import gdb-1999-08-09 snapshot

1 files changed, 213 insertions, 443 deletions

diff --git a/sim/m32r/cpu.h b/sim/m32r/cpu.h
index 6ebe199..fa475d5 100644
--- a/sim/m32r/cpu.h
+++ b/sim/m32r/cpu.h
@@ -117,317 +117,109 @@ typedef struct {
   int empty;
 } MODEL_TEST_DATA;
 
+/* Instruction argument buffer.  */
+
 union sem_fields {
-    struct { /* empty sformat for unspecified field list */
-      int empty;
-    } fmt_empty;
-    struct { /* e.g. add $dr,$sr */
-      SI * i_dr;
-      SI * i_sr;
-      unsigned char in_dr;
-      unsigned char in_sr;
-      unsigned char out_dr;
-    } fmt_add;
-    struct { /* e.g. add3 $dr,$sr,$hash$slo16 */
-      INT f_simm16;
-      SI * i_sr;
-      SI * i_dr;
-      unsigned char in_sr;
-      unsigned char out_dr;
-    } fmt_add3;
-    struct { /* e.g. and3 $dr,$sr,$uimm16 */
-      UINT f_uimm16;
-      SI * i_sr;
-      SI * i_dr;
-      unsigned char in_sr;
-      unsigned char out_dr;
-    } fmt_and3;
-    struct { /* e.g. or3 $dr,$sr,$hash$ulo16 */
-      UINT f_uimm16;
-      SI * i_sr;
-      SI * i_dr;
-      unsigned char in_sr;
-      unsigned char out_dr;
-    } fmt_or3;
-    struct { /* e.g. addi $dr,$simm8 */
-      INT f_simm8;
-      SI * i_dr;
-      unsigned char in_dr;
-      unsigned char out_dr;
-    } fmt_addi;
-    struct { /* e.g. addv $dr,$sr */
-      SI * i_dr;
-      SI * i_sr;
-      unsigned char in_dr;
-      unsigned char in_sr;
-      unsigned char out_dr;
-    } fmt_addv;
-    struct { /* e.g. addv3 $dr,$sr,$simm16 */
-      INT f_simm16;
-      SI * i_sr;
-      SI * i_dr;
-      unsigned char in_sr;
-      unsigned char out_dr;
-    } fmt_addv3;
-    struct { /* e.g. addx $dr,$sr */
-      SI * i_dr;
-      SI * i_sr;
-      unsigned char in_dr;
-      unsigned char in_sr;
-      unsigned char out_dr;
-    } fmt_addx;
-    struct { /* e.g. cmp $src1,$src2 */
-      SI * i_src1;
-      SI * i_src2;
-      unsigned char in_src1;
-      unsigned char in_src2;
-    } fmt_cmp;
-    struct { /* e.g. cmpi $src2,$simm16 */
-      INT f_simm16;
-      SI * i_src2;
-      unsigned char in_src2;
-    } fmt_cmpi;
-    struct { /* e.g. div $dr,$sr */
-      SI * i_dr;
-      SI * i_sr;
-      unsigned char in_dr;
-      unsigned char in_sr;
-      unsigned char out_dr;
-    } fmt_div;
-    struct { /* e.g. ld $dr,@$sr */
-      SI * i_sr;
-      SI * i_dr;
-      unsigned char in_sr;
-      unsigned char out_dr;
-    } fmt_ld;
-    struct { /* e.g. ld $dr,@($slo16,$sr) */
-      INT f_simm16;
-      SI * i_sr;
-      SI * i_dr;
-      unsigned char in_sr;
-      unsigned char out_dr;
-    } fmt_ld_d;
-    struct { /* e.g. ldb $dr,@$sr */
-      SI * i_sr;
-      SI * i_dr;
-      unsigned char in_sr;
-      unsigned char out_dr;
-    } fmt_ldb;
-    struct { /* e.g. ldb $dr,@($slo16,$sr) */
-      INT f_simm16;
-      SI * i_sr;
-      SI * i_dr;
-      unsigned char in_sr;
-      unsigned char out_dr;
-    } fmt_ldb_d;
-    struct { /* e.g. ldh $dr,@$sr */
-      SI * i_sr;
-      SI * i_dr;
-      unsigned char in_sr;
-      unsigned char out_dr;
-    } fmt_ldh;
-    struct { /* e.g. ldh $dr,@($slo16,$sr) */
-      INT f_simm16;
-      SI * i_sr;
-      SI * i_dr;
-      unsigned char in_sr;
-      unsigned char out_dr;
-    } fmt_ldh_d;
-    struct { /* e.g. ld $dr,@$sr+ */
-      SI * i_sr;
-      SI * i_dr;
-      unsigned char in_sr;
-      unsigned char out_dr;
-      unsigned char out_sr;
-    } fmt_ld_plus;
-    struct { /* e.g. ld24 $dr,$uimm24 */
-      ADDR i_uimm24;
-      SI * i_dr;
-      unsigned char out_dr;
-    } fmt_ld24;
-    struct { /* e.g. ldi8 $dr,$simm8 */
-      INT f_simm8;
