int main(int argc, char *argv[]) { (void)argc; (void)argv; g_time_cb = mock_time_callback; g_pid_cb = mock_pid_callback; g_buffer_cb = mock_buffer_callback; zf_log_set_output_v(ZF_LOG_PUT_STD, 0, mock_output_callback); zf_log_set_tag_prefix("prefix"); init_expected_lines(); test_msg_output(); test_mem_output(); return 0; }
int main(int argc, char *argv[]) { zf_log_set_tag_prefix("hello"); ZF_LOGI("You will see the number of arguments: %i", argc); ZF_LOGD("You will NOT see the first argument: %s", *argv); zf_log_set_output_level(ZF_LOG_WARN); ZF_LOGW("You will see this WARNING message"); ZF_LOGI("You will NOT see this INFO message"); const char data[] = "Lorem ipsum dolor sit amet, consectetur adipiscing elit. " "Aliquam pharetra orci id velit porttitor tempus."; ZF_LOGW_MEM(data, sizeof(data), "Lorem ipsum at %p:", data); return 0; }
int main(void) { UNUSED int error; /* Set up logging and give us a name: useful for debugging if the thread faults */ zf_log_set_tag_prefix("hello-3:"); name_thread(seL4_CapInitThreadTCB, "hello-3"); /* get boot info */ info = seL4_GetBootInfo(); /* init simple */ simple_default_init_bootinfo(&simple, info); /* print out bootinfo and other info about simple */ simple_print(&simple); /* create an allocator */ allocman = bootstrap_use_current_simple(&simple, ALLOCATOR_STATIC_POOL_SIZE, allocator_mem_pool); ZF_LOGF_IF(allocman == NULL, "Failed to initialize alloc manager.\n" "\tMemory pool sufficiently sized?\n" "\tMemory pool pointer valid?\n"); /* create a vka (interface for interacting with the underlying allocator) */ allocman_make_vka(&vka, allocman); /* get our cspace root cnode */ seL4_CPtr cspace_cap; cspace_cap = simple_get_cnode(&simple); /* get our vspace root page directory */ seL4_CPtr pd_cap; pd_cap = simple_get_pd(&simple); /* create a new TCB */ vka_object_t tcb_object = {0}; error = vka_alloc_tcb(&vka, &tcb_object); ZF_LOGF_IFERR(error, "Failed to allocate new TCB.\n" "\tVKA given sufficient bootstrap memory?"); /* * create and map an ipc buffer: */ /* TODO 1: get a frame cap for the ipc buffer */ /* hint: vka_alloc_frame() * int vka_alloc_frame(vka_t *vka, uint32_t size_bits, vka_object_t *result) * @param vka Pointer to vka interface. * @param size_bits Frame size: 2^size_bits * @param result Structure for the Frame object. This gets initialised. * @return 0 on success * Link to source: https://wiki.sel4.systems/seL4%20Tutorial%203#TODO_1: */ vka_object_t ipc_frame_object; error = vka_alloc_frame(&vka, IPCBUF_FRAME_SIZE_BITS, &ipc_frame_object); ZF_LOGF_IFERR(error, "Failed to alloc a frame for the IPC buffer.\n" "\tThe frame size is not the number of bytes, but an exponent.\n" "\tNB: This frame is not an immediately usable, virtually mapped page.\n") /* * map the frame into the vspace at ipc_buffer_vaddr. * To do this we first try to map it in to the root page directory. * If there is already a page table mapped in the appropriate slot in the * page diretory where we can insert this frame, then this will succeed. * Otherwise we first need to create a page table, and map it in to * the page directory, before we can map the frame in. */ seL4_Word ipc_buffer_vaddr = IPCBUF_VADDR; /* TODO 2: try to map the frame the first time */ /* hint 1: seL4_ARCH_Page_Map() * The *ARCH* versions of seL4 sys calls are abstractions over the architecture provided by libsel4utils * this one is defined as: * #define seL4_ARCH_Page_Map seL4_X86_Page_Map * in: Link to source: https://wiki.sel4.systems/seL4%20Tutorial%203#TODO_2: * The signature for the underlying function is: * int seL4_X86_Page_Map(seL4_X86_Page service, seL4_X86_PageDirectory pd, seL4_Word vaddr, seL4_CapRights