path: root/recipes/gcc/gcc-4.2.2/gcc-4.0.2-e300c2c3.patch

Adds support for Freescale Power architecture e300c2 and e300c3 cores.
http://www.bitshrine.org/gpp/tc-fsl-x86lnx-e300c3-nptl-4.0.2-2.src.rpm

Leon Woestenberg <leonw@mailcan.com>

Index: gcc-4.1.2/gcc/config/rs6000/e300c2c3.md
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ gcc-4.1.2/gcc/config/rs6000/e300c2c3.md	2007-10-18 15:32:51.000000000 +0200
@@ -0,0 +1,189 @@
+;; Pipeline description for Motorola PowerPC e300c3 core.
+;;   Copyright (C) 2003 Free Software Foundation, Inc.
+;;
+;; This file is part of GCC.
+
+;; GCC is free software; you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published
+;; by the Free Software Foundation; either version 2, or (at your
+;; option) any later version.
+
+;; GCC is distributed in the hope that it will be useful, but WITHOUT
+;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+;; or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
+;; License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GCC; see the file COPYING.  If not, write to the
+;; Free Software Foundation, 59 Temple Place - Suite 330, Boston,
+;; MA 02111-1307, USA.
+
+(define_automaton "ppce300c3_most,ppce300c3_long,ppce300c3_retire")
+(define_cpu_unit "ppce300c3_decode_0,ppce300c3_decode_1" "ppce300c3_most")
+
+;; We don't simulate general issue queue (GIC).  If we have SU insn
+;; and then SU1 insn, they can not be issued on the same cycle
+;; (although SU1 insn and then SU insn can be issued) because the SU
+;; insn will go to SU1 from GIC0 entry.  Fortunately, the first cycle
+;; multipass insn scheduling will find the situation and issue the SU1
+;; insn and then the SU insn.
+(define_cpu_unit "ppce300c3_issue_0,ppce300c3_issue_1"   "ppce300c3_most")
+
+;; We could describe completion buffers slots in combination with the
+;; retirement units and the order of completion but the result
+;; automaton would behave in the same way because we can not describe
+;; real latency time with taking in order completion into account.
+;; Actually we could define the real latency time by querying reserved
+;; automaton units but the current scheduler uses latency time before
+;; issuing insns and making any reservations.
+;;
+;; So our description is aimed to achieve a insn schedule in which the
+;; insns would not wait in the completion buffer.
+(define_cpu_unit "ppce300c3_retire_0,ppce300c3_retire_1" "ppce300c3_retire")
+
+;; Branch unit:
+(define_cpu_unit "ppce300c3_bu" "ppce300c3_most")
+
+;; IU:
+(define_cpu_unit "ppce300c3_iu0_stage0,ppce300c3_iu1_stage0" "ppce300c3_most")
+
+;; IU: This used to describe non-pipelined division.
+(define_cpu_unit "ppce300c3_mu_div" "ppce300c3_long")
+
+;; SRU:
+(define_cpu_unit "ppce300c3_sru_stage0" "ppce300c3_most")
+
+;; Here we simplified LSU unit description not describing the stages.
+(define_cpu_unit "ppce300c3_lsu" "ppce300c3_most")
+
+;; FPU:
+(define_cpu_unit "ppce300c3_fpu" "ppce300c3_most")
+
+;; The following units are used to make automata deterministic
+(define_cpu_unit "present_ppce300c3_decode_0" "ppce300c3_most")
+(define_cpu_unit "present_ppce300c3_issue_0" "ppce300c3_most")
+(define_cpu_unit "present_ppce300c3_retire_0" "ppce300c3_retire")
+(define_cpu_unit "present_ppce300c3_iu0_stage0" "ppce300c3_most")
+
+;; The following sets to make automata deterministic when option ndfa is used.
+(presence_set "present_ppce300c3_decode_0" "ppce300c3_decode_0")
+(presence_set "present_ppce300c3_issue_0" "ppce300c3_issue_0")
+(presence_set "present_ppce300c3_retire_0" "ppce300c3_retire_0")
+(presence_set "present_ppce300c3_iu0_stage0" "ppce300c3_iu0_stage0")
+
+;; Some useful abbreviations.
+(define_reservation "ppce300c3_decode"
+    "ppce300c3_decode_0|ppce300c3_decode_1+present_ppce300c3_decode_0")
+(define_reservation "ppce300c3_issue"
+    "ppce300c3_issue_0|ppce300c3_issue_1+present_ppce300c3_issue_0")
+(define_reservation "ppce300c3_retire"
+   "ppce300c3_retire_0|ppce300c3_retire_1+present_ppce300c3_retire_0")
+(define_reservation "ppce300c3_iu_stage0"
+   "ppce300c3_iu0_stage0|ppce300c3_iu1_stage0+present_ppce300c3_iu0_stage0")
+
+;; Compares can be executed either one of the IU or SRU
+(define_insn_reservation "ppce300c3_cmp" 1
+  (and (eq_attr "type" "cmp,compare,delayed_compare,fast_compare")
+       (ior (eq_attr "cpu" "ppce300c2") (eq_attr "cpu" "ppce300c3")))
+  "ppce300c3_decode,ppce300c3_issue+(ppce300c3_iu_stage0|ppce300c3_sru_stage0) \
+        +ppce300c3_retire")
+
+;; Other one cycle IU insns
