lib1funcs.asm (init_trampoline): New entry point.

* config/sh/lib1funcs.asm (init_trampoline): New entry point. * sh-protos.h (sh_initialize_trampoline): Declare. * sh.c (sh_initialize_trampoline): New function. * sh.h (TRAMPOLINE_SIZE): Only 24 for TARGET_SHMEDIA32. (TRAMPOLINE_ALIGNMENT): Need cache-line alignment for TARGET_SHMEDIA. (INITIALIZE_TRAMPOLINE): Call sh_initialize_trampoline. (TRAMPOLINE_ADJUST_ADDRESS): Not needed for SHcompact. * sh.md (initialize_trampoline, double_shori): New patterns. (initialize_trampoline_compact): Likewise. (shmedia32_initialize_trampoline_big): Remove. (shmedia32_initialize_trampoline_little): Likewise. From-SVN: r55529
2025-04-14 20:51:17 +08:00 · 2002-07-17 15:43:18 +00:00 · 2002-07-17 15:43:18 +00:00 · ca903bba77
commit ca903bba77
parent 0ac785173d
6 changed files with 263 additions and 102 deletions
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@ -1,4 +1,16 @@
-Wed Jul 17 14:04:10 2002  J"orn Rennecke <joern.rennecke@superh.com>
+Wed Jul 17 16:28:53 2002  J"orn Rennecke <joern.rennecke@superh.com>
+
+	* config/sh/lib1funcs.asm (init_trampoline): New entry point.
+	* sh-protos.h (sh_initialize_trampoline): Declare.
+	* sh.c (sh_initialize_trampoline): New function.
+	* sh.h (TRAMPOLINE_SIZE): Only 24 for TARGET_SHMEDIA32.
+	(TRAMPOLINE_ALIGNMENT): Need cache-line alignment for TARGET_SHMEDIA.
+	(INITIALIZE_TRAMPOLINE): Call sh_initialize_trampoline.
+	(TRAMPOLINE_ADJUST_ADDRESS): Not needed for SHcompact.
+	* sh.md (initialize_trampoline, double_shori): New patterns.
+	(initialize_trampoline_compact): Likewise.
+	(shmedia32_initialize_trampoline_big): Remove.
+	(shmedia32_initialize_trampoline_little): Likewise.

 	* sh-protos.h (binary_float_operator): Remove declaration.
 	(sh_expand_unop_v2sf, sh_expand_binop_v2sf): Declare.
--- a/gcc/config/sh/lib1funcs.asm
+++ b/gcc/config/sh/lib1funcs.asm
@ -1821,6 +1821,22 @@ LOCAL(set_fpscr_L1):
 	.mode	SHmedia
 	.section	.text..SHmedia32,"ax"
 	.align	2
+	.global	GLOBAL(init_trampoline)
+GLOBAL(init_trampoline):
+	st.l	r0,8,r2
+#ifdef __LITTLE_ENDIAN__
+	movi	9,r20
+	shori	0x402b,r20
+	shori	0xd101,r20
+	shori	0xd002,r20
+#else
+	movi	0xffffffffffffd002,r20
+	shori	0xd101,r20
+	shori	0x402b,r20
+	shori	9,r20
+#endif
+	st.q	r0,0,r20
+	st.l	r0,12,r3
 	.global	GLOBAL(ic_invalidate)
 GLOBAL(ic_invalidate):
 	ocbwb	r0,0
--- a/gcc/config/sh/sh-protos.h
+++ b/gcc/config/sh/sh-protos.h
@ -125,6 +125,7 @@ extern int fldi_ok PARAMS ((void));
 extern int sh_pr_n_sets PARAMS ((void));
 extern int sh_hard_regno_rename_ok PARAMS ((unsigned int, unsigned int));
 extern int sh_cfun_interrupt_handler_p (void);
+extern void sh_initialize_trampoline (rtx, rtx, rtx);

 #ifdef HARD_CONST
 extern void fpscr_set_from_mem PARAMS ((int, HARD_REG_SET));
--- a/gcc/config/sh/sh.c
+++ b/gcc/config/sh/sh.c
@ -7113,6 +7113,177 @@ sh_strip_name_encoding (str)
  return str;
 }

