зеркало из https://github.com/github/ruby.git
383 строки
15 KiB
C
383 строки
15 KiB
C
#ifndef UJIT_ASM_H
|
|
#define UJIT_ASM_H 1
|
|
|
|
#include <stdint.h>
|
|
#include <stddef.h>
|
|
#include <stdbool.h>
|
|
|
|
// Maximum number of labels to link
|
|
#define MAX_LABELS 32
|
|
|
|
// Maximum number of label references
|
|
#define MAX_LABEL_REFS 32
|
|
|
|
// Reference to an ASM label
|
|
typedef struct LabelRef
|
|
{
|
|
// Position in the code block where the label reference exists
|
|
uint32_t pos;
|
|
|
|
// Label which this refers to
|
|
uint32_t label_idx;
|
|
|
|
} labelref_t;
|
|
|
|
// Block of executable memory into which instructions can be written
|
|
typedef struct CodeBlock
|
|
{
|
|
// Memory block
|
|
uint8_t* mem_block;
|
|
|
|
// Memory block size
|
|
uint32_t mem_size;
|
|
|
|
/// Current writing position
|
|
uint32_t write_pos;
|
|
|
|
// Table of registered label addresses
|
|
uint32_t label_addrs[MAX_LABELS];
|
|
|
|
// Table of registered label names
|
|
// Note that these should be constant strings only
|
|
const char* label_names[MAX_LABELS];
|
|
|
|
// References to labels
|
|
labelref_t label_refs[MAX_LABEL_REFS];
|
|
|
|
// Number of labels registeered
|
|
uint32_t num_labels;
|
|
|
|
// Number of references to labels
|
|
uint32_t num_refs;
|
|
|
|
// TODO: system for disassembly/comment strings, indexed by position
|
|
|
|
// Flag to enable or disable comments
|
|
bool has_asm;
|
|
|
|
} codeblock_t;
|
|
|
|
enum OpndType
|
|
{
|
|
OPND_NONE,
|
|
OPND_REG,
|
|
OPND_IMM,
|
|
OPND_MEM
|
|
};
|
|
|
|
enum RegType
|
|
{
|
|
REG_GP,
|
|
REG_FP,
|
|
REG_XMM,
|
|
REG_IP
|
|
};
|
|
|
|
typedef struct X86Reg
|
|
{
|
|
// Register type
|
|
uint8_t reg_type;
|
|
|
|
// Register index number
|
|
uint8_t reg_no;
|
|
|
|
} x86reg_t;
|
|
|
|
typedef struct X86Mem
|
|
{
|
|
/// Base register number
|
|
uint8_t base_reg_no;
|
|
|
|
/// Index register number
|
|
uint8_t idx_reg_no;
|
|
|
|
/// SIB scale exponent value (power of two, two bits)
|
|
uint8_t scale_exp;
|
|
|
|
/// Has index register flag
|
|
bool has_idx;
|
|
|
|
// TODO: should this be here, or should we have an extra operand type?
