X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=Pico%2Fcarthw%2Fsvp%2Fgen_arm.c;h=89db6a98bf54cbd72b35955b940919dd02815dc0;hb=67c81ee2e41f86851aeb221aed911980c07274bf;hp=30e8f84866b252250f68947b2a59ecfb10a6c4cf;hpb=5c129565f0646a1ac7f9c57fd3425f3246aecb84;p=picodrive.git diff --git a/Pico/carthw/svp/gen_arm.c b/Pico/carthw/svp/gen_arm.c index 30e8f84..89db6a9 100644 --- a/Pico/carthw/svp/gen_arm.c +++ b/Pico/carthw/svp/gen_arm.c @@ -1,8 +1,26 @@ +// Basic macros to emit ARM instructions and some utils + +// (c) Copyright 2008, Grazvydas "notaz" Ignotas +// Free for non-commercial use. + #define EMIT(x) *tcache_ptr++ = x +#define A_R4M (1 << 4) +#define A_R5M (1 << 5) +#define A_R6M (1 << 6) +#define A_R7M (1 << 7) +#define A_R8M (1 << 8) +#define A_R9M (1 << 9) +#define A_R10M (1 << 10) +#define A_R11M (1 << 11) #define A_R14M (1 << 14) #define A_COND_AL 0xe +#define A_COND_EQ 0x0 +#define A_COND_NE 0x1 +#define A_COND_MI 0x4 +#define A_COND_PL 0x5 +#define A_COND_LE 0xd /* addressing mode 1 */ #define A_AM1_LSL 0 @@ -12,32 +30,95 @@ #define A_AM1_IMM(ror2,imm8) (((ror2)<<8) | (imm8) | 0x02000000) #define A_AM1_REG_XIMM(shift_imm,shift_op,rm) (((shift_imm)<<7) | ((shift_op)<<5) | (rm)) +#define A_AM1_REG_XREG(rs,shift_op,rm) (((rs)<<8) | ((shift_op)<<5) | 0x10 | (rm)) /* data processing op */ +#define A_OP_AND 0x0 +#define A_OP_EOR 0x1 +#define A_OP_SUB 0x2 +#define A_OP_RSB 0x3 +#define A_OP_ADD 0x4 +#define A_OP_TST 0x8 +#define A_OP_CMP 0xa #define A_OP_ORR 0xc #define A_OP_MOV 0xd +#define A_OP_BIC 0xe #define EOP_C_DOP_X(cond,op,s,rn,rd,shifter_op) \ EMIT(((cond)<<28) | ((op)<< 21) | ((s)<<20) | ((rn)<<16) | ((rd)<<12) | (shifter_op)) -#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)) -#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)) +#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)) +#define EOP_C_DOP_REG_XIMM(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)) +#define EOP_C_DOP_REG_XREG(cond,op,s,rn,rd,rs, shift_op,rm) EOP_C_DOP_X(cond,op,s,rn,rd,A_AM1_REG_XREG(rs, shift_op,rm)) + +#define EOP_MOV_IMM(rd, ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_MOV,0, 0,rd,ror2,imm8) +#define EOP_ORR_IMM(rd,rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_ORR,0,rn,rd,ror2,imm8) +#define EOP_ADD_IMM(rd,rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_ADD,0,rn,rd,ror2,imm8) +#define EOP_BIC_IMM(rd,rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_BIC,0,rn,rd,ror2,imm8) +#define EOP_AND_IMM(rd,rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_AND,0,rn,rd,ror2,imm8) +#define EOP_SUB_IMM(rd,rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_SUB,0,rn,rd,ror2,imm8) +#define EOP_TST_IMM( rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_TST,1,rn, 