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| author | Thomas Huth <thuth@linux.vnet.ibm.com> | 2015-02-12 18:09:31 +0100 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2015-02-18 09:37:15 +0100 |
| commit | c3edd62851098e6417786193ed9e9341781fcf57 (patch) | |
| tree | 5427b75e81bffb9104a30594161cad92664bf707 /target-s390x/cpu.h | |
| parent | 801cdd355f8bc578f1d02462a91313959e55bee7 (diff) | |
s390x/mmu: Add function for accessing guest memory
According to the POP specification, the parameter blocks of various
functions like the IO instructions are accessed with logical addresses.
Thus we need a function that can read or write a buffer from/to the
guest's logical address space.
This patch now provides a function that can be used to access virtual
guest memory by using the mmu_translate function of QEMU to convert
the virtual addresses to physical.
Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'target-s390x/cpu.h')
| -rw-r--r-- | target-s390x/cpu.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/target-s390x/cpu.h b/target-s390x/cpu.h index f8cea308b6..a9ab587627 100644 --- a/target-s390x/cpu.h +++ b/target-s390x/cpu.h @@ -287,6 +287,7 @@ typedef struct CPUS390XState { #define FLAG_MASK_32 0x00001000 /* Control register 0 bits */ +#define CR0_LOWPROT 0x0000000010000000ULL #define CR0_EDAT 0x0000000000800000ULL static inline int cpu_mmu_index (CPUS390XState *env) @@ -897,6 +898,16 @@ int sclp_service_call(CPUS390XState *env, uint64_t sccb, uint32_t code); uint32_t calc_cc(CPUS390XState *env, uint32_t cc_op, uint64_t src, uint64_t dst, uint64_t vr); +int s390_cpu_virt_mem_rw(S390CPU *cpu, vaddr laddr, void *hostbuf, int len, + bool is_write); + +#define s390_cpu_virt_mem_read(cpu, laddr, dest, len) \ + s390_cpu_virt_mem_rw(cpu, laddr, dest, len, false) +#define s390_cpu_virt_mem_write(cpu, laddr, dest, len) \ + s390_cpu_virt_mem_rw(cpu, laddr, dest, len, true) +#define s390_cpu_virt_mem_check_write(cpu, laddr, len) \ + s390_cpu_virt_mem_rw(cpu, laddr, NULL, len, true) + /* The value of the TOD clock for 1.1.1970. */ #define TOD_UNIX_EPOCH 0x7d91048bca000000ULL |