+
+/* 
+   On the SH1..SH4, the trampoline looks like
+   2 0002 D202     	   	mov.l	l2,r2
+   1 0000 D301     		mov.l	l1,r3
+   3 0004 422B     		jmp	@r2
+   4 0006 0009     		nop
+   5 0008 00000000 	l1:  	.long   area
+   6 000c 00000000 	l2:	.long   function
+
+   SH5 (compact) uses r1 instead of r3 for the static chain.  */
+
+
+/* Emit RTL insns to initialize the variable parts of a trampoline.
+   FNADDR is an RTX for the address of the function's pure code.
+   CXT is an RTX for the static chain value for the function.  */
+
+void
+sh_initialize_trampoline (tramp, fnaddr, cxt)
+     rtx tramp, fnaddr, cxt;
+{
+  if (TARGET_SHMEDIA64)
+    {
+      rtx tramp_templ;
+      int fixed_len;
+
+      rtx movi1 = GEN_INT (0xcc000010);
+      rtx shori1 = GEN_INT (0xc8000010);
+      rtx src, dst;
+
+      /* The following trampoline works within a +- 128 KB range for cxt:
+	 ptb/u cxt,tr1; movi fnaddr >> 48,r0; shori fnaddr >> 32,r0;
+         shori fnaddr >> 16,r0; shori fnaddr,r0; ptabs/l r0,tr0
+         gettr tr1,r1; blink tr0,r63  */
+      /* Address rounding makes it hard to compute the exact bounds of the
+	 offset for this trampoline, but we have a rather generous offset
+	 range, so frame_offset should do fine as an upper bound.  */
+      if (cxt == virtual_stack_vars_rtx && frame_offset < 0x20000)
+	{
+	  /* ??? could optimize this trampoline initialization
+	     by writing DImode words with two insns each.  */
+	  rtx mask = force_reg (DImode, GEN_INT (0x3fffc00));
+	  rtx insn = gen_rtx_MINUS (DImode, cxt, tramp);
+	  insn = gen_rtx_ASHIFT (DImode, insn, GEN_INT (10-2));
+	  insn = gen_rtx_AND (DImode, insn, mask);
+	  /* Or in ptb/u .,tr1 pattern */
+	  insn = gen_rtx_IOR (DImode, insn, gen_int_mode (0xec000010, SImode));
+	  insn = force_operand (insn, NULL_RTX);
+	  insn = gen_lowpart (SImode, insn);
+	  emit_move_insn (gen_rtx_MEM (SImode, tramp), insn);
+	  insn = gen_rtx_LSHIFTRT (DImode, fnaddr, GEN_INT (38));
+	  insn = gen_rtx_AND (DImode, insn, mask);
+	  insn = force_operand (gen_rtx_IOR (DImode, movi1, insn), NULL_RTX);
+	  insn = gen_lowpart (SImode, insn);
+	  emit_move_insn (gen_rtx_MEM (SImode, plus_constant (tramp, 4)), insn);
+	  insn = gen_rtx_LSHIFTRT (DImode, fnaddr, GEN_INT (22));
+	  insn = gen_rtx_AND (DImode, insn, mask);
+	  insn = force_operand (gen_rtx_IOR (DImode, shori1, insn), NULL_RTX);
+	  insn = gen_lowpart (SImode, insn);
+	  emit_move_insn (gen_rtx_MEM (SImode, plus_constant (tramp, 8)), insn);
+	  insn = gen_rtx_LSHIFTRT (DImode, fnaddr, GEN_INT (6));
+	  insn = gen_rtx_AND (DImode, insn, mask);
+	  insn = force_operand (gen_rtx_IOR (DImode, shori1, insn), NULL_RTX);
+	  insn = gen_lowpart (SImode, insn);
+	  emit_move_insn (gen_rtx_MEM (SImode, plus_constant (tramp, 12)),
+			  insn);
+	  insn = gen_rtx_ASHIFT (DImode, fnaddr, GEN_INT (10));
+	  insn = gen_rtx_AND (DImode, insn, mask);
+	  insn = force_operand (gen_rtx_IOR (DImode, shori1, insn), NULL_RTX);
+	  insn = gen_lowpart (SImode, insn);
+	  emit_move_insn (gen_rtx_MEM (SImode, plus_constant (tramp, 16)),
+			  insn);
+	  emit_move_insn (gen_rtx_MEM (SImode, plus_constant (tramp, 20)),
+			  GEN_INT (0x6bf10600));
+	  emit_move_insn (gen_rtx_MEM (SImode, plus_constant (tramp, 24)),
+			  GEN_INT (0x4415fc10));
+	  emit_move_insn (gen_rtx_MEM (SImode, plus_constant (tramp, 28)),
+			  GEN_INT (0x4401fff0));
+	  emit_insn (gen_ic_invalidate_line (tramp));
+	  return;
+	}