-      SI * i_dr;
-      unsigned char out_dr;
-    } fmt_ldi8;
-    struct { /* e.g. ldi16 $dr,$hash$slo16 */
-      INT f_simm16;
-      SI * i_dr;
-      unsigned char out_dr;
-    } fmt_ldi16;
-    struct { /* e.g. lock $dr,@$sr */
-      SI * i_sr;
-      SI * i_dr;
-      unsigned char in_sr;
-      unsigned char out_dr;
-    } fmt_lock;
-    struct { /* e.g. machi $src1,$src2 */
-      SI * i_src1;
-      SI * i_src2;
-      unsigned char in_src1;
-      unsigned char in_src2;
-    } fmt_machi;
-    struct { /* e.g. mulhi $src1,$src2 */
-      SI * i_src1;
-      SI * i_src2;
-      unsigned char in_src1;
-      unsigned char in_src2;
-    } fmt_mulhi;
-    struct { /* e.g. mv $dr,$sr */
-      SI * i_sr;
-      SI * i_dr;
-      unsigned char in_sr;
-      unsigned char out_dr;
-    } fmt_mv;
-    struct { /* e.g. mvfachi $dr */
-      SI * i_dr;
-      unsigned char out_dr;
-    } fmt_mvfachi;
-    struct { /* e.g. mvfc $dr,$scr */
-      UINT f_r2;
-      SI * i_dr;
-      unsigned char out_dr;
-    } fmt_mvfc;
-    struct { /* e.g. mvtachi $src1 */
-      SI * i_src1;
-      unsigned char in_src1;
-    } fmt_mvtachi;
-    struct { /* e.g. mvtc $sr,$dcr */
-      UINT f_r1;
-      SI * i_sr;
-      unsigned char in_sr;
-    } fmt_mvtc;
-    struct { /* e.g. nop */
-      int empty;
-    } fmt_nop;
-    struct { /* e.g. rac */
-      int empty;
-    } fmt_rac;
-    struct { /* e.g. seth $dr,$hash$hi16 */
-      UINT f_hi16;
-      SI * i_dr;
-      unsigned char out_dr;
-    } fmt_seth;
-    struct { /* e.g. sll3 $dr,$sr,$simm16 */
-      INT f_simm16;
-      SI * i_sr;
-      SI * i_dr;
-      unsigned char in_sr;
-      unsigned char out_dr;
-    } fmt_sll3;
-    struct { /* e.g. slli $dr,$uimm5 */
-      UINT f_uimm5;
-      SI * i_dr;
-      unsigned char in_dr;
-      unsigned char out_dr;
-    } fmt_slli;
-    struct { /* e.g. st $src1,@$src2 */
-      SI * i_src1;
-      SI * i_src2;
-      unsigned char in_src1;
-      unsigned char in_src2;
-    } fmt_st;
-    struct { /* e.g. st $src1,@($slo16,$src2) */
-      INT f_simm16;
-      SI * i_src1;
-      SI * i_src2;
-      unsigned char in_src1;
-      unsigned char in_src2;
-    } fmt_st_d;
-    struct { /* e.g. stb $src1,@$src2 */
-      SI * i_src1;
-      SI * i_src2;
-      unsigned char in_src1;
-      unsigned char in_src2;
-    } fmt_stb;
-    struct { /* e.g. stb $src1,@($slo16,$src2) */
-      INT f_simm16;
-      SI * i_src1;
-      SI * i_src2;
-      unsigned char in_src1;
-      unsigned char in_src2;
-    } fmt_stb_d;
-    struct { /* e.g. sth $src1,@$src2 */
-      SI * i_src1;
-      SI * i_src2;
-      unsigned char in_src1;
-      unsigned char in_src2;
-    } fmt_sth;
-    struct { /* e.g. sth $src1,@($slo16,$src2) */
-      INT f_simm16;
-      SI * i_src1;
-      SI * i_src2;
-      unsigned char in_src1;
-      unsigned char in_src2;
-    } fmt_sth_d;
-    struct { /* e.g. st $src1,@+$src2 */
-      SI * i_src1;
-      SI * i_src2;
-      unsigned char in_src1;
-      unsigned char in_src2;
-      unsigned char out_src2;
-    } fmt_st_plus;
-    struct { /* e.g. unlock $src1,@$src2 */
-      SI * i_src1;
-      SI * i_src2;
-      unsigned char in_src1;
-      unsigned char in_src2;
-    } fmt_unlock;
-  /* cti insns, kept separately so addr_cache is in fixed place */
-  struct {
-    union {
-    struct { /* e.g. bc.s $disp8 */
-      IADDR i_disp8;
-    } fmt_bc8;
-    struct { /* e.g. bc.l $disp24 */
-      IADDR i_disp24;
-    } fmt_bc24;
-    struct { /* e.g. beq $src1,$src2,$disp16 */
-      IADDR i_disp16;
-      SI * i_src1;
-      SI * i_src2;
-      unsigned char in_src1;
