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Dynamic IRQ handling

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This commit is contained in:
Kamil Kowalczyk
2025-12-10 01:33:51 +01:00
parent 64b14f3878
commit 6feea1444a
18 changed files with 341 additions and 121 deletions
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74
kernel/platform/i386_pc/sys/isr.S
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@ -38,8 +38,8 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
.type except ## exc, @function; \
except ## exc:; \
cli; \
push $0; \
push $exc; \
pushl $0; \
pushl $exc; \
jmp temp_except_hndlr;
#define EXCEPT_ERR(exc) \
@ -47,7 +47,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
.type except ## exc, @function; \
except ## exc:; \
cli; \
push $exc; \
pushl $exc; \
jmp temp_except_hndlr;
EXCEPT_NOERR(0)
@ -87,42 +87,42 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
temp_except_hndlr:
pushal
xorl %eax, %eax
mov %ds, %ax
push %eax
movw %ds, %ax
pushl %eax
/* load kernel DS */
mov $0x10, %ax
mov %ax, %ds
mov %ax, %es
mov %ax, %fs
mov %ax, %gs
movw $0x10, %ax
movw %ax, %ds
movw %ax, %es
movw %ax, %fs
movw %ax, %gs
push %esp
pushl %esp
call except_fini
add $0x04, %esp
addl $4, %esp
/* restore DS */
pop %ebx
mov %bx, %ds
mov %bx, %es
mov %bx, %fs
mov %bx, %gs
popl %eax
movw %ax, %ds
movw %ax, %es
movw %ax, %fs
movw %ax, %gs
/* rebalance */
popal
add $0x8, %esp
addl $8, %esp
iret
iretl
#define IRQ(irq1) \
.global irq ## irq1; \
.type irq ## irq1, @function; \
irq ## irq1:; \
cli; \
push $0; \
push $irq1; \
pushl $0; \
pushl $irq1; \
jmp temp_irq_hndlr;
IRQ(0)
@ -145,31 +145,31 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
temp_irq_hndlr:
pushal
xorl %eax, %eax
mov %ds, %ax
push %eax
movw %ds, %ax
pushl %eax
/* load kernel DS */
mov $0x10, %ax
mov %ax, %ds
mov %ax, %es
mov %ax, %fs
mov %ax, %gs
movw $0x10, %ax
movw %ax, %ds
movw %ax, %es
movw %ax, %fs
movw %ax, %gs
push %esp
pushl %esp
call irq_fini
add $0x04, %esp
addl $4, %esp
/* restore DS */
pop %ebx
mov %bx, %ds
mov %bx, %es
mov %bx, %fs
mov %bx, %gs
popl %eax
movw %ax, %ds
movw %ax, %es
movw %ax, %fs
movw %ax, %gs
/* rebalance */
popal
add $0x8, %esp
addl $8, %esp
iret
iretl