51 lines
1.1 KiB
C
51 lines
1.1 KiB
C
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#ifndef UJIT_CORE_H
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#define UJIT_CORE_H 1
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#include "stddef.h"
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#include "ujit_asm.h"
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// Register uJIT receives the CFP and EC into
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#define REG_CFP RDI
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#define REG_EC RSI
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// Register uJIT loads the SP into
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#define REG_SP RDX
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// Scratch registers used by uJIT
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#define REG0 RAX
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#define REG1 RCX
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#define REG0_32 EAX
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#define REG1_32 ECX
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// Code generation context
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typedef struct ctx_struct
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{
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// Current PC
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VALUE *pc;
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// Difference between the current stack pointer and actual stack top
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int32_t stack_diff;
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// The iseq that owns the region that is compiling
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const rb_iseq_t *iseq;
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// Index in the iseq of the opcode we are replacing
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size_t start_idx;
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// The start of the generated code
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uint8_t *code_ptr;
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// Whether we know self is a heap object
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bool self_is_object;
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} ctx_t;
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int ctx_get_opcode(ctx_t *ctx);
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VALUE ctx_get_arg(ctx_t* ctx, size_t arg_idx);
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x86opnd_t ctx_sp_opnd(ctx_t* ctx, int32_t offset_bytes);
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x86opnd_t ctx_stack_push(ctx_t* ctx, size_t n);
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x86opnd_t ctx_stack_pop(ctx_t* ctx, size_t n);
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x86opnd_t ctx_stack_opnd(ctx_t* ctx, int32_t idx);
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#endif // #ifndef UJIT_CORE_H
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