rights, seL4_X86_VMAttributes attr) * @param service Capability to the page to map. * @param pd Capability to the VSpace which will contain the mapping. * @param vaddr Virtual address to map the page into. * @param rights Rights for the mapping. * @param attr VM Attributes for the mapping. * @return 0 on success. * * Note: this function is generated during build. It is generated from the following definition: * Link to source: https://wiki.sel4.systems/seL4%20Tutorial%203#TODO_2: * You can find out more about it in the API manual: http://sel4.systems/Info/Docs/seL4-manual-3.0.0.pdf * * hint 2: for the rights, use seL4_AllRights * hint 3: for VM attributes use seL4_ARCH_Default_VMAttributes * Hint 4: It is normal for this function call to fail. That means there are * no page tables with free slots -- proceed to the next step where you'll * be led to allocate a new empty page table and map it into the VSpace, * before trying again. */ error = seL4_ARCH_Page_Map(ipc_frame_object.cptr, pd_cap, ipc_buffer_vaddr, seL4_AllRights, seL4_ARCH_Default_VMAttributes); if (error != 0) { /* TODO 3: create a page table */ /* hint: vka_alloc_page_table() * int vka_alloc_page_table(vka_t *vka, vka_object_t *result) * @param vka Pointer to vka interface. * @param result Structure for the PageTable object. This gets initialised. * @return 0 on success * Link to source: https://wiki.sel4.systems/seL4%20Tutorial%203#TODO_3: */ vka_object_t pt_object; error = vka_alloc_page_table(&vka, &pt_object); ZF_LOGF_IFERR(error, "Failed to allocate new page table.\n"); /* TODO 4: map the page table */ /* hint 1: seL4_ARCH_PageTable_Map() * The *ARCH* versions of seL4 sys calls are abstractions over the architecture provided by libsel4utils * this one is defined as: * #define seL4_ARCH_PageTable_Map seL4_X86_PageTable_Map * Link to source: https://wiki.sel4.systems/seL4%20Tutorial%203#TODO_4: * The signature for the underlying function is: * int seL4_X86_PageTable_Map(seL4_X86_PageTable service, seL4_X86_PageDirectory pd, seL4_Word vaddr, seL4_X86_VMAttributes attr) * @param service Capability to the page table to map. * @param pd Capability to the VSpace which will contain the mapping. * @param vaddr Virtual address to map the page table into. * @param rights Rights for the mapping. * @param attr VM Attributes for the mapping. * @return 0 on success. * * Note: this function is generated during build. It is generated from the following definition: * Link to source: https://wiki.sel4.systems/seL4%20Tutorial%203#TODO_4: * You can find out more about it in the API manual: http://sel4.systems/Info/Docs/seL4-manual-3.0.0.pdf * * hint 2: for VM attributes use seL4_ARCH_Default_VMAttributes */ error = seL4_ARCH_PageTable_Map(pt_object.cptr, pd_cap, ipc_buffer_vaddr, seL4_ARCH_Default_VMAttributes); ZF_LOGF_IFERR(error, "Failed to map page table into VSpace.\n" "\tWe are inserting a new page table into the top-level table.\n" "\tPass a capability to the new page table, and not for example, the IPC buffer frame vaddr.\n") /* TODO 5: then map the frame in */ /* hint 1: use seL4_ARCH_Page_Map() as above * hint 2: for the rights, use seL4_AllRights * hint 3: for VM attributes use seL4_ARCH_Default_VMAttributes */ error = seL4_ARCH_Page_Map(ipc_frame_object.cptr, pd_cap, ipc_buffer_vaddr, seL4_AllRights, seL4_ARCH_Default_VMAttributes); ZF_LOGF_IFERR(error, "Failed again to map the IPC buffer frame into the VSpace.\n" "\t(It's not supposed to fail.)\n" "\tPass a capability to the IPC buffer's physical frame.\n" "\tRevisit the first seL4_ARCH_Page_Map call above and double-check your arguments.