6aabed1c77
- Remove CS and IP registers from x86bios.h. They have no use for us. - Adjust register dump to make it little bit more useful for debugging. Submitted by: paradox (ddkprog yahoo com)[1] (initial version)
135 lines
3.0 KiB
C
135 lines
3.0 KiB
C
/*-
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* Written by paradox <ddkprog@yahoo.com>
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* Public domain.
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*
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* x86 registers were borrowed from x86emu.h x86emu_regs.h
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* for compatability.
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*
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* $FreeBSD$
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*/
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#ifndef _X86BIOS_H_
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#define _X86BIOS_H_
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#include <sys/types.h>
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#include <sys/endian.h>
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#include <sys/systm.h>
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#ifdef __BIG_ENDIAN__
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struct x86_register32 {
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uint32_t e_reg;
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};
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struct x86_register16 {
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uint16_t filler0;
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uint16_t x_reg;
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};
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struct x86_register8 {
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uint8_t filler0, filler1;
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uint8_t h_reg, l_reg;
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};
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#else /* !__BIG_ENDIAN__ */
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struct x86_register32 {
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uint32_t e_reg;
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};
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struct x86_register16 {
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uint16_t x_reg;
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};
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struct x86_register8 {
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uint8_t l_reg, h_reg;
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};
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#endif /* __BIG_ENDIAN__ */
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union x86_register {
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struct x86_register32 I32_reg;
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struct x86_register16 I16_reg;
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struct x86_register8 I8_reg;
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};
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struct x86regs {
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uint16_t padding; /* CS is unused. */
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uint16_t register_ds;
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uint16_t register_es;
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uint16_t register_fs;
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uint16_t register_gs;
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uint16_t register_ss;
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uint32_t register_flags;
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union x86_register register_a;
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union x86_register register_b;
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union x86_register register_c;
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union x86_register register_d;
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union x86_register register_sp;
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union x86_register register_bp;
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union x86_register register_si;
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union x86_register register_di;
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};
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typedef struct x86regs x86regs_t;
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/* 8 bit registers */
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#define R_AH register_a.I8_reg.h_reg
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#define R_AL register_a.I8_reg.l_reg
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#define R_BH register_b.I8_reg.h_reg
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#define R_BL register_b.I8_reg.l_reg
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#define R_CH register_c.I8_reg.h_reg
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#define R_CL register_c.I8_reg.l_reg
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#define R_DH register_d.I8_reg.h_reg
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#define R_DL register_d.I8_reg.l_reg
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/* 16 bit registers */
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#define R_AX register_a.I16_reg.x_reg
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#define R_BX register_b.I16_reg.x_reg
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#define R_CX register_c.I16_reg.x_reg
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#define R_DX register_d.I16_reg.x_reg
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/* 32 bit extended registers */
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#define R_EAX register_a.I32_reg.e_reg
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#define R_EBX register_b.I32_reg.e_reg
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#define R_ECX register_c.I32_reg.e_reg
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#define R_EDX register_d.I32_reg.e_reg
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/* special registers */
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#define R_SP register_sp.I16_reg.x_reg
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#define R_BP register_bp.I16_reg.x_reg
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#define R_SI register_si.I16_reg.x_reg
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#define R_DI register_di.I16_reg.x_reg
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#define R_FLG register_flags
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/* special registers */
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#define R_ESP register_sp.I32_reg.e_reg
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#define R_EBP register_bp.I32_reg.e_reg
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#define R_ESI register_si.I32_reg.e_reg
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#define R_EDI register_di.I32_reg.e_reg
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#define R_EFLG register_flags
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/* segment registers */
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#define R_DS register_ds
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#define R_SS register_ss
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#define R_ES register_es
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#define R_FS register_fs
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#define R_GS register_gs
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#define SEG_ADDR(x) (((x) >> 4) & 0x00F000)
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#define SEG_OFF(x) ((x) & 0x0FFFF)
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#define FARP(x) ((le32toh(x) & 0xffff) + ((le32toh(x) >> 12) & 0xffff00))
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#define MAPPED_MEMORY_SIZE (1024 * 1024)
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#define PAGE_RESERV (4096 * 5)
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__BEGIN_DECLS
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void *x86bios_alloc(int count, int *segs);
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void x86bios_free(void *pbuf, int count);
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void x86bios_intr(struct x86regs *regs, int intno);
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void *x86bios_offset(uint32_t offs);
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__END_DECLS
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#endif /* !_X86BIOS_H_ */
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