Miloslav Trmac <[email protected]> wrote:
>
> +static void call_bios(struct regs *regs)
> +{
> + unsigned long flags;
> +
> + preempt_disable();
> + local_irq_save(flags);
> + asm volatile ("pushl %%ebp;"
> + "movl %[data], %%ebp;"
> + "call *%[routine];"
> + "popl %%ebp"
> + : "=a" (regs->eax), "=b" (regs->ebx), "=c" (regs->ecx)
> + : "0" (regs->eax), "1" (regs->ebx), "2" (regs->ecx),
> + [routine] "m" (bios_entry_point),
> + [data] "m" (bios_data_map_base)
> + : "edx", "edi", "esi", "memory");
> + local_irq_restore(flags);
> + preempt_enable();
> +}
> +
(the preempt_disable/enable isn't needed - local_irq_save() will suffice)
gcc-2.95.x spits the dummy over this [routine] stuff. What compiler does
this require?
Is it necessary to open-code the BIOS call in the driver? Does it make
sense to have some library function to do this?
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