1 #define EMIT(x) *tcache_ptr++ = x
3 #define A_R14M (1 << 14)
7 /* addressing mode 1 */
13 #define A_AM1_IMM(ror2,imm8) (((ror2)<<8) | (imm8) | 0x02000000)
14 #define A_AM1_REG_XIMM(shift_imm,shift_op,rm) (((shift_imm)<<7) | ((shift_op)<<5) | (rm))
16 /* data processing op */
20 #define EOP_C_DOP_X(cond,op,s,rn,rd,shifter_op) \
21 EMIT(((cond)<<28) | ((op)<< 21) | ((s)<<20) | ((rn)<<16) | ((rd)<<12) | (shifter_op))
23 #define EOP_C_DOP_IMM(cond,op,s,rn,rd,ror2,imm8) EOP_C_DOP_X(cond,op,s,rn,rd,A_AM1_IMM(ror2,imm8))
24 #define EOP_C_DOP_REG(cond,op,s,rn,rd,shift_imm,shift_op,rm) EOP_C_DOP_X(cond,op,s,rn,rd,A_AM1_REG_XIMM(shift_imm,shift_op,rm))
26 #define EOP_MOV_IMM(s, rd,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_MOV,s, 0,rd,ror2,imm8)
27 #define EOP_ORR_IMM(s,rn,rd,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_ORR,s,rn,rd,ror2,imm8)
29 #define EOP_MOV_REG(s, rd,shift_imm,shift_op,rm) EOP_C_DOP_REG(A_COND_AL,A_OP_MOV,s, 0,rd,shift_imm,shift_op,rm)
31 #define EOP_MOV_REG_SIMPLE(rd,rm) EOP_MOV_REG(0,rd,0,A_AM1_LSL,rm)
34 #define EOP_C_XXR_IMM(cond,u,b,l,rn,rd,offset_12) \
35 EMIT(((cond)<<28) | 0x05000000 | ((u)<<23) | ((b)<<22) | ((l)<<20) | ((rn)<<16) | ((rd)<<12) | (offset_12))
37 #define EOP_LDR_IMM( rd,rn,offset_12) EOP_C_XXR_IMM(A_COND_AL,1,0,1,rn,rd,offset_12)
38 #define EOP_LDR_NEGIMM(rd,rn,offset_12) EOP_C_XXR_IMM(A_COND_AL,0,0,1,rn,rd,offset_12)
39 #define EOP_LDR_SIMPLE(rd,rn) EOP_C_XXR_IMM(A_COND_AL,1,0,1,rn,rd,0)
40 #define EOP_STR_SIMPLE(rd,rn) EOP_C_XXR_IMM(A_COND_AL,1,0,0,rn,rd,0)
43 #define EOP_XXM(cond,p,u,s,w,l,rn,list) \
44 EMIT(((cond)<<28) | (1<<27) | ((p)<<24) | ((u)<<23) | ((s)<<22) | ((w)<<21) | ((l)<<20) | ((rn)<<16) | (list))
46 #define EOP_STMFD_ST(list) EOP_XXM(A_COND_AL,1,0,0,1,0,13,list)
47 #define EOP_LDMFD_ST(list) EOP_XXM(A_COND_AL,0,1,0,1,1,13,list)
50 #define EOP_C_BX(cond,rm) \
51 EMIT(((cond)<<28) | 0x012fff10 | (rm))
53 #define EOP_BX(rm) EOP_C_BX(A_COND_AL,rm)
56 static void emit_mov_const16(int d, unsigned int val)
60 EOP_MOV_IMM(0, d, 24/2, (val>>8)&0xff);
63 if ((val & 0xff) || !need_or)
64 EOP_C_DOP_IMM(A_COND_AL,need_or ? A_OP_ORR : A_OP_MOV, 0, d, d, 0, val&0xff);
67 static void emit_block_prologue(void)
70 EOP_STMFD_ST(A_R14M); // stmfd r13!, {r14}
73 static void emit_block_epilogue(unsigned int *block_start, int icount)
75 int back = (tcache_ptr - block_start) + 2;
76 back += 3; // g_cycles
77 EOP_LDR_NEGIMM(2,15,back<<2); // ldr r2,[pc,#back]
78 emit_mov_const16(3, icount);
79 EOP_STR_SIMPLE(3,2); // str r3,[r2]
81 EOP_LDMFD_ST(A_R14M); // ldmfd r13!, {r14}
85 static void emit_pc_inc(unsigned int *block_start, int pc)
87 int back = (tcache_ptr - block_start) + 2;
89 EOP_LDR_NEGIMM(2,15,back<<2); // ldr r2,[pc,#back]
90 emit_mov_const16(3, pc);
91 EOP_STR_SIMPLE(3,2); // str r3,[r2]
94 static void emit_call(unsigned int *block_start, unsigned int op1)
96 int back = (tcache_ptr - block_start) + 2;
97 back += 1; // func table
98 EOP_LDR_NEGIMM(2,15,back<<2); // ldr r2,[pc,#back]
99 EOP_MOV_REG_SIMPLE(14,15); // mov lr,pc
100 EOP_LDR_IMM(15,2,op1<<2); // ldr pc,[r2,#op1]