0,ror2,imm8) +#define EOP_CMP_IMM( rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_CMP,1,rn, 0,ror2,imm8) +#define EOP_RSB_IMM(rd,rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_RSB,0,rn,rd,ror2,imm8) + +#define EOP_MOV_REG(s, rd,shift_imm,shift_op,rm) EOP_C_DOP_REG_XIMM(A_COND_AL,A_OP_MOV,s, 0,rd,shift_imm,shift_op,rm) +#define EOP_ORR_REG(s,rn,rd,shift_imm,shift_op,rm) EOP_C_DOP_REG_XIMM(A_COND_AL,A_OP_ORR,s,rn,rd,shift_imm,shift_op,rm) +#define EOP_ADD_REG(s,rn,rd,shift_imm,shift_op,rm) EOP_C_DOP_REG_XIMM(A_COND_AL,A_OP_ADD,s,rn,rd,shift_imm,shift_op,rm) +#define EOP_TST_REG( rn, shift_imm,shift_op,rm) EOP_C_DOP_REG_XIMM(A_COND_AL,A_OP_TST,1,rn, 0,shift_imm,shift_op,rm) + +#define EOP_MOV_REG2(s, rd,rs,shift_op,rm) EOP_C_DOP_REG_XREG(A_COND_AL,A_OP_MOV,s, 0,rd,rs,shift_op,rm) +#define EOP_ADD_REG2(s,rn,rd,rs,shift_op,rm) EOP_C_DOP_REG_XREG(A_COND_AL,A_OP_ADD,s,rn,rd,rs,shift_op,rm) +#define EOP_SUB_REG2(s,rn,rd,rs,shift_op,rm) EOP_C_DOP_REG_XREG(A_COND_AL,A_OP_SUB,s,rn,rd,rs,shift_op,rm) + +#define EOP_MOV_REG_SIMPLE(rd,rm) EOP_MOV_REG(0,rd,0,A_AM1_LSL,rm) +#define EOP_MOV_REG_LSL(rd, rm,shift_imm) EOP_MOV_REG(0,rd,shift_imm,A_AM1_LSL,rm) +#define EOP_MOV_REG_LSR(rd, rm,shift_imm) EOP_MOV_REG(0,rd,shift_imm,A_AM1_LSR,rm) +#define EOP_MOV_REG_ASR(rd, rm,shift_imm) EOP_MOV_REG(0,rd,shift_imm,A_AM1_ASR,rm) +#define EOP_MOV_REG_ROR(rd, rm,shift_imm) EOP_MOV_REG(0,rd,shift_imm,A_AM1_ROR,rm) + +#define EOP_ORR_REG_SIMPLE(rd,rm) EOP_ORR_REG(0,rd,rd,0,A_AM1_LSL,rm) +#define EOP_ORR_REG_LSL(rd,rn,rm,shift_imm) EOP_ORR_REG(0,rn,rd,shift_imm,A_AM1_LSL,rm) +#define EOP_ORR_REG_LSR(rd,rn,rm,shift_imm) EOP_ORR_REG(0,rn,rd,shift_imm,A_AM1_LSR,rm) +#define EOP_ORR_REG_ASR(rd,rn,rm,shift_imm) EOP_ORR_REG(0,rn,rd,shift_imm,A_AM1_ASR,rm) +#define EOP_ORR_REG_ROR(rd,rn,rm,shift_imm) EOP_ORR_REG(0,rn,rd,shift_imm,A_AM1_ROR,rm) + +#define EOP_ADD_REG_SIMPLE(rd,rm) EOP_ADD_REG(0,rd,rd,0,A_AM1_LSL,rm) +#define EOP_ADD_REG_LSL(rd,rn,rm,shift_imm) EOP_ADD_REG(0,rn,rd,shift_imm,A_AM1_LSL,rm) +#define EOP_ADD_REG_LSR(rd,rn,rm,shift_imm) EOP_ADD_REG(0,rn,rd,shift_imm,A_AM1_LSR,rm) + +#define EOP_TST_REG_SIMPLE(rn,rm) EOP_TST_REG( rn, 0,A_AM1_LSL,rm) + +#define EOP_MOV_REG2_LSL(rd, rm,rs) EOP_MOV_REG2(0, rd,rs,A_AM1_LSL,rm) +#define EOP_MOV_REG2_ROR(rd, rm,rs) EOP_MOV_REG2(0, rd,rs,A_AM1_ROR,rm) +#define EOP_ADD_REG2_LSL(rd,rn,rm,rs) EOP_ADD_REG2(0,rn,rd,rs,A_AM1_LSL,rm) +#define EOP_SUB_REG2_LSL(rd,rn,rm,rs) EOP_SUB_REG2(0,rn,rd,rs,A_AM1_LSL,rm) + +/* addressing mode 2 */ +#define EOP_C_AM2_IMM(cond,u,b,l,rn,rd,offset_12) \ + EMIT(((cond)<<28) | 0x05000000 | ((u)<<23) | ((b)<<22) | ((l)<<20) | ((rn)<<16) | ((rd)<<12) | (offset_12)) -#define EOP_MOV_IMM(s, rd,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_MOV,s, 