+(define_insn_reservation "ppce300c3_iu" 1
+  (and (eq_attr "type" "integer,insert_word")
+       (ior (eq_attr "cpu" "ppce300c2") (eq_attr "cpu" "ppce300c3")))
+  "ppce300c3_decode,ppce300c3_issue+ppce300c3_iu_stage0+ppce300c3_retire")
+
+;; Branch.  Actually this latency time is not used by the scheduler.
+(define_insn_reservation "ppce300c3_branch" 1
+  (and (eq_attr "type" "jmpreg,branch")
+       (ior (eq_attr "cpu" "ppce300c2") (eq_attr "cpu" "ppce300c3")))
+  "ppce300c3_decode,ppce300c3_bu,ppce300c3_retire")
+
+;; Multiply is non-pipelined but can be executed in any IU
+(define_insn_reservation "ppce300c3_multiply" 2
+  (and (eq_attr "type" "imul,imul2,imul3,imul_compare")
+       (ior (eq_attr "cpu" "ppce300c2") (eq_attr "cpu" "ppce300c3")))
+  "ppce300c3_decode,ppce300c3_issue+ppce300c3_iu_stage0, \
+   ppce300c3_iu_stage0+ppce300c3_retire")
+
+;; Divide.  We use the average latency time here.  We omit reserving a
+;; retire unit because of the result automata will be huge.
+(define_insn_reservation "ppce300c3_divide" 20
+  (and (eq_attr "type" "idiv")
+       (ior (eq_attr "cpu" "ppce300c2") (eq_attr "cpu" "ppce300c3")))
+  "ppce300c3_decode,ppce300c3_issue+ppce300c3_iu_stage0+ppce300c3_mu_div,\
+   ppce300c3_mu_div*19")
+
+;; CR logical
+(define_insn_reservation "ppce300c3_cr_logical" 1
+  (and (eq_attr "type" "cr_logical,delayed_cr")
+       (ior (eq_attr "cpu" "ppce300c2") (eq_attr "cpu" "ppce300c3")))
+  "ppce300c3_decode,ppce300c3_issue+ppce300c3_sru_stage0+ppce300c3_retire")
+
+;; Mfcr
+(define_insn_reservation "ppce300c3_mfcr" 1
+  (and (eq_attr "type" "mfcr")
+       (ior (eq_attr "cpu" "ppce300c2") (eq_attr "cpu" "ppce300c3")))
+  "ppce300c3_decode,ppce300c3_issue+ppce300c3_sru_stage0+ppce300c3_retire")
+
+;; Mtcrf
+(define_insn_reservation "ppce300c3_mtcrf" 1
+  (and (eq_attr "type" "mtcr")
+       (ior (eq_attr "cpu" "ppce300c2") (eq_attr "cpu" "ppce300c3")))
+  "ppce300c3_decode,ppce300c3_issue+ppce300c3_sru_stage0+ppce300c3_retire")
+
+;; Mtjmpr
+(define_insn_reservation "ppce300c3_mtjmpr" 1
+  (and (eq_attr "type" "mtjmpr,mfjmpr")
+       (ior (eq_attr "cpu" "ppce300c2") (eq_attr "cpu" "ppce300c3")))
+  "ppce300c3_decode,ppce300c3_issue+ppce300c3_sru_stage0+ppce300c3_retire")
+
+;; Float point instructions
+(define_insn_reservation "ppce300c3_fpcompare" 3
+  (and (eq_attr "type" "fpcompare")
+       (eq_attr "cpu" "ppce300c3"))
+  "ppce300c3_decode,ppce300c3_issue+ppce300c3_fpu,nothing,ppce300c3_retire")
+
+(define_insn_reservation "ppce300c3_fp" 3
+  (and (eq_attr "type" "fp")
+       (eq_attr "cpu" "ppce300c3"))
+  "ppce300c3_decode,ppce300c3_issue+ppce300c3_fpu,nothing,ppce300c3_retire")
+
+(define_insn_reservation "ppce300c3_dmul" 4
+  (and (eq_attr "type" "dmul")
+       (eq_attr "cpu" "ppce300c3"))
+  "ppce300c3_decode,ppce300c3_issue+ppce300c3_fpu,ppce300c3_fpu,nothing,ppce300c3_retire")
+
+; Divides are not pipelined
+(define_insn_reservation "ppce300c3_sdiv" 18
+  (and (eq_attr "type" "sdiv")
+       (eq_attr "cpu" "ppce300c3"))
+  "ppce300c3_decode,ppce300c3_issue+ppce300c3_fpu,ppce300c3_fpu*17")
+
+(define_insn_reservation "ppce300c3_ddiv" 33
+  (and (eq_attr "type" "ddiv")
+       (eq_attr "cpu" "ppce300c3"))
+  "ppce300c3_decode,ppce300c3_issue+ppce300c3_fpu,ppce300c3_fpu*32")
+
+;; Loads
+(define_insn_reservation "ppce300c3_load" 2
+  (and (eq_attr "type" "load,load_ext,load_ext_u,load_ext_ux,load_ux,load_u")
+       (ior (eq_attr "cpu" "ppce300c2") (eq_attr "cpu" "ppce300c3")))
+  "ppce300c3_decode,ppce300c3_issue+ppce300c3_lsu,ppce300c3_retire")
+
+(define_insn_reservation "ppce300c3_fpload" 2
+  (and (eq_attr "type" "fpload,fpload_ux,fpload_u")
+       (eq_attr "cpu" "ppce300c3"))
+  "ppce300c3_decode,ppce300c3_issue+ppce300c3_lsu,ppce300c3_retire")
+
+;; Stores.
+(define_insn_reservation "ppce300c3_store" 2
+  (and (eq_attr "type" "store,store_ux,store_u")
+       (ior (eq_attr "cpu" "ppce300c2") (eq_attr "cpu" "ppce300c3")))
+  "ppce300c3_decode,ppce300c3_issue+ppce300c3_lsu,ppce300c3_retire")
+
+(define_insn_reservation "ppce300c3_fpstore" 2
+  (and (eq_attr "type" "fpstore,fpstore_ux,fpstore_u")
+       (eq_attr "cpu" "ppce300c3"))
+  "ppce300c3_decode,ppce300c3_issue+ppce300c3_lsu,ppce300c3_retire")
Index: gcc-4.1.2/gcc/config/rs6000/rs6000.c
===================================================================
--- gcc-4.1.2.orig/gcc/config/rs6000/rs6000.c	2006-12-16 20:24:56.000000000 +0100
+++ gcc-4.1.2/gcc/config/rs6000/rs6000.c	2007-10-18 15:34:26.000000000 +0200
@@ -557,6 +557,21 @@
   COSTS_N_INSNS (29),   /* ddiv */
 };
 