\n"); } /* set the IPC buffer's virtual address in a field of the IPC buffer */ seL4_IPCBuffer *ipcbuf = (seL4_IPCBuffer*)ipc_buffer_vaddr; ipcbuf->userData = ipc_buffer_vaddr; /* TODO 6: create an endpoint */ /* hint: vka_alloc_endpoint() * int vka_alloc_endpoint(vka_t *vka, vka_object_t *result) * @param vka Pointer to vka interface. * @param result Structure for the Endpoint object. This gets initialised. * @return 0 on success * Link to source: https://wiki.sel4.systems/seL4%20Tutorial%203#TODO_6: */ error = vka_alloc_endpoint(&vka, &ep_object); ZF_LOGF_IFERR(error, "Failed to allocate new endpoint object.\n"); /* TODO 7: make a badged copy of it in our cspace. This copy will be used to send * an IPC message to the original cap */ /* hint 1: vka_mint_object() * int vka_mint_object(vka_t *vka, vka_object_t *object, cspacepath_t *result, seL4_CapRights rights, seL4_CapData_t badge) * @param[in] vka The allocator for the cspace. * @param[in] object Target object for cap minting. * @param[out] result Allocated cspacepath. * @param[in] rights The rights for the minted cap. * @param[in] badge The badge for the minted cap. * @return 0 on success * * Link to source: https://wiki.sel4.systems/seL4%20Tutorial%203#TODO_7: * * hint 2: for the rights, use seL4_AllRights * hint 3: for the badge use seL4_CapData_Badge_new() * seL4_CapData_t CONST seL4_CapData_Badge_new(seL4_Uint32 Badge) * @param[in] Badge The badge number to use * @return A CapData structure containing the desired badge info * * seL4_CapData_t is generated during build. * The type definition and generated field access functions are defined in a generated file: * build/x86/pc99/libsel4/include/sel4/types_gen.h * It is generated from the following definition: * Link to source: https://wiki.sel4.systems/seL4%20Tutorial%203#TODO_7: * You can find out more about it in the API manual: http://sel4.systems/Info/Docs/seL4-manual-3.0.0.pdf * * hint 4: for the badge use EP_BADGE */ error = vka_mint_object(&vka, &ep_object, &ep_cap_path, seL4_AllRights, seL4_CapData_Badge_new(EP_BADGE)); ZF_LOGF_IFERR(error, "Failed to mint new badged copy of IPC endpoint.\n" "\tseL4_Mint is the backend for vka_mint_object.\n" "\tseL4_Mint is simply being used here to create a badged copy of the same IPC endpoint.\n" "\tThink of a badge in this case as an IPC context cookie.\n"); /* initialise the new TCB */ error = seL4_TCB_Configure(tcb_object.cptr, seL4_CapNull, seL4_PrioProps_new(seL4_MaxPrio, seL4_MaxPrio), cspace_cap, seL4_NilData, pd_cap, seL4_NilData, ipc_buffer_vaddr, ipc_frame_object.cptr); ZF_LOGF_IFERR(error, "Failed to configure the new TCB object.\n" "\tWe're running the new thread with the root thread's CSpace.\n" "\tWe're running the new thread in the root thread's VSpace.\n"); /* give the new thread a name */ name_thread(tcb_object.cptr, "hello-3: thread_2"); /* set start up registers for the new thread */ seL4_UserContext regs = {0}; size_t regs_size = sizeof(seL4_UserContext) / sizeof(seL4_Word); /* set instruction pointer where the thread shoud start running */ sel4utils_set_instruction_pointer(®s, (seL4_Word)thread_2); /* check that stack is aligned correctly */ const int stack_alignment_requirement = sizeof(seL4_Word) * 2; uintptr_t thread_2_stack_top = (uintptr_t)thread_2_stack + sizeof(thread_2_stack); ZF_LOGF_IF(thread_2_stack_top % (stack_alignment_requirement) != 0, "Stack top isn't aligned correctly to a %dB boundary.\n" "\tDouble check to ensure you're not trampling.", stack_alignment_requirement); /* set stack pointer for the new thread. remember the stack grows down */ sel4utils_set_stack_pointer(®s, thread_2_stack_top); /* set the fs register for IPC buffer */ regs.fs = IPCBUF_GDT_SELECTOR; /* actually write the TCB registers. */ error = seL4_TCB_WriteRegisters(tcb_object.cptr, 0, 0, regs_size, ®s); ZF_LOGF_IFERR(error, "Failed to write the new thread's register set.