+      tramp_templ = gen_rtx_SYMBOL_REF (Pmode,"__GCC_nested_trampoline");
+      fixed_len = TRAMPOLINE_SIZE - 2 * GET_MODE_SIZE (Pmode);
+
+      tramp_templ = gen_datalabel_ref (tramp_templ);
+      dst = gen_rtx_MEM (BLKmode, tramp);
+      src = gen_rtx_MEM (BLKmode, tramp_templ);
+      set_mem_align (dst, 256);
+      set_mem_align (src, 64);
+      emit_block_move (dst, src, GEN_INT (fixed_len));
+
+      emit_move_insn (gen_rtx_MEM (Pmode, plus_constant (tramp,	fixed_len)),
+		      fnaddr);
+      emit_move_insn (gen_rtx_MEM (Pmode,
+				   plus_constant (tramp,
+						  fixed_len
+						  + GET_MODE_SIZE (Pmode))), 
+		      cxt);
+      emit_insn (gen_ic_invalidate_line (tramp));
+      return;
+    }
+  else if (TARGET_SHMEDIA)
+    {
+      /* movi fnaddr >> 16,r1; shori fnaddr,r1; ptabs/l r1,tr0
+         movi cxt >> 16,r1; shori cxt,r1; blink tr0,r63  */
+      rtx quad0 = gen_reg_rtx (DImode), cxtload = gen_reg_rtx (DImode);
+      rtx quad1 = gen_reg_rtx (DImode), quad2 = gen_reg_rtx (DImode);
+      /* movi 0,r1: 0xcc000010 shori 0,r1: c8000010  concatenated,
+	 rotated 10 right, and higer 16 bit of every 32 selected.  */
+      rtx movishori
+	= force_reg (V2HImode, (simplify_gen_subreg
+				(V2HImode, GEN_INT (0x4330432), SImode, 0)));
+      rtx ptabs = force_reg (DImode, GEN_INT (0x6bf10600));
+      rtx blink = force_reg (DImode, GEN_INT (0x4401fff0));
+
+      tramp = force_reg (Pmode, tramp);
+      fnaddr = force_reg (SImode, fnaddr);
+      cxt = force_reg (SImode, cxt);
+      emit_insn (gen_mshflo_w_x (gen_rtx_SUBREG (V4HImode, quad0, 0),
+				 gen_rtx_SUBREG (V2HImode, fnaddr, 0),
+				 movishori));
+      emit_insn (gen_rotldi3_mextr (quad0, quad0,
+				    GEN_INT (TARGET_LITTLE_ENDIAN ? 24 : 56)));
+      emit_insn (gen_ashldi3_media (quad0, quad0, GEN_INT (2)));
+      emit_move_insn (gen_rtx_MEM (DImode, tramp), quad0);
+      emit_insn (gen_mshflo_w_x (gen_rtx_SUBREG (V4HImode, cxtload, 0),
+				 gen_rtx_SUBREG (V2HImode, cxt, 0),
+				 movishori));
+      emit_insn (gen_rotldi3_mextr (cxtload, cxtload,
+				    GEN_INT (TARGET_LITTLE_ENDIAN ? 24 : 56)));
+      emit_insn (gen_ashldi3_media (cxtload, cxtload, GEN_INT (2)));
+      if (TARGET_LITTLE_ENDIAN)
+	{
+	  emit_insn (gen_mshflo_l_di (quad1, ptabs, cxtload));
+	  emit_insn (gen_mextr4 (quad2, cxtload, blink));
+	}
+      else
+	{
+	  emit_insn (gen_mextr4 (quad1, cxtload, ptabs));
+	  emit_insn (gen_mshflo_l_di (quad2, blink, cxtload));
+	}
+      emit_move_insn (gen_rtx_MEM (DImode, plus_constant (tramp, 8)), quad1);
+      emit_move_insn (gen_rtx_MEM (DImode, plus_constant (tramp, 16)), quad2);
+      emit_insn (gen_ic_invalidate_line (tramp));
+      return;
+    }
+  else if (TARGET_SHCOMPACT)
+    {
+      emit_insn (gen_initialize_trampoline (tramp, cxt, fnaddr));
+      return;
+    }
+  emit_move_insn (gen_rtx_MEM (SImode, tramp),
+		  gen_int_mode (TARGET_LITTLE_ENDIAN ? 0xd301d202 : 0xd202d301,
+				SImode));
+  emit_move_insn (gen_rtx_MEM (SImode, plus_constant (tramp, 4)),
+		  gen_int_mode (TARGET_LITTLE_ENDIAN ? 0x0009422b : 0x422b0009,
+				SImode));
+  emit_move_insn (gen_rtx_MEM (SImode, plus_constant (tramp, 8)),
+		  cxt);
+  emit_move_insn (gen_rtx_MEM (SImode, plus_constant (tramp, 12)),
+		  fnaddr);
+  if (TARGET_HARVARD)
+    {
+      if (TARGET_USERMODE)
+	emit_library_call (gen_rtx_SYMBOL_REF (Pmode, "__ic_invalidate"),
+			   0, VOIDmode, 1, tramp, SImode);
+      else
+	emit_insn (gen_ic_invalidate_line (tramp));
+    }
+}
+

