116 lines
3.5 KiB
C
116 lines
3.5 KiB
C
#include <ctype.h>
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#include <string.h>
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#include <aos/aos.h>
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#include <spawn/spawn.h>
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#include <elf/elf.h>
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#include <aos/dispatcher_arch.h>
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#include <aos/lmp_chan.h>
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#include <aos/aos_rpc.h>
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#include <barrelfish_kpi/paging_arm_v8.h>
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#include <barrelfish_kpi/domain_params.h>
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#include <spawn/multiboot.h>
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#include <spawn/argv.h>
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extern struct bootinfo *bi;
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extern coreid_t my_core_id;
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/**
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* \brief Set the base address of the .got (Global Offset Table) section of the ELF binary
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*
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* \param arch_load_info This must be the base address of the .got section (local to the
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* child's VSpace). Must not be NULL.
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* \param handle The handle for the new dispatcher that is to be spawned. Must not be NULL.
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* \param enabled_area The "resume enabled" register set. Must not be NULL.
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* \param disabled_area The "resume disabled" register set. Must not be NULL.
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*/
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__attribute__((__used__))
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static void armv8_set_registers(void *arch_load_info,
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dispatcher_handle_t handle,
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arch_registers_state_t *enabled_area,
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arch_registers_state_t *disabled_area)
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{
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assert(arch_load_info != NULL);
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uintptr_t got_base = (uintptr_t) arch_load_info;
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struct dispatcher_shared_aarch64 * disp_arm = get_dispatcher_shared_aarch64(handle);
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disp_arm->got_base = got_base;
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enabled_area->regs[REG_OFFSET(PIC_REGISTER)] = got_base;
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disabled_area->regs[REG_OFFSET(PIC_REGISTER)] = got_base;
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}
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/**
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* TODO(M2): Implement this function.
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* \brief Spawn a new dispatcher called 'argv[0]' with 'argc' arguments.
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*
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* This function spawns a new dispatcher running the ELF binary called
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* 'argv[0]' with 'argc' - 1 additional arguments. It fills out 'si'
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* and 'pid'.
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*
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* \param argc The number of command line arguments. Must be > 0.
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* \param argv An array storing 'argc' command line arguments.
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* \param si A pointer to the spawninfo struct representing
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* the child. It will be filled out by this function. Must not be NULL.
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* \param pid A pointer to a domainid_t variable that will be
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* assigned to by this function. Must not be NULL.
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* \return Either SYS_ERR_OK if no error occured or an error
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* indicating what went wrong otherwise.
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*/
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errval_t spawn_load_argv(int argc, char *argv[], struct spawninfo *si,
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domainid_t *pid) {
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// TODO: Implement me
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// - Initialize the spawn_info struct
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// - Get the module from the multiboot image
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// and map it (take a look at multiboot.c)
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// - Setup the child's cspace
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// - Setup the child's vspace
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// - Load the ELF binary
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// - Setup the dispatcher
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// - Setup the environment
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// - Make the new dispatcher runnable
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return LIB_ERR_NOT_IMPLEMENTED;
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}
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/**
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* TODO(M2): Implement this function.
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* \brief Spawn a new dispatcher executing 'binary_name'
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*
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* \param binary_name The name of the binary.
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* \param si A pointer to a spawninfo struct that will be
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* filled out by spawn_load_by_name. Must not be NULL.
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* \param pid A pointer to a domainid_t that will be
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* filled out by spawn_load_by_name. Must not be NULL.
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*
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* \return Either SYS_ERR_OK if no error occured or an error
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* indicating what went wrong otherwise.
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*/
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errval_t spawn_load_by_name(char *binary_name, struct spawninfo * si,
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domainid_t *pid) {
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// TODO: Implement me
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// - Get the mem_region from the multiboot image
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// - Fill in argc/argv from the multiboot command line
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// - Call spawn_load_argv
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return LIB_ERR_NOT_IMPLEMENTED;
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}
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