-      unsigned char in_src2;
-    } fmt_beq;
-    struct { /* e.g. beqz $src2,$disp16 */
-      IADDR i_disp16;
-      SI * i_src2;
-      unsigned char in_src2;
-    } fmt_beqz;
-    struct { /* e.g. bl.s $disp8 */
-      IADDR i_disp8;
-      unsigned char out_h_gr_14;
-    } fmt_bl8;
-    struct { /* e.g. bl.l $disp24 */
-      IADDR i_disp24;
-      unsigned char out_h_gr_14;
-    } fmt_bl24;
-    struct { /* e.g. bra.s $disp8 */
-      IADDR i_disp8;
-    } fmt_bra8;
-    struct { /* e.g. bra.l $disp24 */
-      IADDR i_disp24;
-    } fmt_bra24;
-    struct { /* e.g. jl $sr */
-      SI * i_sr;
-      unsigned char in_sr;
-      unsigned char out_h_gr_14;
-    } fmt_jl;
-    struct { /* e.g. jmp $sr */
-      SI * i_sr;
-      unsigned char in_sr;
-    } fmt_jmp;
-    struct { /* e.g. rte */
-      int empty;
-    } fmt_rte;
-    struct { /* e.g. trap $uimm4 */
-      UINT f_uimm4;
-    } fmt_trap;
-    } fields;
-#if WITH_SCACHE_PBB
-    SEM_PC addr_cache;
-#endif
-  } cti;
+  struct { /* no operands */
+    int empty;
+  } fmt_empty;
+  struct { /*  */
+    UINT f_uimm4;
+  } sfmt_trap;
+  struct { /*  */
+    IADDR i_disp24;
+    unsigned char out_h_gr_14;
+  } sfmt_bl24;
+  struct { /*  */
+    IADDR i_disp8;
+    unsigned char out_h_gr_14;
+  } sfmt_bl8;
+  struct { /*  */
+    SI* i_dr;
+    UINT f_hi16;
+    unsigned char out_dr;
+  } sfmt_seth;
+  struct { /*  */
+    SI* i_sr;
+    UINT f_r1;
+    unsigned char in_sr;
+  } sfmt_mvtc;
+  struct { /*  */
+    SI* i_dr;
+    UINT f_r2;
+    unsigned char out_dr;
+  } sfmt_mvfc;
+  struct { /*  */
+    ADDR i_uimm24;
+    SI* i_dr;
+    unsigned char out_dr;
+  } sfmt_ld24;
+  struct { /*  */
+    SI* i_sr;
+    unsigned char in_sr;
+    unsigned char out_h_gr_14;
+  } sfmt_jl;
+  struct { /*  */
+    SI* i_dr;
+    UINT f_uimm5;
+    unsigned char in_dr;
+    unsigned char out_dr;
+  } sfmt_slli;
+  struct { /*  */
+    SI* i_dr;
+    INT f_simm8;
+    unsigned char in_dr;
+    unsigned char out_dr;
+  } sfmt_addi;
+  struct { /*  */
+    SI* i_src1;
+    SI* i_src2;
+    unsigned char in_src1;
+    unsigned char in_src2;
+    unsigned char out_src2;
+  } sfmt_st_plus;
+  struct { /*  */
+    SI* i_src1;
+    SI* i_src2;
+    INT f_simm16;
+    unsigned char in_src1;
+    unsigned char in_src2;
+  } sfmt_st_d;
+  struct { /*  */
+    SI* i_dr;
+    SI* i_sr;
+    unsigned char in_sr;
+    unsigned char out_dr;
+    unsigned char out_sr;
+  } sfmt_ld_plus;
+  struct { /*  */
+    IADDR i_disp16;
+    SI* i_src1;
+    SI* i_src2;
+    unsigned char in_src1;
+    unsigned char in_src2;
+  } sfmt_beq;
+  struct { /*  */
+    SI* i_dr;
+    SI* i_sr;
+    UINT f_uimm16;
+    unsigned char in_sr;
+    unsigned char out_dr;
+  } sfmt_and3;
+  struct { /*  */
+    SI* i_dr;
+    SI* i_sr;
+    INT f_simm16;
+    unsigned char in_sr;
+    unsigned char out_dr;
+  } sfmt_add3;
+  struct { /*  */
+    SI* i_dr;
+    SI* i_sr;
+    unsigned char in_dr;
+    unsigned char in_sr;
+    unsigned char out_dr;
+  } sfmt_add;
 #if WITH_SCACHE_PBB
   /* Writeback handler.  */
   struct {
@@ -449,6 +241,7 @@ union sem_fields {
     int insn_count;
     /* Next pbb to execute.  */
     SCACHE *next;
+    SCACHE *branch_target;
   } chain;
 #endif
 };
@@ -460,6 +253,9 @@ struct argbuf {
   const IDESC *idesc;
   char trace_p;
   char profile_p;
+  /* ??? Temporary hack for skip insns.  */
+  char skip_count;
+  char unused;
   /* cpu specific data follows */
   union sem semantic;
   int written;
@@ -480,13 +276,11 @@ struct scache {
    These define and assign the local vars that contain the insn's fields.  */
 
