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cleaned up scheduling and boot code

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This commit is contained in:
Anton Lydike 2021-08-17 09:08:20 +02:00
parent 04f6c80d7d
commit d9625b445a
3 changed files with 14 additions and 26 deletions
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12
kinclude/boot.S
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@ -5,20 +5,8 @@ stack_bottom:
.space 4096
stack_top:
.section .text._start
// Set up all the CSR mstatus_offsets
// .set mstatus, 0x300 // machine status
// .set mscratch, 0x340
// .set mtvec, 0x305 // machine trap handler
// .set mcause, 0x342 // machine trap cause
// .set mtval, 0x343 // machine bad address or instruction
// .set misa, 0x301 // machine ISA
// .set mie, 0x304 // machine interrupt enable
// .set mip, 0x344 // machine interrupt pending
.extern init
.type init, @function

12
kinclude/sched.c
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@ -128,12 +128,12 @@ int scheduler_index_from_pid(int pid)
return -1;
}
int scheduler_create_process(int binid)
{
return 0;
}
int* get_current_process_registers()
{
return processes[current_process_index].regs;
}
}
ProcessControlBlock* get_current_process()
{
return &processes[current_process_index];
}

16
kinclude/sched.h
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@ -3,12 +3,12 @@
#include "../kernel.h"
// process statuses:
#define PROC_DEAD 0
#define PROC_RDY 1
#define PROC_WAIT_LOCK 2
#define PROC_WAIT_PROC 3
#define PROC_WAIT_SLEEP 4
enum process_status {
PROC_DEAD = 0,
PROC_RDY = 1,
PROC_WAIT_PROC = 2,
PROC_WAIT_SLEEP = 3,
}
// process structure:
typedef struct ProcessControlBlock ProcessControlBlock;
@ -17,8 +17,7 @@ struct ProcessControlBlock {
int pc;
int regs[31];
// scheduling information
int status;
int requested_lock;
enum process_status status;
ProcessControlBlock *waiting_for_process;
unsigned long long int asleep_until;
};
@ -33,5 +32,6 @@ void __attribute__((noreturn)) scheduler_run_next();
void __attribute__((noreturn)) scheduler_switch_to(int proc_index);
int scheduler_index_from_pid(int pid);
int* get_current_process_registers();
ProcessControlBlock* get_current_process();
#endif