|
|
/// IP-relative addressing flag
|
|
bool is_iprel;
|
|
|
|
/// Constant displacement from the base, not scaled
|
|
int32_t disp;
|
|
|
|
} x86mem_t;
|
|
|
|
typedef struct X86Opnd
|
|
{
|
|
// Operand type
|
|
uint8_t type;
|
|
|
|
// Size in bits
|
|
uint16_t num_bits;
|
|
|
|
union
|
|
{
|
|
// Register operand
|
|
x86reg_t reg;
|
|
|
|
// Memory operand
|
|
x86mem_t mem;
|
|
|
|
// Signed immediate value
|
|
int64_t imm;
|
|
|
|
// Unsigned immediate value
|
|
uint64_t unsig_imm;
|
|
} as;
|
|
|
|
} x86opnd_t;
|
|
|
|
// Dummy none/null operand
|
|
static const x86opnd_t NO_OPND = { OPND_NONE, 0, .as.imm = 0 };
|
|
|
|
// Instruction pointer
|
|
static const x86opnd_t RIP = { OPND_REG, 64, .as.reg = { REG_IP, 5 }};
|
|
|
|
// 64-bit GP registers
|
|
static const x86opnd_t RAX = { OPND_REG, 64, .as.reg = { REG_GP, 0 }};
|
|
static const x86opnd_t RCX = { OPND_REG, 64, .as.reg = { REG_GP, 1 }};
|
|
static const x86opnd_t RDX = { OPND_REG, 64, .as.reg = { REG_GP, 2 }};
|
|
static const x86opnd_t RBX = { OPND_REG, 64, .as.reg = { REG_GP, 3 }};
|
|
static const x86opnd_t RSP = { OPND_REG, 64, .as.reg = { REG_GP, 4 }};
|
|
static const x86opnd_t RBP = { OPND_REG, 64, .as.reg = { REG_GP, 5 }};
|
|
static const x86opnd_t RSI = { OPND_REG, 64, .as.reg = { REG_GP, 6 }};
|
|
static const x86opnd_t RDI = { OPND_REG, 64, .as.reg = { REG_GP, 7 }};
|
|
static const x86opnd_t R8 = { OPND_REG, 64, .as.reg = { REG_GP, 8 }};
|
|
static const x86opnd_t R9 = { OPND_REG, 64, .as.reg = { REG_GP, 9 }};
|
|
static const x86opnd_t R10 = { OPND_REG, 64, .as.reg = { REG_GP, 10 }};
|
|
static const x86opnd_t R11 = { OPND_REG, 64, .as.reg = { REG_GP, 11 }};
|
|
static const x86opnd_t R12 = { OPND_REG, 64, .as.reg = { REG_GP, 12 }};
|
|
static const x86opnd_t R13 = { OPND_REG, 64, .as.reg = { REG_GP, 13 }};
|
|
static const x86opnd_t R14 = { OPND_REG, 64, .as.reg = { REG_GP, 14 }};
|
|
static const x86opnd_t R15 = { OPND_REG, 64, .as.reg = { REG_GP, 15 }};
|
|
|
|
// 32-bit GP registers
|
|
static const x86opnd_t EAX = { OPND_REG, 32, .as.reg = { REG_GP, 0 }};
|
|
static const x86opnd_t ECX = { OPND_REG, 32, .as.reg = { REG_GP, 1 }};
|
|
static const x86opnd_t EDX = { OPND_REG, 32, .as.reg = { REG_GP, 2 }};
|
|
static const x86opnd_t EBX = { OPND_REG, 32, .as.reg = { REG_GP, 3 }};
|
|
static const x86opnd_t ESP = { OPND_REG, 32, .as.reg = { REG_GP, 4 }};
|
|
static const x86opnd_t EBP = { OPND_REG, 32, .as.reg = { REG_GP, 5 }};
|
|
static const x86opnd_t ESI = { OPND_REG, 32, .as.reg = { REG_GP, 6 }};
|
|
static const x86opnd_t EDI = { OPND_REG, 32, .as.reg = { REG_GP, 7 }};
|
|
static const x86opnd_t R8D = { OPND_REG, 32, .as.reg = { REG_GP, 8 }};
|
|
static const x86opnd_t R9D = { OPND_REG, 32, .as.reg = { REG_GP, 9 }};
|
|
static const x86opnd_t R10D = { OPND_REG, 32, .as.reg = { REG_GP, 10 }};
|
|