 #define EXTRACT_IFMT_EMPTY_VARS \
-  /* Instruction fields.  */ \
   unsigned int length;
 #define EXTRACT_IFMT_EMPTY_CODE \
   length = 0; \
 
 #define EXTRACT_IFMT_ADD_VARS \
-  /* Instruction fields.  */ \
   UINT f_op1; \
   UINT f_r1; \
   UINT f_op2; \
@@ -494,13 +288,12 @@ struct scache {
   unsigned int length;
 #define EXTRACT_IFMT_ADD_CODE \
   length = 2; \
-  f_op1 = EXTRACT_UINT (insn, 16, 0, 4); \
-  f_r1 = EXTRACT_UINT (insn, 16, 4, 4); \
-  f_op2 = EXTRACT_UINT (insn, 16, 8, 4); \
-  f_r2 = EXTRACT_UINT (insn, 16, 12, 4); \
+  f_op1 = EXTRACT_MSB0_UINT (insn, 16, 0, 4); \
+  f_r1 = EXTRACT_MSB0_UINT (insn, 16, 4, 4); \
+  f_op2 = EXTRACT_MSB0_UINT (insn, 16, 8, 4); \
+  f_r2 = EXTRACT_MSB0_UINT (insn, 16, 12, 4); \
 
 #define EXTRACT_IFMT_ADD3_VARS \
-  /* Instruction fields.  */ \
   UINT f_op1; \
   UINT f_r1; \
   UINT f_op2; \
@@ -509,14 +302,13 @@ struct scache {
   unsigned int length;
 #define EXTRACT_IFMT_ADD3_CODE \
   length = 4; \
-  f_op1 = EXTRACT_UINT (insn, 32, 0, 4); \
-  f_r1 = EXTRACT_UINT (insn, 32, 4, 4); \
-  f_op2 = EXTRACT_UINT (insn, 32, 8, 4); \
-  f_r2 = EXTRACT_UINT (insn, 32, 12, 4); \
-  f_simm16 = EXTRACT_INT (insn, 32, 16, 16); \
+  f_op1 = EXTRACT_MSB0_UINT (insn, 32, 0, 4); \
+  f_r1 = EXTRACT_MSB0_UINT (insn, 32, 4, 4); \
+  f_op2 = EXTRACT_MSB0_UINT (insn, 32, 8, 4); \
+  f_r2 = EXTRACT_MSB0_UINT (insn, 32, 12, 4); \
+  f_simm16 = EXTRACT_MSB0_INT (insn, 32, 16, 16); \
 
 #define EXTRACT_IFMT_AND3_VARS \
-  /* Instruction fields.  */ \
   UINT f_op1; \
   UINT f_r1; \
   UINT f_op2; \
@@ -525,14 +317,13 @@ struct scache {
   unsigned int length;
 #define EXTRACT_IFMT_AND3_CODE \
   length = 4; \
-  f_op1 = EXTRACT_UINT (insn, 32, 0, 4); \
-  f_r1 = EXTRACT_UINT (insn, 32, 4, 4); \
-  f_op2 = EXTRACT_UINT (insn, 32, 8, 4); \
-  f_r2 = EXTRACT_UINT (insn, 32, 12, 4); \
-  f_uimm16 = EXTRACT_UINT (insn, 32, 16, 16); \
+  f_op1 = EXTRACT_MSB0_UINT (insn, 32, 0, 4); \
+  f_r1 = EXTRACT_MSB0_UINT (insn, 32, 4, 4); \
+  f_op2 = EXTRACT_MSB0_UINT (insn, 32, 8, 4); \
+  f_r2 = EXTRACT_MSB0_UINT (insn, 32, 12, 4); \
+  f_uimm16 = EXTRACT_MSB0_UINT (insn, 32, 16, 16); \
 
 #define EXTRACT_IFMT_OR3_VARS \
-  /* Instruction fields.  */ \
   UINT f_op1; \
   UINT f_r1; \
   UINT f_op2; \
@@ -541,26 +332,24 @@ struct scache {
   unsigned int length;
 #define EXTRACT_IFMT_OR3_CODE \
   length = 4; \
-  f_op1 = EXTRACT_UINT (insn, 32, 0, 4); \
-  f_r1 = EXTRACT_UINT (insn, 32, 4, 4); \
-  f_op2 = EXTRACT_UINT (insn, 32, 8, 4); \
-  f_r2 = EXTRACT_UINT (insn, 32, 12, 4); \
-  f_uimm16 = EXTRACT_UINT (insn, 32, 16, 16); \
+  f_op1 = EXTRACT_MSB0_UINT (insn, 32, 0, 4); \
+  f_r1 = EXTRACT_MSB0_UINT (insn, 32, 4, 4); \
+  f_op2 = EXTRACT_MSB0_UINT (insn, 32, 8, 4); \
+  f_r2 = EXTRACT_MSB0_UINT (insn, 32, 12, 4); \
+  f_uimm16 = EXTRACT_MSB0_UINT (insn, 32, 16, 16); \
 
 #define EXTRACT_IFMT_ADDI_VARS \
-  /* Instruction fields.  */ \
   UINT f_op1; \
   UINT f_r1; \
   INT f_simm8; \
   unsigned int length;
 #define EXTRACT_IFMT_ADDI_CODE \
   length = 2; \
-  f_op1 = EXTRACT_UINT (insn, 16, 0, 4); \
-  f_r1 = EXTRACT_UINT (insn, 16, 4, 4); \
-  f_simm8 = EXTRACT_INT (insn, 16, 8, 8); \
+  f_op1 = EXTRACT_MSB0_UINT (insn, 16, 0, 4); \
+  f_r1 = EXTRACT_MSB0_UINT (insn, 16, 4, 4); \
+  f_simm8 = EXTRACT_MSB0_INT (insn, 16, 8, 8); \
 
 #define EXTRACT_IFMT_ADDV3_VARS \
-  /* Instruction fields.  */ \
   UINT f_op1; \
   UINT f_r1; \
   UINT f_op2; \
@@ -569,38 +358,35 @@ struct scache {
   unsigned int length;
 #define EXTRACT_IFMT_ADDV3_CODE \
   length = 4; \
-  f_op1 = EXTRACT_UINT (insn, 32, 0, 4); \
-  f_r1 = EXTRACT_UINT (insn, 32, 4, 4); \
-  f_op2 = EXTRACT_UINT (insn, 32, 8, 4); \
-  f_r2 = EXTRACT_UINT (insn, 32, 12, 4); \
-  f_simm16 = EXTRACT_INT (insn, 32, 16, 16); \
+  f_op1 = EXTRACT_MSB0_UINT (insn, 32, 0, 4); \
+  f_r1 = EXTRACT_MSB0_UINT (insn, 32, 4, 4); \
+  f_op2 = EXTRACT_MSB0_UINT (insn, 32, 8, 4); \
+  f_r2 = EXTRACT_MSB0_UINT (insn, 32, 12, 4); \
+  f_simm16 = EXTRACT_MSB0_INT (insn, 32, 16, 16); \
 
