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https://github.com/ctm/syn68k.git
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85 lines
2.1 KiB
C
85 lines
2.1 KiB
C
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#ifndef _HOST_NATIVE_H_
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#define _HOST_NATIVE_H_
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#define REG_EAX 0
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#define REG_ECX 1
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#define REG_EDX 2
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#define REG_EBX 3
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#define REG_ESP 4
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#define REG_EBP 5
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#define REG_ESI 6
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#define REG_EDI 7
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#define REG_AX 0
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#define REG_CX 1
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#define REG_DX 2
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#define REG_BX 3
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#define REG_SP 4
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#define REG_BP 5
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#define REG_SI 6
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#define REG_DI 7
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#define REG_AL 0
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#define REG_CL 1
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#define REG_DL 2
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#define REG_BL 3
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#define REG_AH 4
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#define REG_CH 5
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#define REG_DH 6
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#define REG_BH 7
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/* Don't allow %ebp or %esp. These registers are strange because in
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* some situations they are used as "escape" registers on the i386.
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* We could work around this by only allowing them when they are legal,
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* but legend has it that we can't use either under DPMI because of
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* a strange stack segment value.
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*/
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#define ALLOCATABLE_REG_MASK ((host_reg_mask_t) ( (1 << REG_EAX) \
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| (1 << REG_EBX) \
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| (1 << REG_ECX) \
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| (1 << REG_EDX) \
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| (1 << REG_ESI) \
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| (1 << REG_EDI)))
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/* Any of the 6 regs we free up to use. */
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#define REGSET_ALL ALLOCATABLE_REG_MASK
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/* Only those regs which are byte-addressable: %eax, %ebx, %ecx, %edx. */
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#define REGSET_BYTE ((host_reg_mask_t) ( (1 << REG_EAX) \
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| (1 << REG_EBX) \
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| (1 << REG_ECX) \
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| (1 << REG_EDX)))
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#define REGSET_EMPTY 0
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#define NUM_HOST_REGS 8
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typedef uint8 host_code_t;
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extern uint8 have_i486_p;
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#define NATIVE_TO_SYNTH_STUB_BYTES 10
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#define NATIVE_TO_SYNTH_STUB_WORDS \
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(((NATIVE_TO_SYNTH_STUB_BYTES + 1) / 2 + 1) & ~1)/* Must be even # of words. */
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#ifdef SYNCHRONOUS_INTERRUPTS
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# ifdef USE_BIOS_TIMER
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# define CHECK_INTERRUPT_STUB_BYTES 18
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# else /* !USE_BIOS_TIMER */
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# if defined (__CHECKER__)
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# define CHECK_INTERRUPT_STUB_BYTES 18
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# else /* !__CHECKER__ */
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# define CHECK_INTERRUPT_STUB_BYTES 14
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# endif /* !__CHECKER__ */
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# endif /* !USE_BIOS_TIMER */
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#else
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# define CHECK_INTERRUPT_STUB_BYTES 0
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#endif /* !SYNCHRONOUS_INTERRUPTS */
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#define HOST_SWAP16(r) \
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i386_rorw_imm_reg (c, codep, cc_spill_if_changed, M68K_CC_NONE, NO_REG, 8, (r))
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#define HOST_SWAP32(r) \
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host_swap32 (c, codep, cc_spill_if_changed, M68K_CC_NONE, NO_REG, (r))
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#endif /* !_HOST_NATIVE_H_ */
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