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libjit/jit/jit-gen-x86.h  view on Meta::CPAN

	do {	\
		*(inst)++ = (unsigned char) 0x0f;	\
		if ((is_signed))	\
			*(inst)++ = x86_cc_signed_map [(cond)] - 0x30;	\
		else	\
			*(inst)++ = x86_cc_unsigned_map [(cond)] - 0x30;	\
		x86_reg_emit ((inst), (dreg), (reg));	\
	} while (0)

#define x86_cmov_mem(inst,cond,is_signed,reg,mem)	\
	do {	\
		*(inst)++ = (unsigned char) 0x0f;	\
		if ((is_signed))	\
			*(inst)++ = x86_cc_signed_map [(cond)] - 0x30;	\
		else	\
			*(inst)++ = x86_cc_unsigned_map [(cond)] - 0x30;	\
		x86_mem_emit ((inst), (reg), (mem));	\
	} while (0)

#define x86_cmov_membase(inst,cond,is_signed,reg,basereg,disp)	\
	do {	\
		*(inst)++ = (unsigned char) 0x0f;	\
		if ((is_signed))	\
			*(inst)++ = x86_cc_signed_map [(cond)] - 0x30;	\
		else	\
			*(inst)++ = x86_cc_unsigned_map [(cond)] - 0x30;	\
		x86_membase_emit ((inst), (reg), (basereg), (disp));	\
	} while (0)

#define x86_enter(inst,framesize)	\
	do {	\
		*(inst)++ = (unsigned char)0xc8;	\
		x86_imm_emit16 ((inst), (framesize));	\
		*(inst)++ = 0;	\
	} while (0)
	
#define x86_leave(inst) do { *(inst)++ = (unsigned char)0xc9; } while (0)
#define x86_sahf(inst)  do { *(inst)++ = (unsigned char)0x9e; } while (0)

#define x86_fsin(inst) do { *(inst)++ = (unsigned char)0xd9; *(inst)++ = (unsigned char)0xfe; } while (0)
#define x86_fcos(inst) do { *(inst)++ = (unsigned char)0xd9; *(inst)++ = (unsigned char)0xff; } while (0)
#define x86_fabs(inst) do { *(inst)++ = (unsigned char)0xd9; *(inst)++ = (unsigned char)0xe1; } while (0)
#define x86_ftst(inst) do { *(inst)++ = (unsigned char)0xd9; *(inst)++ = (unsigned char)0xe4; } while (0)
#define x86_fxam(inst) do { *(inst)++ = (unsigned char)0xd9; *(inst)++ = (unsigned char)0xe5; } while (0)
#define x86_fpatan(inst) do { *(inst)++ = (unsigned char)0xd9; *(inst)++ = (unsigned char)0xf3; } while (0)
#define x86_fprem(inst) do { *(inst)++ = (unsigned char)0xd9; *(inst)++ = (unsigned char)0xf8; } while (0)
#define x86_fprem1(inst) do { *(inst)++ = (unsigned char)0xd9; *(inst)++ = (unsigned char)0xf5; } while (0)
#define x86_frndint(inst) do { *(inst)++ = (unsigned char)0xd9; *(inst)++ = (unsigned char)0xfc; } while (0)
#define x86_fsqrt(inst) do { *(inst)++ = (unsigned char)0xd9; *(inst)++ = (unsigned char)0xfa; } while (0)
#define x86_fptan(inst) do { *(inst)++ = (unsigned char)0xd9; *(inst)++ = (unsigned char)0xf2; } while (0)

#define x86_padding(inst,size)	\
	do {	\
		switch ((size)) {	\
		case 1: x86_nop ((inst)); break;	\
		case 2: *(inst)++ = 0x8b;	\
			*(inst)++ = 0xc0; break;	\
		case 3: *(inst)++ = 0x8d; *(inst)++ = 0x6d;	\
			*(inst)++ = 0x00; break;	\
		case 4: *(inst)++ = 0x8d; *(inst)++ = 0x64;	\
			*(inst)++ = 0x24; *(inst)++ = 0x00;	\
			break;	\
		case 5: *(inst)++ = 0x8d; *(inst)++ = 0x64;	\
			*(inst)++ = 0x24; *(inst)++ = 0x00;	\
			x86_nop ((inst)); break;	\
		case 6: *(inst)++ = 0x8d; *(inst)++ = 0xad;	\
			*(inst)++ = 0x00; *(inst)++ = 0x00;	\
			*(inst)++ = 0x00; *(inst)++ = 0x00;	\
			break;	\
		case 7: *(inst)++ = 0x8d; *(inst)++ = 0xa4;	\
			*(inst)++ = 0x24; *(inst)++ = 0x00;	\
			*(inst)++ = 0x00; *(inst)++ = 0x00;	\
			*(inst)++ = 0x00; break;	\
		default: jit_assert (0);	\
		}	\
	} while (0)

#define x86_prolog(inst,frame_size,reg_mask)	\
	do {	\
		unsigned i, m = 1;	\
		x86_enter ((inst), (frame_size));	\
		for (i = 0; i < X86_NREG; ++i, m <<= 1) {	\
			if ((reg_mask) & m)	\
				x86_push_reg ((inst), i);	\
		}	\
	} while (0)

#define x86_epilog(inst,reg_mask)	\
	do {	\
		unsigned i, m = 1 << X86_EDI;	\
		for (i = X86_EDI; m != 0; i--, m=m>>1) {	\
			if ((reg_mask) & m)	\
				x86_pop_reg ((inst), i);	\
		}	\
		x86_leave ((inst));	\
		x86_ret ((inst));	\
	} while (0)

#endif /* JIT_GEN_X86_H */