 #define EXTRACT_IFMT_BC8_VARS \
-  /* Instruction fields.  */ \
   UINT f_op1; \
   UINT f_r1; \
   SI f_disp8; \
   unsigned int length;
 #define EXTRACT_IFMT_BC8_CODE \
   length = 2; \
-  f_op1 = EXTRACT_UINT (insn, 16, 0, 4); \
-  f_r1 = EXTRACT_UINT (insn, 16, 4, 4); \
-  f_disp8 = ((((EXTRACT_INT (insn, 16, 8, 8)) << (2))) + (((pc) & (-4)))); \
+  f_op1 = EXTRACT_MSB0_UINT (insn, 16, 0, 4); \
+  f_r1 = EXTRACT_MSB0_UINT (insn, 16, 4, 4); \
+  f_disp8 = ((((EXTRACT_MSB0_INT (insn, 16, 8, 8)) << (2))) + (((pc) & (-4)))); \
 
 #define EXTRACT_IFMT_BC24_VARS \
-  /* Instruction fields.  */ \
   UINT f_op1; \
   UINT f_r1; \
   SI f_disp24; \
   unsigned int length;
 #define EXTRACT_IFMT_BC24_CODE \
   length = 4; \
-  f_op1 = EXTRACT_UINT (insn, 32, 0, 4); \
-  f_r1 = EXTRACT_UINT (insn, 32, 4, 4); \
-  f_disp24 = ((((EXTRACT_INT (insn, 32, 8, 24)) << (2))) + (pc)); \
+  f_op1 = EXTRACT_MSB0_UINT (insn, 32, 0, 4); \
+  f_r1 = EXTRACT_MSB0_UINT (insn, 32, 4, 4); \
+  f_disp24 = ((((EXTRACT_MSB0_INT (insn, 32, 8, 24)) << (2))) + (pc)); \
 
 #define EXTRACT_IFMT_BEQ_VARS \
-  /* Instruction fields.  */ \
   UINT f_op1; \
   UINT f_r1; \
   UINT f_op2; \
@@ -609,14 +395,13 @@ struct scache {
   unsigned int length;
 #define EXTRACT_IFMT_BEQ_CODE \
   length = 4; \
-  f_op1 = EXTRACT_UINT (insn, 32, 0, 4); \
-  f_r1 = EXTRACT_UINT (insn, 32, 4, 4); \
-  f_op2 = EXTRACT_UINT (insn, 32, 8, 4); \
-  f_r2 = EXTRACT_UINT (insn, 32, 12, 4); \
-  f_disp16 = ((((EXTRACT_INT (insn, 32, 16, 16)) << (2))) + (pc)); \
+  f_op1 = EXTRACT_MSB0_UINT (insn, 32, 0, 4); \
+  f_r1 = EXTRACT_MSB0_UINT (insn, 32, 4, 4); \
+  f_op2 = EXTRACT_MSB0_UINT (insn, 32, 8, 4); \
+  f_r2 = EXTRACT_MSB0_UINT (insn, 32, 12, 4); \
+  f_disp16 = ((((EXTRACT_MSB0_INT (insn, 32, 16, 16)) << (2))) + (pc)); \
 
 #define EXTRACT_IFMT_BEQZ_VARS \
-  /* Instruction fields.  */ \
   UINT f_op1; \
   UINT f_r1; \
   UINT f_op2; \
@@ -625,14 +410,13 @@ struct scache {
   unsigned int length;
 #define EXTRACT_IFMT_BEQZ_CODE \
   length = 4; \
-  f_op1 = EXTRACT_UINT (insn, 32, 0, 4); \
-  f_r1 = EXTRACT_UINT (insn, 32, 4, 4); \
-  f_op2 = EXTRACT_UINT (insn, 32, 8, 4); \
-  f_r2 = EXTRACT_UINT (insn, 32, 12, 4); \
-  f_disp16 = ((((EXTRACT_INT (insn, 32, 16, 16)) << (2))) + (pc)); \
+  f_op1 = EXTRACT_MSB0_UINT (insn, 32, 0, 4); \
+  f_r1 = EXTRACT_MSB0_UINT (insn, 32, 4, 4); \
+  f_op2 = EXTRACT_MSB0_UINT (insn, 32, 8, 4); \
+  f_r2 = EXTRACT_MSB0_UINT (insn, 32, 12, 4); \
+  f_disp16 = ((((EXTRACT_MSB0_INT (insn, 32, 16, 16)) << (2))) + (pc)); \
 