\n" "\tDid you write the correct number of registers? See arg4.\n"); /* start the new thread running */ error = seL4_TCB_Resume(tcb_object.cptr); ZF_LOGF_IFERR(error, "Failed to start new thread.\n"); /* we are done, say hello */ printf("main: hello world\n"); /* * now send a message to the new thread, and wait for a reply */ seL4_Word msg; seL4_MessageInfo_t tag; /* TODO 8: set the data to send. We send it in the first message register */ /* hint 1: seL4_MessageInfo_new() * seL4_MessageInfo_t CONST seL4_MessageInfo_new(seL4_Uint32 label, seL4_Uint32 capsUnwrapped, seL4_Uint32 extraCaps, seL4_Uint32 length) * @param label The value of the label field * @param capsUnwrapped The value of the capsUnwrapped field * @param extraCaps The value of the extraCaps field * @param length The number of message registers to send * @return The seL4_MessageInfo_t containing the given values. * * seL4_MessageInfo_new() is generated during build. It can be found in: * build/x86/pc99/libsel4/include/sel4/types_gen.h * It is generated from the following definition: * Link to source: https://wiki.sel4.systems/seL4%20Tutorial%203#TODO_8: * * hint 2: use 0 for the first 3 fields. * hint 3: send only 1 message register of data * * hint 4: seL4_SetMR() * void seL4_SetMR(int i, seL4_Word mr) * @param i The message register to write * @param mr The value of the message register * Link to source: https://wiki.sel4.systems/seL4%20Tutorial%203#TODO_8: * You can find out more about message registers in the API manual: http://sel4.systems/Info/Docs/seL4-manual-3.0.0.pdf * * hint 5: send MSG_DATA */ tag = seL4_MessageInfo_new(0, 0, 0, 1); seL4_SetMR(0, MSG_DATA); /* TODO 9: send and wait for a reply. */ /* hint: seL4_Call() * seL4_MessageInfo_t seL4_Call(seL4_CPtr dest, seL4_MessageInfo_t msgInfo) * @param dest The capability to be invoked. * @param msgInfo The messageinfo structure for the IPC. This specifies information about the message to send (such as the number of message registers to send). * @return A seL4_MessageInfo_t structure. This is information about the repy message. * Link to source: https://wiki.sel4.systems/seL4%20Tutorial%203#TODO_9: * You can find out more about it in the API manual: http://sel4.systems/Info/Docs/seL4-manual-3.0.0.pdf * * hint 2: seL4_MessageInfo_t is generated during build. * The type definition and generated field access functions are defined in a generated file: * build/x86/pc99/libsel4/include/sel4/types_gen.h * It is generated from the following definition: * Link to source: https://wiki.sel4.systems/seL4%20Tutorial%203#TODO_9: * You can find out more about it in the API manual: http://sel4.systems/Info/Docs/seL4-manual-3.0.0.pdf */ tag = seL4_Call(ep_cap_path.capPtr, tag); /* TODO 10: get the reply message */ /* hint: seL4_GetMR() * seL4_Word seL4_GetMR(int i) * @param i The message register to retreive * @return The message register value * Link to source: https://wiki.sel4.systems/seL4%20Tutorial%203#TODO_10: * You can find out more about message registers in the API manual: http://sel4.systems/Info/Docs/seL4-manual-3.0.0.pdf */ msg = seL4_GetMR(0); /* check that we got the expected repy */ ZF_LOGF_IF(seL4_MessageInfo_get_length(tag) != 1, "Response data from thread_2 was not the length expected.\n" "\tHow many registers did you set with seL4_SetMR within thread_2?\n"); ZF_LOGF_IF(msg != ~MSG_DATA, "Response data from thread_2's content was not what was expected.\n"); printf("main: got a reply: %#x\n", msg); return 0; }