static const x86opnd_t R11D = { OPND_REG, 32, .as.reg = { REG_GP, 11 }};
|
|
static const x86opnd_t R12D = { OPND_REG, 32, .as.reg = { REG_GP, 12 }};
|
|
static const x86opnd_t R13D = { OPND_REG, 32, .as.reg = { REG_GP, 13 }};
|
|
static const x86opnd_t R14D = { OPND_REG, 32, .as.reg = { REG_GP, 14 }};
|
|
static const x86opnd_t R15D = { OPND_REG, 32, .as.reg = { REG_GP, 15 }};
|
|
|
|
// 16-bit GP registers
|
|
static const x86opnd_t AX = { OPND_REG, 16, .as.reg = { REG_GP, 0 }};
|
|
static const x86opnd_t CX = { OPND_REG, 16, .as.reg = { REG_GP, 1 }};
|
|
static const x86opnd_t DX = { OPND_REG, 16, .as.reg = { REG_GP, 2 }};
|
|
static const x86opnd_t BX = { OPND_REG, 16, .as.reg = { REG_GP, 3 }};
|
|
static const x86opnd_t SP = { OPND_REG, 16, .as.reg = { REG_GP, 4 }};
|
|
static const x86opnd_t BP = { OPND_REG, 16, .as.reg = { REG_GP, 5 }};
|
|
static const x86opnd_t SI = { OPND_REG, 16, .as.reg = { REG_GP, 6 }};
|
|
static const x86opnd_t DI = { OPND_REG, 16, .as.reg = { REG_GP, 7 }};
|
|
static const x86opnd_t R8W = { OPND_REG, 16, .as.reg = { REG_GP, 8 }};
|
|
static const x86opnd_t R9W = { OPND_REG, 16, .as.reg = { REG_GP, 9 }};
|
|
static const x86opnd_t R10W = { OPND_REG, 16, .as.reg = { REG_GP, 10 }};
|
|
static const x86opnd_t R11W = { OPND_REG, 16, .as.reg = { REG_GP, 11 }};
|
|
static const x86opnd_t R12W = { OPND_REG, 16, .as.reg = { REG_GP, 12 }};
|
|
static const x86opnd_t R13W = { OPND_REG, 16, .as.reg = { REG_GP, 13 }};
|
|
static const x86opnd_t R14W = { OPND_REG, 16, .as.reg = { REG_GP, 14 }};
|
|
static const x86opnd_t R15W = { OPND_REG, 16, .as.reg = { REG_GP, 15 }};
|
|
|
|
// 8-bit GP registers
|
|
static const x86opnd_t AL = { OPND_REG, 8, .as.reg = { REG_GP, 0 }};
|
|
static const x86opnd_t CL = { OPND_REG, 8, .as.reg = { REG_GP, 1 }};
|
|
static const x86opnd_t DL = { OPND_REG, 8, .as.reg = { REG_GP, 2 }};
|
|
static const x86opnd_t BL = { OPND_REG, 8, .as.reg = { REG_GP, 3 }};
|
|
static const x86opnd_t SPL = { OPND_REG, 8, .as.reg = { REG_GP, 4 }};
|
|
static const x86opnd_t BPL = { OPND_REG, 8, .as.reg = { REG_GP, 5 }};
|
|
static const x86opnd_t SIL = { OPND_REG, 8, .as.reg = { REG_GP, 6 }};
|
|
static const x86opnd_t DIL = { OPND_REG, 8, .as.reg = { REG_GP, 7 }};
|
|
static const x86opnd_t R8B = { OPND_REG, 8, .as.reg = { REG_GP, 8 }};
|
|
static const x86opnd_t R9B = { OPND_REG, 8, .as.reg = { REG_GP, 9 }};
|
|
static const x86opnd_t R10B = { OPND_REG, 8, .as.reg = { REG_GP, 10 }};
|
|
static const x86opnd_t R11B = { OPND_REG, 8, .as.reg = { REG_GP, 11 }};
|
|
static const x86opnd_t R12B = { OPND_REG, 8, .as.reg = { REG_GP, 12 }};
|
|
static const x86opnd_t R13B = { OPND_REG, 8, .as.reg = { REG_GP, 13 }};
|
|
static const x86opnd_t R14B = { OPND_REG, 8, .as.reg = { REG_GP, 14 }};
|
|
static const x86opnd_t R15B = { OPND_REG, 8, .as.reg = { REG_GP, 15 }};
|
|
|
|
// C argument registers
|
|
