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Multiprocessing

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Степанов Платон
2026-02-09 12:52:53 +04:00
parent 6043cc0d5c
commit 8710577d42
4 changed files with 168 additions and 17 deletions
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38
src/kernel.h
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@@ -2,20 +2,18 @@
#include "common.h"
extern char __bss[], __bss_end[], __stack_top[];
// ===== Linker data =====
extern char __bss[], __bss_end[];
extern char __stack_top[];
extern char __free_ram[], __free_ram_end[];
// ===== SBI data ======
struct sbiret {
long error;
long value;
};
#define PANIC(fmt, ...) \
do { \
printf("PANIC: %s:%d: " fmt "\n", __FILE__, __LINE__, ##__VA_ARGS__); \
while (1) { \
} \
} while (0)
// ===== Exception handler =====
struct trap_frame {
uint32_t ra;
uint32_t gp;
@@ -50,6 +48,23 @@ struct trap_frame {
uint32_t sp;
} __attribute__((packed));
// ===== Multiprocessing =====
#define PROCS_MAX 8
#define PROC_UNUSED 0
#define PROC_RUNNABLE 1
struct process {
int pid;
int state;
vaddr_t sp;
uint8_t stack[8192];
};
struct process procs[PROCS_MAX];
struct process *current_proc;
struct process *idle_proc;
// ===== Macros =====
#define READ_CSR(reg) \
({ \
unsigned long __tmp; \
@@ -62,3 +77,10 @@ struct trap_frame {
uint32_t __tmp = (value); \
__asm__ __volatile__("csrw " #reg ", %0" ::"r"(__tmp)); \
} while (0)
#define PANIC(fmt, ...) \
do { \
printf("PANIC: %s:%d: " fmt "\n", __FILE__, __LINE__, ##__VA_ARGS__); \
while (1) { \
} \
} while (0)