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[Qemu-devel] [PATCH v6 03/23] exec: add debug version of physical memory
From: |
Brijesh Singh |
Subject: |
[Qemu-devel] [PATCH v6 03/23] exec: add debug version of physical memory read and write API |
Date: |
Mon, 29 Jan 2018 11:41:12 -0600 |
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 <address@hidden>
Cc: Peter Crosthwaite <address@hidden>
Cc: Richard Henderson <address@hidden>
Signed-off-by: Brijesh Singh <address@hidden>
Reviewed-by: Paolo Bonzini <address@hidden>
---
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
[Qemu-devel] [PATCH v6 04/23] monitor/i386: use debug APIs when accessing guest memory, Brijesh Singh, 2018/01/29
[Qemu-devel] [PATCH v6 06/23] machine: add -memory-encryption property, Brijesh Singh, 2018/01/29
[Qemu-devel] [PATCH v6 08/23] docs: add AMD Secure Encrypted Virtualization (SEV), Brijesh Singh, 2018/01/29