kernel/scheduler.S



.code32
.global yield 
.extern schedule_next_task 
yield: # void yield()
    cli

    popl %ecx
    
    pushfl          // EFLAGS
    pushl %cs       // CS   
    pushl %ecx   // EIP

    pushal
    call send_eoi_master

    xor %eax, %eax
    mov %ds, %ax
    pushl %eax

    mov $0x10, %ax
    mov %ax, %ds
    mov %ax, %es
    
    pushl %esp
    call switch_context
    movl %eax, %esp

    popl %eax
    mov %ax, %ds
    mov %ax, %es

    popal
    sti
    iret
compiled newlib, need to hook up the system calls 2026-06-28 17:58:58 -05:00

			`.code32`
did some restructuring, got multitasking almost working 2026-06-26 20:05:01 -05:00			`.global yield`
compiled newlib, need to hook up the system calls 2026-06-28 17:58:58 -05:00			`.extern schedule_next_task`
			`yield: # void yield()`
			`cli`

removed pdclib, strange things were happening..., user shell kinda works now 2026-07-06 22:13:57 -05:00			`popl %ecx`

			`pushfl // EFLAGS`
			`pushl %cs // CS`
			`pushl %ecx // EIP`

			`pushal`
			`call send_eoi_master`
compiled newlib, need to hook up the system calls 2026-06-28 17:58:58 -05:00
removed pdclib, strange things were happening..., user shell kinda works now 2026-07-06 22:13:57 -05:00			`xor %eax, %eax`
			`mov %ds, %ax`
compiled newlib, need to hook up the system calls 2026-06-28 17:58:58 -05:00			`pushl %eax`

removed pdclib, strange things were happening..., user shell kinda works now 2026-07-06 22:13:57 -05:00			`mov $0x10, %ax`
			`mov %ax, %ds`
			`mov %ax, %es`
compiled newlib, need to hook up the system calls 2026-06-28 17:58:58 -05:00
			`pushl %esp`
			`call switch_context`
			`movl %eax, %esp`

removed pdclib, strange things were happening..., user shell kinda works now 2026-07-06 22:13:57 -05:00			`popl %eax`
			`mov %ax, %ds`
			`mov %ax, %es`

compiled newlib, need to hook up the system calls 2026-06-28 17:58:58 -05:00			`popal`
			`sti`
			`iret`