CPUMIPSState *env, target_ulong address, - MMUAccessType access_type) + MMUAccessType access_type, uintptr_t retaddr) { hwaddr physical; int prot; int ret = 0; + CPUState *cs = env_cpu(env); /* data access */ ret = get_physical_address(env, &physical, &prot, address, access_type, cpu_mmu_index(env, false)); - if (ret != TLBRET_MATCH) { - raise_mmu_exception(env, address, access_type, ret); - return -1LL; - } else { + if (ret == TLBRET_MATCH) { return physical; } + + raise_mmu_exception(env, address, access_type, ret); + cpu_loop_exit_restore(cs, retaddr); } static void set_hflags_for_handler(CPUMIPSState *env)