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Ignore:
Timestamp:
2010-02-12T14:09:22Z (12 years ago)
Author:
Lukas Mejdrech <lukasmejdrech@…>
Branches:
lfn, master
Children:
a70bda4
Parents:
918e9910 (diff), e70edd1 (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the (diff) links above to see all the changes relative to each parent.
Message:

Merged the actual head

File:
1 edited

Legend:

Unmodified
Added
Removed
  • kernel/generic/src/udebug/udebug_ipc.c

    r918e9910 r827d73f  
    4141#include <proc/task.h>
    4242#include <proc/thread.h>
     43#include <mm/as.h>
    4344#include <arch.h>
    4445#include <errno.h>
     
    165166static void udebug_receive_thread_read(call_t *call)
    166167{
     168        uintptr_t uspace_addr;
     169        size_t buf_size;
     170        void *buffer;
     171        size_t copied, needed;
     172        int rc;
     173
     174        uspace_addr = IPC_GET_ARG2(call->data); /* Destination address */
     175        buf_size = IPC_GET_ARG3(call->data);    /* Dest. buffer size */
     176
     177        /*
     178         * Read thread list. Variable n will be filled with actual number
     179         * of threads times thread-id size.
     180         */
     181        rc = udebug_thread_read(&buffer, buf_size, &copied, &needed);
     182        if (rc < 0) {
     183                IPC_SET_RETVAL(call->data, rc);
     184                ipc_answer(&TASK->kb.box, call);
     185                return;
     186        }
     187
     188        /*
     189         * Make use of call->buffer to transfer data to caller's userspace
     190         */
     191
     192        IPC_SET_RETVAL(call->data, 0);
     193        /* ARG1=dest, ARG2=size as in IPC_M_DATA_READ so that
     194           same code in process_answer() can be used
     195           (no way to distinguish method in answer) */
     196        IPC_SET_ARG1(call->data, uspace_addr);
     197        IPC_SET_ARG2(call->data, copied);
     198        IPC_SET_ARG3(call->data, needed);
     199        call->buffer = buffer;
     200
     201        ipc_answer(&TASK->kb.box, call);
     202}
     203
     204/** Process a NAME_READ call.
     205 *
     206 * Returns a string containing the name of the task.
     207 *
     208 * @param call  The call structure.
     209 */
     210static void udebug_receive_name_read(call_t *call)
     211{
    167212        unative_t uspace_addr;
    168213        unative_t to_copy;
    169         unsigned total_bytes;
    170         unsigned buf_size;
    171         void *buffer;
    172         size_t n;
    173         int rc;
     214        size_t data_size;
     215        size_t buf_size;
     216        void *data;
    174217
    175218        uspace_addr = IPC_GET_ARG2(call->data); /* Destination address */
     
    177220
    178221        /*
    179          * Read thread list. Variable n will be filled with actual number
    180          * of threads times thread-id size.
    181          */
    182         rc = udebug_thread_read(&buffer, buf_size, &n);
    183         if (rc < 0) {
    184                 IPC_SET_RETVAL(call->data, rc);
    185                 ipc_answer(&TASK->kb.box, call);
    186                 return;
    187         }
    188 
    189         total_bytes = n;
    190 
    191         /* Copy MAX(buf_size, total_bytes) bytes */
    192 
    193         if (buf_size > total_bytes)
    194                 to_copy = total_bytes;
     222         * Read task name.
     223         */
     224        udebug_name_read((char **) &data, &data_size);
     225
     226        /* Copy MAX(buf_size, data_size) bytes */
     227
     228        if (buf_size > data_size)
     229                to_copy = data_size;
    195230        else
    196231                to_copy = buf_size;
     
