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// This file is parsed by tool/mjit/generate.rb to generate mjit_c.rb
#ifndef MJIT_C_H
#define MJIT_C_H
#include "ruby/internal/config.h"
#include "vm_core.h"
#include "vm_callinfo.h"
#include "builtin.h"
#include "ccan/list/list.h"
#include "mjit.h"
#include "shape.h"
// Macros to check if a position is already compiled using compile_status.stack_size_for_pos
#define NOT_COMPILED_STACK_SIZE -1
#define ALREADY_COMPILED_P(status, pos) (status->stack_size_for_pos[pos] != NOT_COMPILED_STACK_SIZE)
// Linked list of struct rb_mjit_unit.
struct rb_mjit_unit_list {
struct ccan_list_head head;
int length; // the list length
};
enum rb_mjit_unit_type {
// Single-ISEQ unit for unit_queue
MJIT_UNIT_ISEQ = 0,
// Multi-ISEQ unit for mjit_batch
MJIT_UNIT_BATCH = 1,
// All-ISEQ unit for mjit_compact
MJIT_UNIT_COMPACT = 2,
};
// The unit structure that holds metadata of ISeq for MJIT.
// TODO: Use different structs for ISEQ and BATCH/COMPACT
struct rb_mjit_unit {
struct ccan_list_node unode;
// Unique order number of unit.
int id;
// Type of this unit
enum rb_mjit_unit_type type;
/* MJIT_UNIT_ISEQ */
// ISEQ for a non-batch unit
rb_iseq_t *iseq;
// Only used by unload_units. Flag to check this unit is currently on stack or not.
bool used_code_p;
// mjit_compile's optimization switches
struct rb_mjit_compile_info compile_info;
// captured CC values, they should be marked with iseq.
const struct rb_callcache **cc_entries;
// ISEQ_BODY(iseq)->ci_size + ones of inlined iseqs
unsigned int cc_entries_size;
/* MJIT_UNIT_BATCH, MJIT_UNIT_COMPACT */
// Dlopen handle of the loaded object file.
void *handle;
// Units compacted by this batch
struct rb_mjit_unit_list units; // MJIT_UNIT_BATCH only
};
// Storage to keep data which is consistent in each conditional branch.
// This is created and used for one `compile_insns` call and its values
// should be copied for extra `compile_insns` call.
struct compile_branch {
unsigned int stack_size; // this simulates sp (stack pointer) of YARV
bool finish_p; // if true, compilation in this branch should stop and let another branch to be compiled
};
// For propagating information needed for lazily pushing a frame.
struct inlined_call_context {
int orig_argc; // ci->orig_argc
VALUE me; // vm_cc_cme(cc)
int param_size; // def_iseq_ptr(vm_cc_cme(cc)->def)->body->param.size
int local_size; // def_iseq_ptr(vm_cc_cme(cc)->def)->body->local_table_size
};
// Storage to keep compiler's status. This should have information
// which is global during one `mjit_compile` call. Ones conditional
// in each branch should be stored in `compile_branch`.
struct compile_status {
bool success; // has true if compilation has had no issue
int *stack_size_for_pos; // stack_size_for_pos[pos] has stack size for the position (otherwise -1)
// If true, JIT-ed code will use local variables to store pushed values instead of
// using VM's stack and moving stack pointer.
bool local_stack_p;
// Index of call cache entries captured to compiled_iseq to be marked on GC
int cc_entries_index;
// A pointer to root (i.e. not inlined) iseq being compiled.
const struct rb_iseq_constant_body *compiled_iseq;
int compiled_id; // Just a copy of compiled_iseq->jit_unit->id
// Mutated optimization levels
struct rb_mjit_compile_info *compile_info;
// If `inlined_iseqs[pos]` is not NULL, `mjit_compile_body` tries to inline ISeq there.
const struct rb_iseq_constant_body **inlined_iseqs;
struct inlined_call_context inline_context;
};
#endif /* MJIT_C_H */
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