 #define EXTRACT_IFMT_CMP_VARS \
-  /* Instruction fields.  */ \
   UINT f_op1; \
   UINT f_r1; \
   UINT f_op2; \
@@ -640,13 +424,12 @@ struct scache {
   unsigned int length;
 #define EXTRACT_IFMT_CMP_CODE \
   length = 2; \
-  f_op1 = EXTRACT_UINT (insn, 16, 0, 4); \
-  f_r1 = EXTRACT_UINT (insn, 16, 4, 4); \
-  f_op2 = EXTRACT_UINT (insn, 16, 8, 4); \
-  f_r2 = EXTRACT_UINT (insn, 16, 12, 4); \
+  f_op1 = EXTRACT_MSB0_UINT (insn, 16, 0, 4); \
+  f_r1 = EXTRACT_MSB0_UINT (insn, 16, 4, 4); \
+  f_op2 = EXTRACT_MSB0_UINT (insn, 16, 8, 4); \
+  f_r2 = EXTRACT_MSB0_UINT (insn, 16, 12, 4); \
 
 #define EXTRACT_IFMT_CMPI_VARS \
-  /* Instruction fields.  */ \
   UINT f_op1; \
   UINT f_r1; \
   UINT f_op2; \
@@ -655,14 +438,13 @@ struct scache {
   unsigned int length;
 #define EXTRACT_IFMT_CMPI_CODE \
   length = 4; \
-  f_op1 = EXTRACT_UINT (insn, 32, 0, 4); \
-  f_r1 = EXTRACT_UINT (insn, 32, 4, 4); \
-  f_op2 = EXTRACT_UINT (insn, 32, 8, 4); \
-  f_r2 = EXTRACT_UINT (insn, 32, 12, 4); \
-  f_simm16 = EXTRACT_INT (insn, 32, 16, 16); \
+  f_op1 = EXTRACT_MSB0_UINT (insn, 32, 0, 4); \
+  f_r1 = EXTRACT_MSB0_UINT (insn, 32, 4, 4); \
+  f_op2 = EXTRACT_MSB0_UINT (insn, 32, 8, 4); \
+  f_r2 = EXTRACT_MSB0_UINT (insn, 32, 12, 4); \
+  f_simm16 = EXTRACT_MSB0_INT (insn, 32, 16, 16); \
 
 #define EXTRACT_IFMT_DIV_VARS \
-  /* Instruction fields.  */ \
   UINT f_op1; \
   UINT f_r1; \
   UINT f_op2; \
@@ -671,14 +453,13 @@ struct scache {
   unsigned int length;
 #define EXTRACT_IFMT_DIV_CODE \
   length = 4; \
-  f_op1 = EXTRACT_UINT (insn, 32, 0, 4); \
-  f_r1 = EXTRACT_UINT (insn, 32, 4, 4); \
-  f_op2 = EXTRACT_UINT (insn, 32, 8, 4); \
-  f_r2 = EXTRACT_UINT (insn, 32, 12, 4); \
-  f_simm16 = EXTRACT_INT (insn, 32, 16, 16); \
+  f_op1 = EXTRACT_MSB0_UINT (insn, 32, 0, 4); \
+  f_r1 = EXTRACT_MSB0_UINT (insn, 32, 4, 4); \
+  f_op2 = EXTRACT_MSB0_UINT (insn, 32, 8, 4); \
+  f_r2 = EXTRACT_MSB0_UINT (insn, 32, 12, 4); \
+  f_simm16 = EXTRACT_MSB0_INT (insn, 32, 16, 16); \
 
 #define EXTRACT_IFMT_JL_VARS \
-  /* Instruction fields.  */ \
   UINT f_op1; \
   UINT f_r1; \
   UINT f_op2; \
@@ -686,25 +467,23 @@ struct scache {
   unsigned int length;
 #define EXTRACT_IFMT_JL_CODE \
   length = 2; \
-  f_op1 = EXTRACT_UINT (insn, 16, 0, 4); \
-  f_r1 = EXTRACT_UINT (insn, 16, 4, 4); \
-  f_op2 = EXTRACT_UINT (insn, 16, 8, 4); \
-  f_r2 = EXTRACT_UINT (insn, 16, 12, 4); \
+  f_op1 = EXTRACT_MSB0_UINT (insn, 16, 0, 4); \
+  f_r1 = EXTRACT_MSB0_UINT (insn, 16, 4, 4); \
+  f_op2 = EXTRACT_MSB0_UINT (insn, 16, 8, 4); \
+  f_r2 = EXTRACT_MSB0_UINT (insn, 16, 12, 4); \
 
 #define EXTRACT_IFMT_LD24_VARS \
-  /* Instruction fields.  */ \
   UINT f_op1; \
   UINT f_r1; \
   UINT f_uimm24; \
   unsigned int length;
 #define EXTRACT_IFMT_LD24_CODE \
   length = 4; \
-  f_op1 = EXTRACT_UINT (insn, 32, 0, 4); \
-  f_r1 = EXTRACT_UINT (insn, 32, 4, 4); \
-  f_uimm24 = EXTRACT_UINT (insn, 32, 8, 24); \
+  f_op1 = EXTRACT_MSB0_UINT (insn, 32, 0, 4); \
+  f_r1 = EXTRACT_MSB0_UINT (insn, 32, 4, 4); \
+  f_uimm24 = EXTRACT_MSB0_UINT (insn, 32, 8, 24); \
 
