From mboxrd@z Thu Jan 1 00:00:00 1970 From: Brijesh Singh Subject: [PATCH v6 03/23] exec: add debug version of physical memory read and write API Date: Mon, 29 Jan 2018 11:41:12 -0600 Message-ID: <20180129174132.108925-4-brijesh.singh@amd.com> References: <20180129174132.108925-1-brijesh.singh@amd.com> Mime-Version: 1.0 Content-Type: text/plain Cc: kvm@vger.kernel.org, Paolo Bonzini , Tom Lendacky , Peter Maydell , Richard Henderson , "Edgar E. Iglesias" , "Dr. David Alan Gilbert" , Eduardo Habkost , Stefan Hajnoczi , Eric Blake , "Michael S. Tsirkin" , "Daniel P . Berrange" , Brijesh Singh , Peter Crosthwaite , Richard Henderson To: qemu-devel@nongnu.org Return-path: Received: from mail-dm3nam03on0060.outbound.protection.outlook.com ([104.47.41.60]:15322 "EHLO NAM03-DM3-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751357AbeA2Rly (ORCPT ); Mon, 29 Jan 2018 12:41:54 -0500 In-Reply-To: <20180129174132.108925-1-brijesh.singh@amd.com> Sender: kvm-owner@vger.kernel.org List-ID: Adds the following new APIs - cpu_physical_memory_read_debug - cpu_physical_memory_write_debug - cpu_physical_memory_rw_debug - ldl_phys_debug - ldq_phys_debug Cc: Paolo Bonzini Cc: Peter Crosthwaite Cc: Richard Henderson Signed-off-by: Brijesh Singh Reviewed-by: Paolo Bonzini --- exec.c | 41 +++++++++++++++++++++++++++++++++++++++++ include/exec/cpu-common.h | 15 +++++++++++++++ 2 files changed, 56 insertions(+) diff --git a/exec.c b/exec.c index 1919052b7385..49dabdbeecbd 100644 --- a/exec.c +++ b/exec.c @@ -3610,6 +3610,47 @@ void address_space_cache_destroy(MemoryRegionCache *cache) #define RCU_READ_UNLOCK() rcu_read_unlock() #include "memory_ldst.inc.c" +uint32_t ldl_phys_debug(CPUState *cpu, hwaddr addr) +{ + MemTxAttrs attrs; + int asidx = cpu_asidx_from_attrs(cpu, attrs); + uint32_t val; + + /* set debug attrs to indicate memory access is from the debugger */ + attrs.debug = 1; + + cpu_physical_memory_rw_internal(cpu->cpu_ases[asidx].as, + addr, (void *) &val, + 4, attrs, READ_DATA); + return tswap32(val); +} + +uint64_t ldq_phys_debug(CPUState *cpu, hwaddr addr) +{ + MemTxAttrs attrs; + int asidx = cpu_asidx_from_attrs(cpu, attrs); + uint64_t val; + + /* set debug attrs to indicate memory access is from the debugger */ + attrs.debug = 1; + + cpu_physical_memory_rw_internal(cpu->cpu_ases[asidx].as, + addr, (void *) &val, + 8, attrs, READ_DATA); + return val; +} + +void cpu_physical_memory_rw_debug(hwaddr addr, uint8_t *buf, + int len, int is_write) +{ + MemTxAttrs attrs; + + /* set debug attrs to indicate memory access is from the debugger */ + attrs.debug = 1; + + address_space_rw(&address_space_memory, addr, attrs, buf, len, is_write); +} + /* virtual memory access for debug (includes writing to ROM) */ int cpu_memory_rw_debug(CPUState *cpu, target_ulong addr, uint8_t *buf, int len, int is_write) diff --git a/include/exec/cpu-common.h b/include/exec/cpu-common.h index 74341b19d26a..fa01385d4f1b 100644 --- a/include/exec/cpu-common.h +++ b/include/exec/cpu-common.h @@ -77,11 +77,26 @@ size_t qemu_ram_pagesize_largest(void); void cpu_physical_memory_rw(hwaddr addr, uint8_t *buf, int len, int is_write); +void cpu_physical_memory_rw_debug(hwaddr addr, uint8_t *buf, + int len, int is_write); static inline void cpu_physical_memory_read(hwaddr addr, void *buf, int len) { cpu_physical_memory_rw(addr, buf, len, 0); } +static inline void cpu_physical_memory_read_debug(hwaddr addr, + void *buf, int len) +{ + cpu_physical_memory_rw_debug(addr, buf, len, 0); +} +static inline void cpu_physical_memory_write_debug(hwaddr addr, + const void *buf, int len) +{ + cpu_physical_memory_rw_debug(addr, (void *)buf, len, 1); +} +uint32_t ldl_phys_debug(CPUState *cpu, hwaddr addr); +uint64_t ldq_phys_debug(CPUState *cpu, hwaddr addr); + static inline void cpu_physical_memory_write(hwaddr addr, const void *buf, int len) { -- 2.9.5