+/* Instruction costs on E300C2 and E300C3 cores.  */
+static const
+struct processor_costs ppce300c2c3_cost = {
+  COSTS_N_INSNS (4),    /* mulsi */
+  COSTS_N_INSNS (4),    /* mulsi_const */
+  COSTS_N_INSNS (4),    /* mulsi_const9 */
+  COSTS_N_INSNS (4),    /* muldi */
+  COSTS_N_INSNS (19),   /* divsi */
+  COSTS_N_INSNS (19),   /* divdi */
+  COSTS_N_INSNS (3),    /* fp */
+  COSTS_N_INSNS (4),    /* dmul */
+  COSTS_N_INSNS (18),   /* sdiv */
+  COSTS_N_INSNS (33),   /* ddiv */
+};
+
 /* Instruction costs on POWER4 and POWER5 processors.  */
 static const
 struct processor_costs power4_cost = {
@@ -1140,6 +1155,8 @@
 	 /* 8548 has a dummy entry for now.  */
 	 {"8548", PROCESSOR_PPC8540,
 	  POWERPC_BASE_MASK | MASK_PPC_GFXOPT | MASK_STRICT_ALIGN},
+ 	 {"e300c2", PROCESSOR_PPCE300C2, POWERPC_BASE_MASK | MASK_SOFT_FLOAT},
+ 	 {"e300c3", PROCESSOR_PPCE300C3, POWERPC_BASE_MASK},
 	 {"860", PROCESSOR_MPCCORE, POWERPC_BASE_MASK | MASK_SOFT_FLOAT},
 	 {"970", PROCESSOR_POWER4,
 	  POWERPC_7400_MASK | MASK_PPC_GPOPT | MASK_MFCRF | MASK_POWERPC64},
@@ -1529,6 +1546,11 @@
 	rs6000_cost = &ppc8540_cost;
 	break;
 