 #define EXTRACT_IFMT_LDI16_VARS \
-  /* Instruction fields.  */ \
   UINT f_op1; \
   UINT f_r1; \
   UINT f_op2; \
@@ -713,14 +492,13 @@ struct scache {
   unsigned int length;
 #define EXTRACT_IFMT_LDI16_CODE \
   length = 4; \
-  f_op1 = EXTRACT_UINT (insn, 32, 0, 4); \
-  f_r1 = EXTRACT_UINT (insn, 32, 4, 4); \
-  f_op2 = EXTRACT_UINT (insn, 32, 8, 4); \
-  f_r2 = EXTRACT_UINT (insn, 32, 12, 4); \
-  f_simm16 = EXTRACT_INT (insn, 32, 16, 16); \
+  f_op1 = EXTRACT_MSB0_UINT (insn, 32, 0, 4); \
+  f_r1 = EXTRACT_MSB0_UINT (insn, 32, 4, 4); \
+  f_op2 = EXTRACT_MSB0_UINT (insn, 32, 8, 4); \
+  f_r2 = EXTRACT_MSB0_UINT (insn, 32, 12, 4); \
+  f_simm16 = EXTRACT_MSB0_INT (insn, 32, 16, 16); \
 
 #define EXTRACT_IFMT_MVFACHI_VARS \
-  /* Instruction fields.  */ \
   UINT f_op1; \
   UINT f_r1; \
   UINT f_op2; \
@@ -728,13 +506,12 @@ struct scache {
   unsigned int length;
 #define EXTRACT_IFMT_MVFACHI_CODE \
   length = 2; \
-  f_op1 = EXTRACT_UINT (insn, 16, 0, 4); \
-  f_r1 = EXTRACT_UINT (insn, 16, 4, 4); \
-  f_op2 = EXTRACT_UINT (insn, 16, 8, 4); \
-  f_r2 = EXTRACT_UINT (insn, 16, 12, 4); \
+  f_op1 = EXTRACT_MSB0_UINT (insn, 16, 0, 4); \
+  f_r1 = EXTRACT_MSB0_UINT (insn, 16, 4, 4); \
+  f_op2 = EXTRACT_MSB0_UINT (insn, 16, 8, 4); \
+  f_r2 = EXTRACT_MSB0_UINT (insn, 16, 12, 4); \
 
 #define EXTRACT_IFMT_MVFC_VARS \
-  /* Instruction fields.  */ \
   UINT f_op1; \
   UINT f_r1; \
   UINT f_op2; \
@@ -742,13 +519,12 @@ struct scache {
   unsigned int length;
 #define EXTRACT_IFMT_MVFC_CODE \
   length = 2; \
-  f_op1 = EXTRACT_UINT (insn, 16, 0, 4); \
-  f_r1 = EXTRACT_UINT (insn, 16, 4, 4); \
-  f_op2 = EXTRACT_UINT (insn, 16, 8, 4); \
-  f_r2 = EXTRACT_UINT (insn, 16, 12, 4); \
+  f_op1 = EXTRACT_MSB0_UINT (insn, 16, 0, 4); \
+  f_r1 = EXTRACT_MSB0_UINT (insn, 16, 4, 4); \
+  f_op2 = EXTRACT_MSB0_UINT (insn, 16, 8, 4); \
+  f_r2 = EXTRACT_MSB0_UINT (insn, 16, 12, 4); \
 
 #define EXTRACT_IFMT_MVTACHI_VARS \
-  /* Instruction fields.  */ \
   UINT f_op1; \
   UINT f_r1; \
   UINT f_op2; \
@@ -756,13 +532,12 @@ struct scache {
   unsigned int length;
 #define EXTRACT_IFMT_MVTACHI_CODE \
   length = 2; \
-  f_op1 = EXTRACT_UINT (insn, 16, 0, 4); \
-  f_r1 = EXTRACT_UINT (insn, 16, 4, 4); \
-  f_op2 = EXTRACT_UINT (insn, 16, 8, 4); \
-  f_r2 = EXTRACT_UINT (insn, 16, 12, 4); \
+  f_op1 = EXTRACT_MSB0_UINT (insn, 16, 0, 4); \
+  f_r1 = EXTRACT_MSB0_UINT (insn, 16, 4, 4); \
+  f_op2 = EXTRACT_MSB0_UINT (insn, 16, 8, 4); \
+  f_r2 = EXTRACT_MSB0_UINT (insn, 16, 12, 4); \
 
 #define EXTRACT_IFMT_MVTC_VARS \
-  /* Instruction fields.  */ \
   UINT f_op1; \
   UINT f_r1; \
   UINT f_op2; \
@@ -770,13 +545,12 @@ struct scache {
   unsigned int length;
 #define EXTRACT_IFMT_MVTC_CODE \
   length = 2; \
-  f_op1 = EXTRACT_UINT (insn, 16, 0, 4); \
-  f_r1 = EXTRACT_UINT (insn, 16, 4, 4); \
-  f_op2 = EXTRACT_UINT (insn, 16, 8, 4); \
-  f_r2 = EXTRACT_UINT (insn, 16, 12, 4); \
+  f_op1 = EXTRACT_MSB0_UINT (insn, 16, 0, 4); \
+  f_r1 = EXTRACT_MSB0_UINT (insn, 16, 4, 4); \
+  f_op2 = EXTRACT_MSB0_UINT (insn, 16, 8, 4); \
+  f_r2 = EXTRACT_MSB0_UINT (insn, 16, 12, 4); \
 