 /* Machine specific built-in functions.  */

--- a/gcc/config/sh/sh.h
+++ b/gcc/config/sh/sh.h
@ -2082,64 +2082,25 @@ while (0)
   6 000c 00000000 	l2:	.long   function  */

 /* Length in units of the trampoline for entering a nested function.  */
-#define TRAMPOLINE_SIZE  (TARGET_SHMEDIA64 ? 40 : TARGET_SH5 ? 32 : 16)
+#define TRAMPOLINE_SIZE  (TARGET_SHMEDIA64 ? 40 : TARGET_SH5 ? 24 : 16)

 /* Alignment required for a trampoline in bits .  */
 #define TRAMPOLINE_ALIGNMENT \
-  ((CACHE_LOG < 3 || (TARGET_SMALLCODE && ! TARGET_HARVARD)) ? 32 : 64)
+  ((CACHE_LOG < 3 || (TARGET_SMALLCODE && ! TARGET_HARVARD)) ? 32 \
+   : TARGET_SHMEDIA ? 256 : 64)

 /* Emit RTL insns to initialize the variable parts of a trampoline.
   FNADDR is an RTX for the address of the function's pure code.
   CXT is an RTX for the static chain value for the function.  */

-#define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) do			\
-{									\
-  if (TARGET_SH5)							\
-    {									\
-      rtx tramp_templ = gen_rtx_SYMBOL_REF (Pmode,			\
-					    "__GCC_nested_trampoline");	\
-      int fixed_len = TRAMPOLINE_SIZE - 2 * GET_MODE_SIZE (Pmode);	\
-									\
-      tramp_templ = gen_datalabel_ref (tramp_templ);			\
-      emit_block_move (gen_rtx_MEM (BLKmode, (TRAMP)),			\
-		       gen_rtx_MEM (BLKmode, tramp_templ),		\
-		       GEN_INT (fixed_len));				\
-      emit_move_insn (gen_rtx_MEM (Pmode, plus_constant ((TRAMP),	\
-							 fixed_len)),	\
-		      (FNADDR));					\
-      emit_move_insn (gen_rtx_MEM (Pmode,				\
-				   plus_constant ((TRAMP),		\
-						  fixed_len		\
-						  + GET_MODE_SIZE (Pmode))), \
-		      (CXT));						\
-      emit_insn (gen_ic_invalidate_line (TRAMP));			\
-      break;								\
-    }									\
-  emit_move_insn (gen_rtx_MEM (SImode, (TRAMP)),			\
-                  GEN_INT (trunc_int_for_mode                  		\
-                         (TARGET_LITTLE_ENDIAN ? 0xd301d202 : 0xd202d301,\
-                          SImode))); \
-  emit_move_insn (gen_rtx_MEM (SImode, plus_constant ((TRAMP), 4)),	\
-		  GEN_INT (TARGET_LITTLE_ENDIAN ? 0x0009422b : 0x422b0009));\
-  emit_move_insn (gen_rtx_MEM (SImode, plus_constant ((TRAMP), 8)),	\
-		  (CXT));						\
-  emit_move_insn (gen_rtx_MEM (SImode, plus_constant ((TRAMP), 12)),	\
-		  (FNADDR));						\
-  if (TARGET_HARVARD)							\
-    {									\
