133 lines
5 KiB
C
133 lines
5 KiB
C
#include "ibm.h"
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#include "codegen.h"
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#include "codegen_allocator.h"
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#include "codegen_backend.h"
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#include "codegen_ir.h"
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#include "codegen_reg.h"
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extern int has_ea;
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static ir_data_t ir_block;
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ir_data_t *codegen_ir_init()
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{
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ir_block.wr_pos = 0;
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// pclog("codegen_ir_init %04x:%04x\n", CS,cpu_state.pc);
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return &ir_block;
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}
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void codegen_ir_compile(ir_data_t *ir, codeblock_t *block)
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{
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int jump_target_at_end = -1;
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int c;
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codegen_reg_mark_as_required();
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codegen_reg_process_dead_list(ir);
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block_write_data = codeblock_allocator_get_ptr(block->head_mem_block);
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block_pos = 0;
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codegen_backend_prologue(block);
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for (c = 0; c < ir->wr_pos; c++)
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{
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uop_t *uop = &ir->uops[c];
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// pclog("uOP %i : %08x\n", c, uop->type);
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if (uop->type & UOP_TYPE_BARRIER)
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codegen_reg_flush_invalidate(ir, block);
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if (uop->type & UOP_TYPE_JUMP_DEST)
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{
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uop_t *uop_dest = uop;
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while (uop_dest->jump_list_next != -1)
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{
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uop_dest = &ir->uops[uop_dest->jump_list_next];
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codegen_set_jump_dest(block, uop_dest->p);
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}
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}
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if ((uop->type & UOP_MASK) == UOP_INVALID)
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continue;
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if (uop->type & UOP_TYPE_PARAMS_REGS)
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{
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codegen_reg_alloc_register(uop->dest_reg_a, uop->src_reg_a, uop->src_reg_b, uop->src_reg_c);
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if (uop->src_reg_a.reg != IREG_INVALID)
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{
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uop->src_reg_a_real = codegen_reg_alloc_read_reg(block, uop->src_reg_a, NULL);
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}
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if (uop->src_reg_b.reg != IREG_INVALID)
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{
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uop->src_reg_b_real = codegen_reg_alloc_read_reg(block, uop->src_reg_b, NULL);
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}
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if (uop->src_reg_c.reg != IREG_INVALID)
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{
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uop->src_reg_c_real = codegen_reg_alloc_read_reg(block, uop->src_reg_c, NULL);
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}
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}
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if (uop->type & UOP_TYPE_ORDER_BARRIER)
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codegen_reg_flush(ir, block);
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if (uop->type & UOP_TYPE_PARAMS_REGS)
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{
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if (uop->dest_reg_a.reg != IREG_INVALID)
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{
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uop->dest_reg_a_real = codegen_reg_alloc_write_reg(block, uop->dest_reg_a);
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}
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}
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if (!uop_handlers[uop->type & UOP_MASK])
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fatal("!uop_handlers[uop->type & UOP_MASK] %08x\n", uop->type);
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uop_handlers[uop->type & UOP_MASK](block, uop);
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if (uop->type & UOP_TYPE_JUMP)
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{
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if (uop->jump_dest_uop == ir->wr_pos)
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{
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if (jump_target_at_end == -1)
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jump_target_at_end = c;
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else
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{
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uop_t *uop_dest = &ir->uops[jump_target_at_end];
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while (uop_dest->jump_list_next != -1)
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uop_dest = &ir->uops[uop_dest->jump_list_next];
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uop_dest->jump_list_next = c;
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}
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}
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else
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{
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uop_t *uop_dest = &ir->uops[uop->jump_dest_uop];
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while (uop_dest->jump_list_next != -1)
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uop_dest = &ir->uops[uop_dest->jump_list_next];
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uop_dest->jump_list_next = c;
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ir->uops[uop->jump_dest_uop].type |= UOP_TYPE_JUMP_DEST;
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}
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}
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}
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codegen_reg_flush_invalidate(ir, block);
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if (jump_target_at_end != -1)
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{
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uop_t *uop_dest = &ir->uops[jump_target_at_end];
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while (1)
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{
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codegen_set_jump_dest(block, uop_dest->p);
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if (uop_dest->jump_list_next == -1)
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break;
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uop_dest = &ir->uops[uop_dest->jump_list_next];
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}
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}
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codegen_backend_epilogue(block);
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block_write_data = NULL;
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// if (has_ea)
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// fatal("IR compilation complete\n");
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}
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