#define NUM_C_ARG_REGS 6
|
|
#define C_ARG_REGS ( (x86opnd_t[]){ RDI, RSI, RDX, RCX, R8, R9 } )
|
|
|
|
// Memory operand with base register and displacement/offset
|
|
x86opnd_t mem_opnd(uint32_t num_bits, x86opnd_t base_reg, int32_t disp);
|
|
|
|
// Scale-index-base memory operand
|
|
x86opnd_t mem_opnd_sib(uint32_t num_bits, x86opnd_t base_reg, x86opnd_t index_reg, int32_t scale, int32_t disp);
|
|
|
|
// Immediate number operand
|
|
x86opnd_t imm_opnd(int64_t val);
|
|
|
|
// Constant pointer operand
|
|
x86opnd_t const_ptr_opnd(const void *ptr);
|
|
|
|
// Struct member operand
|
|
#define member_opnd(base_reg, struct_type, member_name) mem_opnd( \
|
|
8 * sizeof(((struct_type*)0)->member_name), \
|
|
base_reg, \
|
|
offsetof(struct_type, member_name) \
|
|
)
|
|
|
|
// Struct member operand with an array index
|
|
#define member_opnd_idx(base_reg, struct_type, member_name, idx) mem_opnd( \
|
|
8 * sizeof(((struct_type*)0)->member_name[0]), \
|
|
base_reg, \
|
|
(offsetof(struct_type, member_name) + \
|
|
sizeof(((struct_type*)0)->member_name[0]) * idx) \
|
|
)
|
|
|
|
// Code block methods
|
|
uint8_t* alloc_exec_mem(uint32_t mem_size);
|
|
void cb_init(codeblock_t* cb, uint8_t* mem_block, uint32_t mem_size);
|
|
void cb_align_pos(codeblock_t* cb, uint32_t multiple);
|
|
void cb_set_pos(codeblock_t* cb, uint32_t pos);
|
|
uint8_t* cb_get_ptr(codeblock_t* cb, uint32_t index);
|
|
void cb_write_byte(codeblock_t* cb, uint8_t byte);
|
|
void cb_write_bytes(codeblock_t* cb, uint32_t num_bytes, ...);
|
|
void cb_write_int(codeblock_t* cb, uint64_t val, uint32_t num_bits);
|
|
uint32_t cb_new_label(codeblock_t* cb, const char* name);
|
|
void cb_write_label(codeblock_t* cb, uint32_t label_idx);
|
|
void cb_label_ref(codeblock_t* cb, uint32_t label_idx);
|
|
void cb_link_labels(codeblock_t* cb);
|
|
|
|
// Encode individual instructions into a code block
|
|
void add(codeblock_t* cb, x86opnd_t opnd0, x86opnd_t opnd1);
|
|
void and(codeblock_t* cb, x86opnd_t opnd0, x86opnd_t opnd1);
|
|
void call_ptr(codeblock_t* cb, x86opnd_t scratch_reg, uint8_t* dst_ptr);
|
|
void call_label(codeblock_t* cb, uint32_t label_idx);
|
|
void call(codeblock_t* cb, x86opnd_t opnd);
|
|
void cmova(codeblock_t* cb, x86opnd_t dst, x86opnd_t src);
|
|
void cmovae(codeblock_t* cb, x86opnd_t dst, x86opnd_t src);
|
|
void cmovb(codeblock_t* cb, x86opnd_t dst, x86opnd_t src);
|
|
void cmovbe(codeblock_t* cb, x86opnd_t dst, x86opnd_t src);
|
|
void cmovc(codeblock_t* cb, x86opnd_t dst, x86opnd_t src);
|
|
void cmove(codeblock_t* cb, x86opnd_t dst, x86opnd_t src);
|
|
void cmovg(codeblock_t* cb, x86opnd_t dst, x86opnd_t src);
|
|
void cmovge(codeblock_t* cb, x86opnd_t dst, x86opnd_t src);
|
|
void cmovl(codeblock_t* cb, x86opnd_t dst, x86opnd_t src);
|
|
void cmovle(codeblock_t* cb, x86opnd_t dst, x86opnd_t src);
|
|
void cmovna(codeblock_t* cb, x86opnd_t dst, x86opnd_t src);