-      if (TARGET_USERMODE)						\
-	emit_library_call (gen_rtx_SYMBOL_REF (Pmode, "__ic_invalidate"),\
-			   0, VOIDmode, 1, (TRAMP), SImode);		\
-      else								\
-	emit_insn (gen_ic_invalidate_line (TRAMP));			\
-    }									\
-} while (0)
+#define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \
+  sh_initialize_trampoline ((TRAMP), (FNADDR), (CXT))

 /* On SH5, trampolines are SHmedia code, so add 1 to the address.  */

 #define TRAMPOLINE_ADJUST_ADDRESS(TRAMP) do				\
 {									\
-  if (TARGET_SH5)							\
+  if (TARGET_SHMEDIA)							\
    (TRAMP) = expand_simple_binop (Pmode, PLUS, (TRAMP), GEN_INT (1),	\
 				   gen_reg_rtx (Pmode), 0,		\
 				   OPTAB_LIB_WIDEN);			\
--- a/gcc/config/sh/sh.md
+++ b/gcc/config/sh/sh.md
@ -3667,6 +3667,8 @@
  [(set_attr "length" "8")
   (set_attr "insn_class" "cwb")])

+;; ??? could make arg 0 an offsettable memory operand to allow to save
+;; an add in the code that calculates the address.
 (define_insn "ic_invalidate_line_media"
  [(unspec_volatile [(match_operand 0 "register_operand" "r")]
 		    UNSPEC_ICACHE)]
@ -3685,6 +3687,37 @@
  [(set_attr "type" "sfunc")
   (set_attr "needs_delay_slot" "yes")])

+(define_expand "initialize_trampoline"
+  [(match_operand:SI 0 "" "")
+   (match_operand:SI 1 "" "")
+   (match_operand:SI 2 "" "")]
+  "TARGET_SHCOMPACT"
+  "
+{
+  rtx sfun, tramp;
+
+  sfun = force_reg (Pmode, gen_rtx_SYMBOL_REF (Pmode, \"__init_trampoline\"));
+  tramp = gen_rtx_REG (SImode, R0_REG);
+  emit_move_insn (tramp, operands[0]);
+  emit_move_insn (gen_rtx_REG (SImode, R2_REG), operands[1]);
+  emit_move_insn (gen_rtx_REG (SImode, R3_REG), operands[2]);
+
+  emit_insn (gen_initialize_trampoline_compact (tramp, sfun));
+  DONE;
+}")
+
+(define_insn "initialize_trampoline_compact"
+  [(unspec_volatile [(match_operand:SI 0 "register_operand" "z")
+		     (match_operand:SI 1 "register_operand" "r")
+		     (reg:SI R2_REG) (reg:SI R3_REG)]
+		    UNSPEC_INIT_TRAMP)
+
+   (clobber (reg:SI PR_REG))]
+  "TARGET_SHCOMPACT"
+  "jsr @%1%#"
+  [(set_attr "type" "sfunc")
+   (set_attr "needs_delay_slot" "yes")])
+
 (define_insn "movqi_i"
  [(set (match_operand:QI 0 "general_movdst_operand" "=r,r,m,r,r,l")
 	(match_operand:QI 1 "general_movsrc_operand"  "ri,m,r,t,l,r"))]
@ -7198,62 +7231,6 @@
  "jsr @r0%#"
  [(set_attr "needs_delay_slot" "yes")])