 #define EXTRACT_IFMT_NOP_VARS \
-  /* Instruction fields.  */ \
   UINT f_op1; \
   UINT f_r1; \
   UINT f_op2; \
@@ -784,13 +558,12 @@ struct scache {
   unsigned int length;
 #define EXTRACT_IFMT_NOP_CODE \
   length = 2; \
-  f_op1 = EXTRACT_UINT (insn, 16, 0, 4); \
-  f_r1 = EXTRACT_UINT (insn, 16, 4, 4); \
-  f_op2 = EXTRACT_UINT (insn, 16, 8, 4); \
-  f_r2 = EXTRACT_UINT (insn, 16, 12, 4); \
+  f_op1 = EXTRACT_MSB0_UINT (insn, 16, 0, 4); \
+  f_r1 = EXTRACT_MSB0_UINT (insn, 16, 4, 4); \
+  f_op2 = EXTRACT_MSB0_UINT (insn, 16, 8, 4); \
+  f_r2 = EXTRACT_MSB0_UINT (insn, 16, 12, 4); \
 
 #define EXTRACT_IFMT_SETH_VARS \
-  /* Instruction fields.  */ \
   UINT f_op1; \
   UINT f_r1; \
   UINT f_op2; \
@@ -799,14 +572,13 @@ struct scache {
   unsigned int length;
 #define EXTRACT_IFMT_SETH_CODE \
   length = 4; \
-  f_op1 = EXTRACT_UINT (insn, 32, 0, 4); \
-  f_r1 = EXTRACT_UINT (insn, 32, 4, 4); \
-  f_op2 = EXTRACT_UINT (insn, 32, 8, 4); \
-  f_r2 = EXTRACT_UINT (insn, 32, 12, 4); \
-  f_hi16 = EXTRACT_UINT (insn, 32, 16, 16); \
+  f_op1 = EXTRACT_MSB0_UINT (insn, 32, 0, 4); \
+  f_r1 = EXTRACT_MSB0_UINT (insn, 32, 4, 4); \
+  f_op2 = EXTRACT_MSB0_UINT (insn, 32, 8, 4); \
+  f_r2 = EXTRACT_MSB0_UINT (insn, 32, 12, 4); \
+  f_hi16 = EXTRACT_MSB0_UINT (insn, 32, 16, 16); \
 
 #define EXTRACT_IFMT_SLLI_VARS \
-  /* Instruction fields.  */ \
   UINT f_op1; \
   UINT f_r1; \
   UINT f_shift_op2; \
@@ -814,13 +586,12 @@ struct scache {
   unsigned int length;
 #define EXTRACT_IFMT_SLLI_CODE \
   length = 2; \
-  f_op1 = EXTRACT_UINT (insn, 16, 0, 4); \
-  f_r1 = EXTRACT_UINT (insn, 16, 4, 4); \
-  f_shift_op2 = EXTRACT_UINT (insn, 16, 8, 3); \
-  f_uimm5 = EXTRACT_UINT (insn, 16, 11, 5); \
+  f_op1 = EXTRACT_MSB0_UINT (insn, 16, 0, 4); \
+  f_r1 = EXTRACT_MSB0_UINT (insn, 16, 4, 4); \
+  f_shift_op2 = EXTRACT_MSB0_UINT (insn, 16, 8, 3); \
+  f_uimm5 = EXTRACT_MSB0_UINT (insn, 16, 11, 5); \
 
 #define EXTRACT_IFMT_ST_D_VARS \
-  /* Instruction fields.  */ \
   UINT f_op1; \
   UINT f_r1; \
   UINT f_op2; \
@@ -829,14 +600,13 @@ struct scache {
   unsigned int length;
 #define EXTRACT_IFMT_ST_D_CODE \
   length = 4; \
-  f_op1 = EXTRACT_UINT (insn, 32, 0, 4); \
-  f_r1 = EXTRACT_UINT (insn, 32, 4, 4); \
-  f_op2 = EXTRACT_UINT (insn, 32, 8, 4); \
-  f_r2 = EXTRACT_UINT (insn, 32, 12, 4); \
-  f_simm16 = EXTRACT_INT (insn, 32, 16, 16); \
+  f_op1 = EXTRACT_MSB0_UINT (insn, 32, 0, 4); \
+  f_r1 = EXTRACT_MSB0_UINT (insn, 32, 4, 4); \
+  f_op2 = EXTRACT_MSB0_UINT (insn, 32, 8, 4); \
+  f_r2 = EXTRACT_MSB0_UINT (insn, 32, 12, 4); \
+  f_simm16 = EXTRACT_MSB0_INT (insn, 32, 16, 16); \
 
 #define EXTRACT_IFMT_TRAP_VARS \
-  /* Instruction fields.  */ \
   UINT f_op1; \
   UINT f_r1; \
   UINT f_op2; \
@@ -844,10 +614,10 @@ struct scache {
   unsigned int length;
 #define EXTRACT_IFMT_TRAP_CODE \
   length = 2; \
-  f_op1 = EXTRACT_UINT (insn, 16, 0, 4); \
-  f_r1 = EXTRACT_UINT (insn, 16, 4, 4); \
-  f_op2 = EXTRACT_UINT (insn, 16, 8, 4); \
-  f_uimm4 = EXTRACT_UINT (insn, 16, 12, 4); \
+  f_op1 = EXTRACT_MSB0_UINT (insn, 16, 0, 4); \
+  f_r1 = EXTRACT_MSB0_UINT (insn, 16, 4, 4); \
+  f_op2 = EXTRACT_MSB0_UINT (insn, 16, 8, 4); \
+  f_uimm4 = EXTRACT_MSB0_UINT (insn, 16, 12, 4); \
 
 /* Collection of various things for the trace handler to use.  */