diff options
Diffstat (limited to 'nx-X11/extras/Mesa_6.4.1/src/glut/dos/PC_HW/pc_irq.S')
| -rw-r--r-- | nx-X11/extras/Mesa_6.4.1/src/glut/dos/PC_HW/pc_irq.S | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/nx-X11/extras/Mesa_6.4.1/src/glut/dos/PC_HW/pc_irq.S b/nx-X11/extras/Mesa_6.4.1/src/glut/dos/PC_HW/pc_irq.S new file mode 100644 index 000000000..7d62ac74c --- /dev/null +++ b/nx-X11/extras/Mesa_6.4.1/src/glut/dos/PC_HW/pc_irq.S @@ -0,0 +1,182 @@ +/* + * PC/HW routine collection v1.3 for DOS/DJGPP + * + * Copyright (C) 2002 - Daniel Borca + * Email : dborca@yahoo.com + * Web : http://www.geocities.com/dborca + */ + + + .file "pc_irq.S" + + .text + +#define IRQ_STACK_SIZE 16384 + +#define IRQ_WRAPPER_LEN (__irq_wrapper_1-__irq_wrapper_0) +#define IRQ_OLD (__irq_old_0-__irq_wrapper_0) +#define IRQ_HOOK (__irq_hook_0-__irq_wrapper_0) +#define IRQ_STACK (__irq_stack_0-__irq_wrapper_0) + + .balign 4 +common: + movw $0x0400, %ax + int $0x31 + + movl %ss:8(%ebp), %ebx + cmpl $15, %ebx + jbe 0f + fail: + orl $-1, %eax + popl %edi + popl %ebx + leave + ret + + 0: + movl %ebx, %edi + imull $IRQ_WRAPPER_LEN, %edi + addl $__irq_wrapper_0, %edi + + cmpb $7, %bl + jbe 1f + movb %dl, %dh + subb $8, %dh + 1: + addb %dh, %bl + ret + + .balign 4 + .global _pc_install_irq +_pc_install_irq: + pushl %ebp + movl %esp, %ebp + pushl %ebx + pushl %edi + + call common + + cmpl $0, IRQ_HOOK(%edi) + jne fail + + pushl $IRQ_WRAPPER_LEN + pushl %edi + call __go32_dpmi_lock_code + addl $8, %esp + testl %eax, %eax + jnz fail + + pushl $IRQ_STACK_SIZE + call _pc_malloc + popl %edx + testl %eax, %eax + jz fail + addl %edx, %eax + movl %eax, IRQ_STACK(%edi) + + movl ___djgpp_ds_alias, %eax + movl %eax, IRQ_STACK+4(%edi) + + movl %ss:12(%ebp), %eax + movl %eax, IRQ_HOOK(%edi) + + movw $0x0204, %ax + int $0x31 + movl %edx, IRQ_OLD(%edi) + movw %cx, IRQ_OLD+4(%edi) + movw $0x0205, %ax + movl %edi, %edx + movl %cs, %ecx + int $0x31 + + done: + xorl %eax, %eax + popl %edi + popl %ebx + leave + ret + + .balign 4 + .global _pc_remove_irq +_pc_remove_irq: + pushl %ebp + movl %esp, %ebp + pushl %ebx + pushl %edi + + call common + + cmpl $0, IRQ_HOOK(%edi) + je fail + + movl $0, IRQ_HOOK(%edi) + + movw $0x0205, %ax + movl IRQ_OLD(%edi), %edx + movl IRQ_OLD+4(%edi), %ecx + int $0x31 + + movl IRQ_STACK(%edi), %eax + subl $IRQ_STACK_SIZE, %eax + pushl %eax + call _free + popl %eax + + jmp done + +#define WRAPPER(x) ; \ + .balign 4 ; \ +__irq_wrapper_##x: ; \ + pushal ; \ + pushl %ds ; \ + pushl %es ; \ + pushl %fs ; \ + pushl %gs ; \ + movl %ss, %ebx ; \ + movl %esp, %esi ; \ + lss %cs:__irq_stack_##x, %esp ; \ + pushl %ss ; \ + pushl %ss ; \ + popl %es ; \ + popl %ds ; \ + movl ___djgpp_dos_sel, %fs ; \ + pushl %fs ; \ + popl %gs ; \ + call *__irq_hook_##x ; \ + movl %ebx, %ss ; \ + movl %esi, %esp ; \ + testl %eax, %eax ; \ + popl %gs ; \ + popl %fs ; \ + popl %es ; \ + popl %ds ; \ + popal ; \ + jz __irq_ignore_##x ; \ +__irq_bypass_##x: ; \ + ljmp *%cs:__irq_old_##x ; \ +__irq_ignore_##x: ; \ + iret ; \ + .balign 4 ; \ +__irq_old_##x: ; \ + .long 0, 0 ; \ +__irq_hook_##x: ; \ + .long 0 ; \ +__irq_stack_##x: ; \ + .long 0, 0 + + WRAPPER(0); + WRAPPER(1); + WRAPPER(2); + WRAPPER(3); + WRAPPER(4); + WRAPPER(5); + WRAPPER(6); + WRAPPER(7); + WRAPPER(8); + WRAPPER(9); + WRAPPER(10); + WRAPPER(11); + WRAPPER(12); + WRAPPER(13); + WRAPPER(14); + WRAPPER(15); |