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/* SPDX-License-Identifier: GPL-2.0-only */
/* Functions to call MRC.bin from x86_64 */
.text
.code32
.section ".text.mrc_wrapper", "ax", @progbits
.globl mrc_wrapper
mrc_wrapper:
/* Set up new stack frame */
pushal
mov %esp, %ebp
/* Align stack */
andl $0xfffffff0, %esp
movl 36(%ebp), %ebx /* Get function pointer */
movl 40(%ebp), %eax /* Get argument */
call *%ebx
/* Place return value on stack so that popal fetches it */
movl %eax, 28(%ebp)
/* Restore stack pointer */
mov %ebp, %esp
popal
ret
/*
* Callback for MRC to print a character on the console.
* As MRC is x86_32 call into long mode and use the x86_64
* function do_putchar to print to console.
*/
#include <cpu/x86/64bit/prot2long.inc>
prot2lm_wrapper do_putchar
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