0,rd,ror2,imm8) -#define EOP_ORR_IMM(s,rn,rd,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_ORR,s,rn,rd,ror2,imm8) +/* addressing mode 3 */ +#define EOP_C_AM3(cond,u,r,l,rn,rd,s,h,immed_reg) \ + EMIT(((cond)<<28) | 0x01000090 | ((u)<<23) | ((r)<<22) | ((l)<<20) | ((rn)<<16) | ((rd)<<12) | \ + ((s)<<6) | ((h)<<5) | (immed_reg)) -#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) +#define EOP_C_AM3_IMM(cond,u,l,rn,rd,s,h,offset_8) EOP_C_AM3(cond,u,1,l,rn,rd,s,h,(((offset_8)&0xf0)<<4)|((offset_8)&0xf)) -#define EOP_MOV_REG_SIMPLE(rd,rm) EOP_MOV_REG(0,rd,0,A_AM1_LSL,rm) +#define EOP_C_AM3_REG(cond,u,l,rn,rd,s,h,rm) EOP_C_AM3(cond,u,0,l,rn,rd,s,h,rm) /* ldr and str */ -#define EOP_C_XXR_IMM(cond,u,b,l,rn,rd,offset_12) \ - EMIT(((cond)<<28) | 0x05000000 | ((u)<<23) | ((b)<<22) | ((l)<<20) | ((rn)<<16) | ((rd)<<12) | (offset_12)) - -#define EOP_LDR_IMM( rd,rn,offset_12) EOP_C_XXR_IMM(A_COND_AL,1,0,1,rn,rd,offset_12) -#define EOP_LDR_NEGIMM(rd,rn,offset_12) EOP_C_XXR_IMM(A_COND_AL,0,0,1,rn,rd,offset_12) -#define EOP_LDR_SIMPLE(rd,rn) EOP_C_XXR_IMM(A_COND_AL,1,0,1,rn,rd,0) -#define EOP_STR_SIMPLE(rd,rn) EOP_C_XXR_IMM(A_COND_AL,1,0,0,rn,rd,0) +#define EOP_LDR_IMM( rd,rn,offset_12) EOP_C_AM2_IMM(A_COND_AL,1,0,1,rn,rd,offset_12) +#define EOP_LDR_NEGIMM(rd,rn,offset_12) EOP_C_AM2_IMM(A_COND_AL,0,0,1,rn,rd,offset_12) +#define EOP_LDR_SIMPLE(rd,rn) EOP_C_AM2_IMM(A_COND_AL,1,0,1,rn,rd,0) +#define EOP_STR_IMM( rd,rn,offset_12) EOP_C_AM2_IMM(A_COND_AL,1,0,0,rn,rd,offset_12) +#define EOP_STR_SIMPLE(rd,rn) EOP_C_AM2_IMM(A_COND_AL,1,0,0,rn,rd,0) + +#define EOP_LDRH_IMM( rd,rn,offset_8) EOP_C_AM3_IMM(A_COND_AL,1,1,rn,rd,0,1,offset_8) +#define EOP_LDRH_SIMPLE(rd,rn) EOP_C_AM3_IMM(A_COND_AL,1,1,rn,rd,0,1,0) +#define EOP_LDRH_REG( rd,rn,rm) EOP_C_AM3_REG(A_COND_AL,1,1,rn,rd,0,1,rm) +#define EOP_STRH_IMM( rd,rn,offset_8) EOP_C_AM3_IMM(A_COND_AL,1,0,rn,rd,0,1,offset_8) +#define EOP_STRH_SIMPLE(rd,rn) EOP_C_AM3_IMM(A_COND_AL,1,0,rn,rd,0,1,0) +#define EOP_STRH_REG( rd,rn,rm) EOP_C_AM3_REG(A_COND_AL,1,0,rn,rd,0,1,rm) /* ldm and stm */ #define EOP_XXM(cond,p,u,s,w,l,rn,list) \ @@ -52,52 +133,80 @@ #define EOP_BX(rm) EOP_C_BX(A_COND_AL,rm) +#define EOP_C_B(cond,l,signed_immed_24) \ + EMIT(((cond)<<28) | 0x0a000000 | ((l)<<24) | (signed_immed_24)) + +#define EOP_B( signed_immed_24) EOP_C_B(A_COND_AL,0,signed_immed_24) +#define EOP_BL(signed_immed_24) EOP_C_B(A_COND_AL,1,signed_immed_24) + +/* misc */ +#define EOP_C_MUL(cond,s,rd,rs,rm) \ + EMIT(((cond)<<28) | ((s)<<20) | ((rd)<<16) | ((rs)<<8) | 0x90 | (rm)) + +#define EOP_MUL(rd,rm,rs) EOP_C_MUL(A_COND_AL,0,rd,rs,rm) // note: rd != rm + +#define EOP_C_MRS(cond,rd) \ + EMIT(((cond)<<28) | 0x010f0000 | ((rd)<<12)) + +#define EOP_C_MSR_IMM(cond,ror2,imm) \ + EMIT(((cond)<<28) | 0x0328f000 | ((ror2)<<8) | (imm)) // cpsr_f -static void emit_mov_const16(int d, unsigned int val) +#define EOP_C_MSR_REG(cond,rm) \ + EMIT(((cond)<<28) | 0x0128f000 | (rm)) // cpsr_f + +#define EOP_MRS(rd) EOP_C_MRS(A_COND_AL,rd) +#define EOP_MSR_IMM(ror2,imm) EOP_C_MSR_IMM(A_COND_AL,ror2,imm) +#define EOP_MSR_REG(rm) EOP_C_MSR_REG(A_COND_AL,rm) + + +static void emit_mov_const(int cond, int d, unsigned int val) { int need_or = 0; - if (val & 0xff00) { - EOP_MOV_IMM(0, d, 24/2, (val>>8)&0xff); + if (val & 0xff000000) { + EOP_C_DOP_IMM(cond, A_OP_MOV, 0, 0, d, 8/2, (val>>24)&0xff); + need_or = 1; + } + if (val & 0x00ff0000) { + EOP_C_DOP_IMM(cond, need_or ? A_OP_ORR : A_OP_MOV, 0, need_or ? d : 0, d, 16/2, (val>>16)&0xff); need_or = 1; } - if ((val & 0xff) || !need_or) - EOP_C_DOP_IMM(A_COND_AL,need_or ? A_OP_ORR : A_OP_MOV, 0, d, d, 0, val&0xff); + if (val & 0x0000ff00) { + EOP_C_DOP_IMM(cond, need_or ? A_OP_ORR : A_OP_MOV, 0, need_or ? d : 0, d, 24/2, (val>>8)&0xff); + need_or = 1; + } + if ((val &0x000000ff) || !need_or) + EOP_C_DOP_IMM(cond, need_or ? A_OP_ORR : A_OP_MOV, 0, need_or ? d : 0, d, 0, val&0xff); } -static void emit_block_prologue(void) +static void check_offset_24(int val) { - // stack LR - EOP_STMFD_ST(A_R14M); // stmfd r13!, {r14} + if (val >= (int)0xff000000 && val <= 0x00ffffff) return; + printf("offset_24 overflow %08x\n", val); + exit(1); } -static void emit_block_epilogue(unsigned int *block_start, int icount) +static void emit_call(int cond, void *target) { - int back = (tcache_ptr - block_start) + 2; - back += 3; // g_cycles - EOP_LDR_NEGIMM(2,15,back<<2); // ldr r2,[pc,#back] - emit_mov_const16(3, icount); - EOP_STR_SIMPLE(3,2); // str r3,[r2] - - EOP_LDMFD_ST(A_R14M); // ldmfd r13!, {r14} - EOP_BX(14); // bx r14 + int val = (unsigned int *)target - tcache_ptr - 2; + check_offset_24(val); + + EOP_C_B(cond,1,val & 0xffffff); // bl target } -static void emit_pc_inc(unsigned int *block_start, int pc) +static void emit_jump(int cond, void *target) { - int back = (tcache_ptr - block_start) + 2; - back += 2; // rPC ptr - EOP_LDR_NEGIMM(2,15,back<<2); // ldr r2,[pc,#back] - emit_mov_const16(3, pc); - EOP_STR_SIMPLE(3,2); // str r3,[r2] + int val = (unsigned int *)target - tcache_ptr - 2; + check_offset_24(val); + + EOP_C_B(cond,0,val & 0xffffff); // b target } -static void emit_call(unsigned int *block_start, unsigned int op1) +static void handle_caches(void) { - int back = (tcache_ptr - block_start) + 2; - back += 1; // func table - EOP_LDR_NEGIMM(2,15,back<<2); // ldr r2,[pc,#back] - EOP_MOV_REG_SIMPLE(14,15); // mov lr,pc - EOP_LDR_IMM(15,2,op1<<2); // ldr pc,[r2,#op1] +#ifdef ARM + extern void flush_inval_caches(const void *start_addr, const void *end_addr); + flush_inval_caches(tcache, tcache_ptr); +#endif }