|
|
void cmovnae(codeblock_t* cb, x86opnd_t dst, x86opnd_t src);
|
|
void cmovnb(codeblock_t* cb, x86opnd_t dst, x86opnd_t src);
|
|
void cmovnbe(codeblock_t* cb, x86opnd_t dst, x86opnd_t src);
|
|
void cmovnc(codeblock_t* cb, x86opnd_t dst, x86opnd_t src);
|
|
void cmovne(codeblock_t* cb, x86opnd_t dst, x86opnd_t src);
|
|
void cmovng(codeblock_t* cb, x86opnd_t dst, x86opnd_t src);
|
|
void cmovnge(codeblock_t* cb, x86opnd_t dst, x86opnd_t src);
|
|
void cmovnl(codeblock_t* cb, x86opnd_t dst, x86opnd_t src);
|
|
void cmovnle(codeblock_t* cb, x86opnd_t dst, x86opnd_t src);
|
|
void cmovno(codeblock_t* cb, x86opnd_t dst, x86opnd_t src);
|
|
void cmovnp(codeblock_t* cb, x86opnd_t dst, x86opnd_t src);
|
|
void cmovns(codeblock_t* cb, x86opnd_t dst, x86opnd_t src);
|
|
void cmovnz(codeblock_t* cb, x86opnd_t dst, x86opnd_t src);
|
|
void cmovo(codeblock_t* cb, x86opnd_t dst, x86opnd_t src);
|
|
void cmovp(codeblock_t* cb, x86opnd_t dst, x86opnd_t src);
|
|
void cmovpe(codeblock_t* cb, x86opnd_t dst, x86opnd_t src);
|
|
void cmovpo(codeblock_t* cb, x86opnd_t dst, x86opnd_t src);
|
|
void cmovs(codeblock_t* cb, x86opnd_t dst, x86opnd_t src);
|
|
void cmovz(codeblock_t* cb, x86opnd_t dst, x86opnd_t src);
|
|
void cmp(codeblock_t* cb, x86opnd_t opnd0, x86opnd_t opnd1);
|
|
void cdq(codeblock_t* cb);
|
|
void cqo(codeblock_t* cb);
|
|
void int3(codeblock_t* cb);
|
|
void ja(codeblock_t* cb, uint32_t label_idx);
|
|
void jae(codeblock_t* cb, uint32_t label_idx);
|
|
void jb(codeblock_t* cb, uint32_t label_idx);
|
|
void jbe(codeblock_t* cb, uint32_t label_idx);
|
|
void jc(codeblock_t* cb, uint32_t label_idx);
|
|
void je(codeblock_t* cb, uint32_t label_idx);
|
|
void jg(codeblock_t* cb, uint32_t label_idx);
|
|
void jge(codeblock_t* cb, uint32_t label_idx);
|
|
void jl(codeblock_t* cb, uint32_t label_idx);
|
|
void jle(codeblock_t* cb, uint32_t label_idx);
|
|
void jna(codeblock_t* cb, uint32_t label_idx);
|
|
void jnae(codeblock_t* cb, uint32_t label_idx);
|
|
void jnb(codeblock_t* cb, uint32_t label_idx);
|
|
void jnbe(codeblock_t* cb, uint32_t label_idx);
|
|
void jnc(codeblock_t* cb, uint32_t label_idx);
|
|
void jne(codeblock_t* cb, uint32_t label_idx);
|
|
void jng(codeblock_t* cb, uint32_t label_idx);
|
|
void jnge(codeblock_t* cb, uint32_t label_idx);
|
|
// void jnl(codeblock_t* cb, uint32_t label_idx); // this conflicts with jnl(3)
|
|
void jnle(codeblock_t* cb, uint32_t label_idx);
|
|
void jno(codeblock_t* cb, uint32_t label_idx);
|
|
void jnp(codeblock_t* cb, uint32_t label_idx);
|
|
void jns(codeblock_t* cb, uint32_t label_idx);
|
|
void jnz(codeblock_t* cb, uint32_t label_idx);
|
|
void jo(codeblock_t* cb, uint32_t label_idx);
|
|
void jp(codeblock_t* cb, uint32_t label_idx);
|
|
void jpe(codeblock_t* cb, uint32_t label_idx);
|
|
void jpo(codeblock_t* cb, uint32_t label_idx);
