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Stupidly simple process memory manager with brk()

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Thomas Lovén
2018-03-01 15:12:35 +01:00
parent 19d58ec71d
commit 4ecec1eec6
6 changed files with 41 additions and 10 deletions
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4
src/kernel/include/memory.h
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@@ -45,8 +45,8 @@ uint64_t vmm_get_page(uint64_t P4, uint64_t addr);
#define PAGE_EXIST(p) ((p) != (uint64_t)-1)
int vmm_set_page(uint64_t P4, uint64_t addr, uint64_t page, uint16_t flags);
void vmm_clear_page(uint64_t P4, uint64_t addr, int free);
size_t memcpy_k2u(uint64_t P4, void *dst, void *src, size_t n);
size_t memcpy_u2k(void *dst, uint64_t P4, void *src, size_t n);
size_t memcpy_to_p4(uint64_t P4, void *dst, void *src, size_t n);
size_t memcpy_from_p4(void *dst, uint64_t P4, void *src, size_t n);
extern union PTE BootP4;
extern int kernel_start, kernel_end;

7
src/kernel/include/process.h
View File

@@ -3,15 +3,18 @@
#include <scheduler.h>
#include <stdint.h>
#include <interrupts.h>
#include <stddef.h>
struct process
{
uint64_t pid;
void *stack_ptr;
uint64_t state;
uint64_t P4;
uint64_t brk;
uint64_t stack;
QUEUE_SPOT(runQ);
uint8_t stack[];
};
struct process *process();
@@ -21,3 +24,5 @@ void yield();
void start_scheduler();
void switch_stack(void *old_ptr, void *new_ptr);
uint64_t procmm_brk(struct process *p, void *addr);