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42 lines
851 B
ArmAsm
42 lines
851 B
ArmAsm
#include <machine/asm.h>
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__FBSDID("$FreeBSD$");
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/*
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* This is cribbed from the Linux thinkpad-4.1 driver by
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* Thomas Hood.
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*/
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.align
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smapi32_entry: /* far pointer to SMAPI entry */
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.globl smapi32_offset
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smapi32_offset: .long 0x00000000 /* set by caller */
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smapi32_segment: .word 0x0000 /* %cs stored here */
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.text
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/*
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* smapi32(input_param, output_param)
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* struct smapi_bios_parameter *input_parm;
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* struct smapi_bios_parameter *output_parm;
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*
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* stack frame:
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* 0x00 : saved ebp
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* 0x04 : return EIP
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* 0x08 : input_parm
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* 0x0c : output_parm
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*/
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ENTRY(smapi32)
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pushl %ebp /* Save frame */
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movl %esp,%ebp
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pushl %ds
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pushl 0x0c(%ebp) /* Output Param */
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pushl %ds
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pushl 0x08(%ebp) /* Input Param */
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movl $0,%eax /* Clear EAX (return 0) */
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movw %cs,smapi32_segment /* Save CS */
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lcall *(smapi32_offset)
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leave
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ret
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