|
|
void js(codeblock_t* cb, uint32_t label_idx);
|
|
void jz(codeblock_t* cb, uint32_t label_idx);
|
|
void ja_ptr(codeblock_t* cb, uint8_t* ptr);
|
|
void jae_ptr(codeblock_t* cb, uint8_t* ptr);
|
|
void jb_ptr(codeblock_t* cb, uint8_t* ptr);
|
|
void jbe_ptr(codeblock_t* cb, uint8_t* ptr);
|
|
void jc_ptr(codeblock_t* cb, uint8_t* ptr);
|
|
void je_ptr(codeblock_t* cb, uint8_t* ptr);
|
|
void jg_ptr(codeblock_t* cb, uint8_t* ptr);
|
|
void jge_ptr(codeblock_t* cb, uint8_t* ptr);
|
|
void jl_ptr(codeblock_t* cb, uint8_t* ptr);
|
|
void jle_ptr(codeblock_t* cb, uint8_t* ptr);
|
|
void jna_ptr(codeblock_t* cb, uint8_t* ptr);
|
|
void jnae_ptr(codeblock_t* cb, uint8_t* ptr);
|
|
void jnb_ptr(codeblock_t* cb, uint8_t* ptr);
|
|
void jnbe_ptr(codeblock_t* cb, uint8_t* ptr);
|
|
void jnc_ptr(codeblock_t* cb, uint8_t* ptr);
|
|
void jne_ptr(codeblock_t* cb, uint8_t* ptr);
|
|
void jng_ptr(codeblock_t* cb, uint8_t* ptr);
|
|
void jnge_ptr(codeblock_t* cb, uint8_t* ptr);
|
|
void jnl_ptr(codeblock_t* cb, uint8_t* ptr);
|
|
void jnle_ptr(codeblock_t* cb, uint8_t* ptr);
|
|
void jno_ptr(codeblock_t* cb, uint8_t* ptr);
|
|
void jnp_ptr(codeblock_t* cb, uint8_t* ptr);
|
|
void jns_ptr(codeblock_t* cb, uint8_t* ptr);
|
|
void jnz_ptr(codeblock_t* cb, uint8_t* ptr);
|
|
void jo_ptr(codeblock_t* cb, uint8_t* ptr);
|
|
void jp_ptr(codeblock_t* cb, uint8_t* ptr);
|
|
void jpe_ptr(codeblock_t* cb, uint8_t* ptr);
|
|
void jpo_ptr(codeblock_t* cb, uint8_t* ptr);
|
|
void js_ptr(codeblock_t* cb, uint8_t* ptr);
|
|
void jz_ptr(codeblock_t* cb, uint8_t* ptr);
|
|
void jmp(codeblock_t* cb, uint32_t label_idx);
|
|
void jmp_ptr(codeblock_t* cb, uint8_t* ptr);
|
|
void jmp_rm(codeblock_t* cb, x86opnd_t opnd);
|
|
void jmp32(codeblock_t* cb, int32_t offset);
|
|
void lea(codeblock_t* cb, x86opnd_t dst, x86opnd_t src);
|
|
void mov(codeblock_t* cb, x86opnd_t dst, x86opnd_t src);
|
|
void movsx(codeblock_t* cb, x86opnd_t dst, x86opnd_t src);
|
|
void neg(codeblock_t* cb, x86opnd_t opnd);
|
|
void nop(codeblock_t* cb, uint32_t length);
|
|
void not(codeblock_t* cb, x86opnd_t opnd);
|
|
void or(codeblock_t* cb, x86opnd_t opnd0, x86opnd_t opnd1);
|
|
void pop(codeblock_t* cb, x86opnd_t reg);
|
|
void popfq(codeblock_t* cb);
|
|
void push(codeblock_t* cb, x86opnd_t reg);
|
|
void pushfq(codeblock_t* cb);
|
|
void ret(codeblock_t* cb);
|
|
void sal(codeblock_t* cb, x86opnd_t opnd0, x86opnd_t opnd1);
|
|
void sar(codeblock_t* cb, x86opnd_t opnd0, x86opnd_t opnd1);
|
|
void shl(codeblock_t* cb, x86opnd_t opnd0, x86opnd_t opnd1);
|
|
void shr(codeblock_t* cb, x86opnd_t opnd0, x86opnd_t opnd1);
|
|
void sub(codeblock_t* cb, x86opnd_t opnd0, x86opnd_t opnd1);
|
|
void test(codeblock_t* cb, x86opnd_t rm_opnd, x86opnd_t test_opnd);
|
|
void ud2(codeblock_t* cb);
|
|
void xor(codeblock_t* cb, x86opnd_t opnd0, x86opnd_t opnd1);
|
|
|
|
#endif
|