diff options
Diffstat (limited to 'hw/goldfish_trace.h')
| -rw-r--r-- | hw/goldfish_trace.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/hw/goldfish_trace.h b/hw/goldfish_trace.h index 76b61a8..61d3f4f 100644 --- a/hw/goldfish_trace.h +++ b/hw/goldfish_trace.h @@ -17,6 +17,11 @@ #define CLIENT_PAGE_SIZE 4096 /* trace device registers */ + +/* The indices below all corresponds to slots that can only be accessed + * by the guest kernel. See below for indices reachable from the guest + * user-land. + */ #define TRACE_DEV_REG_SWITCH 0 #define TRACE_DEV_REG_FORK 1 #define TRACE_DEV_REG_EXECVE_PID 2 @@ -43,6 +48,22 @@ #define TRACE_DEV_REG_PRINT_NUM_HEX 62 #define TRACE_DEV_REG_STOP_EMU 90 #define TRACE_DEV_REG_ENABLE 100 + +/* NOTE: The device's second physical page is mapped to /dev/qemu_trace + * This means that if you do the following: + * + * magicPage = my_mmap("/dev/qemu_trace", ...); + * *(uint32_t*)magicPage[index] = value; + * + * The write at address magicPage+index*4 here will be seen + * by the device as a write to the i/o offset 4096 + index*4, + * i.e. (1024 + index)*4. + * + * As a consequence, any index defined below corresponds to + * location (index-1024)*4 in the mmapped page in the guest. + */ + +/* The first 64 entries are reserved for VM instrumentation */ #define TRACE_DEV_REG_METHOD_ENTRY 1024 #define TRACE_DEV_REG_METHOD_EXIT 1025 #define TRACE_DEV_REG_METHOD_EXCEPTION 1026 @@ -50,6 +71,24 @@ #define TRACE_DEV_REG_NATIVE_EXIT 1029 #define TRACE_DEV_REG_NATIVE_EXCEPTION 1030 +/* Next, QEMUD fast pipes */ +#define TRACE_DEV_PIPE_BASE 1280 /* 1024 + (64*4) */ +#define TRACE_DEV_PIPE_COMMAND (TRACE_DEV_PIPE_BASE + 0) +#define TRACE_DEV_PIPE_STATUS (TRACE_DEV_PIPE_BASE + 0) +#define TRACE_DEV_PIPE_ADDRESS (TRACE_DEV_PIPE_BASE + 1) +#define TRACE_DEV_PIPE_SIZE (TRACE_DEV_PIPE_BASE + 2) +#define TRACE_DEV_PIPE_CHANNEL (TRACE_DEV_PIPE_BASE + 3) + +/* These entries are reserved for libc instrumentation, i.e. memcheck */ +#if 0 /* see memcheck_common.h */ +#define TRACE_DEV_REG_MEMCHECK 1536 /* 1024 + (128*4) */ +#define TRACE_DEV_REG_LIBC_INIT (TRACE_DEV_REG_MEMCHECK + MEMCHECK_EVENT_LIBC_INIT) +#define TRACE_DEV_REG_MALLOC (TRACE_DEV_REG_MEMCHECK + MEMCHECK_EVENT_MALLOC) +#define TRACE_DEV_REG_FREE_PTR (TRACE_DEV_REG_MEMCHECK + MEMCHECK_EVENT_FREE_PTR) +#define TRACE_DEV_REG_QUERY_MALLOC (TRACE_DEV_REG_MEMCHECK + MEMCHECK_EVENT_QUERY_MALLOC) +#define TRACE_DEV_REG_PRINT_USER_STR (TRACE_DEV_REG_MEMCHECK + MEMCHECK_EVENT_PRINT_USER_STR) +#endif + /* the virtual trace device state */ typedef struct { struct goldfish_device dev; |