diff options
Diffstat (limited to 'sys/dev/x86bios/x86bios.h')
| -rw-r--r-- | sys/dev/x86bios/x86bios.h | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/sys/dev/x86bios/x86bios.h b/sys/dev/x86bios/x86bios.h new file mode 100644 index 0000000..3785f3c --- /dev/null +++ b/sys/dev/x86bios/x86bios.h @@ -0,0 +1,138 @@ +/*- + * Written by paradox <ddkprog@yahoo.com> + * Public domain. + * + * x86 registers were borrowed from x86emu.h x86emu_regs.h + * for compatability. + * + * $FreeBSD$ + */ + +#ifndef _X86BIOS_H_ +#define _X86BIOS_H_ + +#include <sys/types.h> +#include <sys/endian.h> +#include <sys/systm.h> + +#ifdef __BIG_ENDIAN__ + +struct x86_register32 { + uint32_t e_reg; +}; + +struct x86_register16 { + uint16_t filler0; + uint16_t x_reg; +}; + +struct x86_register8 { + uint8_t filler0, filler1; + uint8_t h_reg, l_reg; +}; + +#else /* !__BIG_ENDIAN__ */ + +struct x86_register32 { + uint32_t e_reg; +}; + +struct x86_register16 { + uint16_t x_reg; +}; + +struct x86_register8 { + uint8_t l_reg, h_reg; +}; + +#endif /* __BIG_ENDIAN__ */ + +union x86_register { + struct x86_register32 I32_reg; + struct x86_register16 I16_reg; + struct x86_register8 I8_reg; +}; + +struct x86regs { + uint16_t register_cs; + uint16_t register_ds; + uint16_t register_es; + uint16_t register_fs; + uint16_t register_gs; + uint16_t register_ss; + uint32_t register_flags; + union x86_register register_a; + union x86_register register_b; + union x86_register register_c; + union x86_register register_d; + + union x86_register register_sp; + union x86_register register_bp; + union x86_register register_si; + union x86_register register_di; + union x86_register register_ip; +}; + +typedef struct x86regs x86regs_t; + +/* 8 bit registers */ +#define R_AH register_a.I8_reg.h_reg +#define R_AL register_a.I8_reg.l_reg +#define R_BH register_b.I8_reg.h_reg +#define R_BL register_b.I8_reg.l_reg +#define R_CH register_c.I8_reg.h_reg +#define R_CL register_c.I8_reg.l_reg +#define R_DH register_d.I8_reg.h_reg +#define R_DL register_d.I8_reg.l_reg + +/* 16 bit registers */ +#define R_AX register_a.I16_reg.x_reg +#define R_BX register_b.I16_reg.x_reg +#define R_CX register_c.I16_reg.x_reg +#define R_DX register_d.I16_reg.x_reg + +/* 32 bit extended registers */ +#define R_EAX register_a.I32_reg.e_reg +#define R_EBX register_b.I32_reg.e_reg +#define R_ECX register_c.I32_reg.e_reg +#define R_EDX register_d.I32_reg.e_reg + +/* special registers */ +#define R_SP register_sp.I16_reg.x_reg +#define R_BP register_bp.I16_reg.x_reg +#define R_SI register_si.I16_reg.x_reg +#define R_DI register_di.I16_reg.x_reg +#define R_IP register_ip.I16_reg.x_reg +#define R_FLG register_flags + +/* special registers */ +#define R_ESP register_sp.I32_reg.e_reg +#define R_EBP register_bp.I32_reg.e_reg +#define R_ESI register_si.I32_reg.e_reg +#define R_EDI register_di.I32_reg.e_reg +#define R_EIP register_ip.I32_reg.e_reg +#define R_EFLG register_flags + +/* segment registers */ +#define R_CS register_cs +#define R_DS register_ds +#define R_SS register_ss +#define R_ES register_es +#define R_FS register_fs +#define R_GS register_gs + +#define SEG_ADDR(x) (((x) >> 4) & 0x00F000) +#define SEG_OFF(x) ((x) & 0x0FFFF) +#define FARP(x) ((le32toh(x) & 0xffff) + ((le32toh(x) >> 12) & 0xffff00)) + +#define MAPPED_MEMORY_SIZE 0xc00000 +#define PAGE_RESERV (4096*5) + +__BEGIN_DECLS +void x86biosCall(struct x86regs *regs, int intno); +void *x86biosAlloc(int count, int *segs); +void x86biosFree(void *pbuf, int count); +void *x86biosOffs(uint32_t offs); +__END_DECLS + +#endif /* !_X86BIOS_H_ */ |