-;; ??? could make arg 0 an offsettable memory operand - and do likewise
-;; for cache invalidation - to allow to save an add in the code that
-;; calculates the address.
-(define_insn "shmedia32_initialize_trampoline_big"
-  [(set (mem:BLK (match_operand:SI 0 "arith_reg_operand" "r"))
-	(unspec [(match_operand:SI 1 "arith_reg_operand" "r")
-		 (match_operand:SI 2 "arith_reg_operand" "r")]
-	 UNSPEC_INIT_TRAMP))
-   (clobber (match_scratch:SI 3 "=&r"))
-   (clobber (match_scratch:SI 4 "=&r"))]
-  "TARGET_SHMEDIA32 && ! TARGET_LITTLE_ENDIAN"
-  "movi 0x433,%3
-   shori 0x432,%3
-   mshflo.w %1,%3,%4
-   mextr7 %4,%4,%4
-   shlli %4,2,%4
-   st.q %0,0,%4
-   mshflo.w %2,%3,%4
-   shlli %4,10,%4
-   addi %4,0x10,%4
-   movi 0x6bf1,%3
-   shori 0x0600,%3
-   mextr4 %4,%3,%3
-   st.q %0,8,%3
-   shori 0x4401,%4
-   shori 0xfff0,%4
-   st.q %0,16,%4"
-  [(set_attr "length" "64")])
-
-(define_insn "shmedia32_initialize_trampoline_little"
-  [(set (mem:BLK (match_operand:SI 0 "arith_reg_operand" "r"))
-	(unspec [(match_operand:SI 1 "arith_reg_operand" "r")
-		 (match_operand:SI 2 "arith_reg_operand" "r")]
-	 UNSPEC_INIT_TRAMP))
-   (clobber (match_scratch:SI 3 "=&r"))
-   (clobber (match_scratch:SI 4 "=&r"))]
-  "TARGET_SHMEDIA32 && TARGET_LITTLE_ENDIAN"
-  "movi 0x433,%3
-   shori 0x432,%3
-   mshflo.w %1,%3,%4
-   mextr3 %4,%4,%4
-   shlli %4,2,%4
-   st.q %0,0,%4
-   mshflo.w %2,%3,%4
-   shlli %4,10,%4
-   addi %4,0x10,%4
-   movi 0x6bf1,%3
-   shori 0x0600,%3
-   shori 0x4401,%3
-   shori 0xfff0,%3
-   st.l %0,16,%r4
-   st.l %0,20,%r3
-   mshfhi.l %3,%4,%4
-   st.q %0,8,%4"
-  [(set_attr "length" "68")])
-
 (define_expand "prologue"
  [(const_int 0)]
  ""
@ -10263,6 +10240,29 @@
  "mshflo.l	%N2, %N1, %0"
  [(set_attr "type" "arith_media")])

+;; Combiner pattern for trampoline initialization.
+(define_insn_and_split "*double_shori"
+  [(set (match_operand:DI 0 "arith_reg_dest" "=r")
+	(ior:DI (ashift:DI (match_operand:DI 1 "arith_reg_operand" "0")
+                           (const_int 32))
+		(match_operand:DI 2 "const_int_operand" "n")))]
+  "TARGET_SHMEDIA
+   && INTVAL (operands[2]) == trunc_int_for_mode (INTVAL (operands[2]), SImode)"
+  "#"
+  "rtx_equal_p (operands[0], operands[1])"
+  [(const_int 0)]
+  "
+{
+  HOST_WIDE_INT v = INTVAL (operands[2]);
+
+  emit_insn (gen_shori_media (operands[0], operands[0],
+	     gen_int_mode (INTVAL (operands[2]) >> 16, HImode)));
+  emit_insn (gen_shori_media (operands[0], operands[0],
+			      gen_int_mode (v, HImode)));
+  DONE;
+}")
+
+
 (define_insn "*mshflo_l_di_x"
  [(set (match_operand:DI 0 "arith_reg_dest" "=r")
 	(ior:DI (zero_extend:DI (match_operand:SI 1 "extend_reg_or_0_operand"