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https://github.com/sarah-walker-pcem/pcem.git
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108 lines
4.3 KiB
C
108 lines
4.3 KiB
C
#ifndef _CODEGEN_OPS_HELPERS_H_
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#define _CODEGEN_OPS_HELPERS_H_
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#include "386_common.h"
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#include "codegen_backend.h"
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static inline int LOAD_SP_WITH_OFFSET(ir_data_t *ir, int offset) {
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if (stack32) {
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if (offset) {
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uop_ADD_IMM(ir, IREG_eaaddr, IREG_ESP, offset);
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return IREG_eaaddr;
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} else
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return IREG_ESP;
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} else {
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if (offset) {
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uop_ADD_IMM(ir, IREG_eaaddr_W, IREG_SP, offset);
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uop_MOVZX(ir, IREG_eaaddr, IREG_eaaddr_W);
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return IREG_eaaddr;
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} else {
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uop_MOVZX(ir, IREG_eaaddr, IREG_SP);
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return IREG_eaaddr;
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}
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}
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}
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static inline int LOAD_SP(ir_data_t *ir) { return LOAD_SP_WITH_OFFSET(ir, 0); }
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static inline void ADD_SP(ir_data_t *ir, int offset) {
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if (stack32)
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uop_ADD_IMM(ir, IREG_ESP, IREG_ESP, offset);
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else
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uop_ADD_IMM(ir, IREG_SP, IREG_SP, offset);
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}
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static inline void SUB_SP(ir_data_t *ir, int offset) {
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if (stack32)
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uop_SUB_IMM(ir, IREG_ESP, IREG_ESP, offset);
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else
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uop_SUB_IMM(ir, IREG_SP, IREG_SP, offset);
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}
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static inline void fpu_POP(codeblock_t *block, ir_data_t *ir) {
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if (block->flags & CODEBLOCK_STATIC_TOP)
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uop_MOV_IMM(ir, IREG_FPU_TOP, cpu_state.TOP + 1);
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else
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uop_ADD_IMM(ir, IREG_FPU_TOP, IREG_FPU_TOP, 1);
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}
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static inline void fpu_POP2(codeblock_t *block, ir_data_t *ir) {
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if (block->flags & CODEBLOCK_STATIC_TOP)
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uop_MOV_IMM(ir, IREG_FPU_TOP, cpu_state.TOP + 2);
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else
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uop_ADD_IMM(ir, IREG_FPU_TOP, IREG_FPU_TOP, 2);
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}
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static inline void fpu_PUSH(codeblock_t *block, ir_data_t *ir) {
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if (block->flags & CODEBLOCK_STATIC_TOP)
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uop_MOV_IMM(ir, IREG_FPU_TOP, cpu_state.TOP - 1);
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else
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uop_SUB_IMM(ir, IREG_FPU_TOP, IREG_FPU_TOP, 1);
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}
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static inline void CHECK_SEG_LIMITS(codeblock_t *block, ir_data_t *ir, x86seg *seg, int addr_reg, int end_offset) {
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if ((seg == &cpu_state.seg_ds && codegen_flat_ds && !(cpu_cur_status & CPU_STATUS_NOTFLATDS)) ||
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(seg == &cpu_state.seg_ss && codegen_flat_ss && !(cpu_cur_status & CPU_STATUS_NOTFLATSS)))
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return;
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uop_CMP_JB(ir, addr_reg, ireg_seg_limit_low(seg), codegen_gpf_rout);
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if (end_offset) {
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uop_ADD_IMM(ir, IREG_temp3, addr_reg, end_offset);
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uop_CMP_JNBE(ir, IREG_temp3, ireg_seg_limit_high(seg), codegen_gpf_rout);
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} else
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uop_CMP_JNBE(ir, addr_reg, ireg_seg_limit_high(seg), codegen_gpf_rout);
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}
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static inline void LOAD_IMMEDIATE_FROM_RAM_8(codeblock_t *block, ir_data_t *ir, int dest_reg, uint32_t addr) {
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uop_MOVZX_REG_PTR_8(ir, dest_reg, get_ram_ptr(addr));
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}
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void LOAD_IMMEDIATE_FROM_RAM_16_unaligned(codeblock_t *block, ir_data_t *ir, int dest_reg, uint32_t addr);
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static inline void LOAD_IMMEDIATE_FROM_RAM_16(codeblock_t *block, ir_data_t *ir, int dest_reg, uint32_t addr) {
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if ((addr & 0xfff) == 0xfff)
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LOAD_IMMEDIATE_FROM_RAM_16_unaligned(block, ir, dest_reg, addr);
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else
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uop_MOVZX_REG_PTR_16(ir, dest_reg, get_ram_ptr(addr));
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}
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void LOAD_IMMEDIATE_FROM_RAM_32_unaligned(codeblock_t *block, ir_data_t *ir, int dest_reg, uint32_t addr);
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static inline void LOAD_IMMEDIATE_FROM_RAM_32(codeblock_t *block, ir_data_t *ir, int dest_reg, uint32_t addr) {
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if ((addr & 0xfff) >= 0xffd)
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LOAD_IMMEDIATE_FROM_RAM_32_unaligned(block, ir, dest_reg, addr);
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else
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uop_MOV_REG_PTR(ir, dest_reg, get_ram_ptr(addr));
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}
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int codegen_can_unroll_full(codeblock_t *block, ir_data_t *ir, uint32_t next_pc, uint32_t dest_addr);
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static inline int codegen_can_unroll(codeblock_t *block, ir_data_t *ir, uint32_t next_pc, uint32_t dest_addr) {
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if (block->flags & CODEBLOCK_BYTE_MASK)
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return 0;
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/*Is dest within block?*/
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if (dest_addr > next_pc)
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return 0;
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if ((cs + dest_addr) < block->pc)
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return 0;
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return codegen_can_unroll_full(block, ir, next_pc, dest_addr);
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}
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#endif /* _CODEGEN_OPS_HELPERS_H_ */
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