    207242        IPC_SET_ARG2(call->data, to_copy);
    208243
    209         IPC_SET_ARG3(call->data, total_bytes);
    210         call->buffer = buffer;
    211 
    212         ipc_answer(&TASK->kb.box, call);
    213 }
     244        IPC_SET_ARG3(call->data, data_size);
     245        call->buffer = data;
     246
     247        ipc_answer(&TASK->kb.box, call);
     248}
     249
     250/** Process an AREAS_READ call.
     251 *
     252 * Returns a list of address space areas in the current task, as an array
     253 * of as_area_info_t structures.
     254 *
     255 * @param call  The call structure.
     256 */
     257static void udebug_receive_areas_read(call_t *call)
     258{
     259        unative_t uspace_addr;
     260        unative_t to_copy;
     261        size_t data_size;
     262        size_t buf_size;
     263        void *data;
     264
     265        uspace_addr = IPC_GET_ARG2(call->data); /* Destination address */
     266        buf_size = IPC_GET_ARG3(call->data);    /* Dest. buffer size */
     267
     268        /*
     269         * Read area list.
     270         */
     271        as_get_area_info(AS, (as_area_info_t **) &data, &data_size);
     272
     273        /* Copy MAX(buf_size, data_size) bytes */
     274
     275        if (buf_size > data_size)
     276                to_copy = data_size;
     277        else
     278                to_copy = buf_size;
     279
     280        /*
     281         * Make use of call->buffer to transfer data to caller's userspace
     282         */
     283
     284        IPC_SET_RETVAL(call->data, 0);
     285        /* ARG1=dest, ARG2=size as in IPC_M_DATA_READ so that
     286           same code in process_answer() can be used
     287           (no way to distinguish method in answer) */
     288        IPC_SET_ARG1(call->data, uspace_addr);
     289        IPC_SET_ARG2(call->data, to_copy);
     290
     291        IPC_SET_ARG3(call->data, data_size);
     292        call->buffer = data;
     293
     294        ipc_answer(&TASK->kb.box, call);
     295}
     296
    214297
    215298/** Process an ARGS_READ call.
     
    250333        ipc_answer(&TASK->kb.box, call);
    251334}
     335
     336/** Receive a REGS_READ call.
     337 *
     338 * Reads the thread's register state (istate structure).
     339 */
     340static void udebug_receive_regs_read(call_t *call)
     341{
     342        thread_t *t;
     343        unative_t uspace_addr;
     344        unative_t to_copy;
     345        void *buffer;
     346        int rc;
     347
     348        t = (thread_t *) IPC_GET_ARG2(call->data);
     349
     350        rc = udebug_regs_read(t, &buffer);
     351        if (rc < 0) {
     352                IPC_SET_RETVAL(call->data, rc);
     353                ipc_answer(&TASK->kb.box, call);
     354                return;
     355        }
     356
     357        /*
     358         * Make use of call->buffer to transfer data to caller's userspace
     359         */
     360
     361        uspace_addr = IPC_GET_ARG3(call->data);
     362        to_copy = sizeof(istate_t);
     363
     364        IPC_SET_RETVAL(call->data, 0);
     365        /* ARG1=dest, ARG2=size as in IPC_M_DATA_READ so that
     366           same code in process_answer() can be used
     367           (no way to distinguish method in answer) */
     368        IPC_SET_ARG1(call->data, uspace_addr);
     369        IPC_SET_ARG2(call->data, to_copy);
     370
     371        call->buffer = buffer;
     372
     373        ipc_answer(&TASK->kb.box, call);
     374}
     375
    252376
    253377/** Process an MEM_READ call.
     
    331455                udebug_receive_thread_read(call);
    332456                break;
     457        case UDEBUG_M_NAME_READ:
     458                udebug_receive_name_read(call);
     459                break;
     460        case UDEBUG_M_AREAS_READ:
     461                udebug_receive_areas_read(call);
     462                break;
    333463        case UDEBUG_M_ARGS_READ:
    334464                udebug_receive_args_read(call);
    335465                break;
     466        case UDEBUG_M_REGS_READ:
     467                udebug_receive_regs_read(call);
     468                break;
    336469        case UDEBUG_M_MEM_READ:
    337470                udebug_receive_mem_read(call);
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