+      case PROCESSOR_PPCE300C2:
+      case PROCESSOR_PPCE300C3:
+	rs6000_cost = &ppce300c2c3_cost;
+	break;
+
       case PROCESSOR_POWER4:
       case PROCESSOR_POWER5:
 	rs6000_cost = &power4_cost;
@@ -16647,6 +16669,8 @@
   case CPU_PPC750:
   case CPU_PPC7400:
   case CPU_PPC8540:
+  case CPU_PPCE300C2:
+  case CPU_PPCE300C3:
     return 2;
   case CPU_RIOS2:
   case CPU_PPC604:
Index: gcc-4.1.2/gcc/config/rs6000/rs6000.h
===================================================================
--- gcc-4.1.2.orig/gcc/config/rs6000/rs6000.h	2006-11-18 01:25:49.000000000 +0100
+++ gcc-4.1.2/gcc/config/rs6000/rs6000.h	2007-10-18 15:32:51.000000000 +0200
@@ -111,6 +111,8 @@
 %{mcpu=970: -mpower4 -maltivec} \
 %{mcpu=G5: -mpower4 -maltivec} \
 %{mcpu=8540: -me500} \
+%{mcpu=e300c2: -mppc} \
+%{mcpu=e300c3: -mppc -mpmr} \
 %{maltivec: -maltivec} \
 -many"
 
@@ -211,6 +213,8 @@
    PROCESSOR_PPC7400,
    PROCESSOR_PPC7450,
    PROCESSOR_PPC8540,
+   PROCESSOR_PPCE300C2,
+   PROCESSOR_PPCE300C3,
    PROCESSOR_POWER4,
    PROCESSOR_POWER5
 };
Index: gcc-4.1.2/gcc/config/rs6000/rs6000.md
===================================================================
--- gcc-4.1.2.orig/gcc/config/rs6000/rs6000.md	2006-12-16 20:24:56.000000000 +0100
+++ gcc-4.1.2/gcc/config/rs6000/rs6000.md	2007-10-18 15:32:51.000000000 +0200
@@ -103,7 +103,7 @@
 ;; Processor type -- this attribute must exactly match the processor_type
 ;; enumeration in rs6000.h.
 
-(define_attr "cpu" "rios1,rios2,rs64a,mpccore,ppc403,ppc405,ppc440,ppc601,ppc603,ppc604,ppc604e,ppc620,ppc630,ppc750,ppc7400,ppc7450,ppc8540,power4,power5"
+(define_attr "cpu" "rios1,rios2,rs64a,mpccore,ppc403,ppc405,ppc440,ppc601,ppc603,ppc604,ppc604e,ppc620,ppc630,ppc750,ppc7400,ppc7450,ppc8540,ppce300c2,ppce300c3,power4,power5"
   (const (symbol_ref "rs6000_cpu_attr")))
 
 (automata_option "ndfa")
@@ -119,6 +119,7 @@
 (include "7xx.md")
 (include "7450.md")
 (include "8540.md")
+(include "e300c2c3.md")
 (include "power4.md")
 (include "power5.md")
 
Index: gcc-4.1.2/gcc/config.gcc
===================================================================
--- gcc-4.1.2.orig/gcc/config.gcc	2007-10-18 15:26:23.000000000 +0200
+++ gcc-4.1.2/gcc/config.gcc	2007-10-18 15:32:51.000000000 +0200
@@ -2710,7 +2710,7 @@
 			| rios | rios1 | rios2 | rsc | rsc1 | rs64a \
 			| 401 | 403 | 405 | 405fp | 440 | 440fp | 505 \
 			| 601 | 602 | 603 | 603e | ec603e | 604 \
-			| 604e | 620 | 630 | 740 | 750 | 7400 | 7450 \
+			| 604e | 620 | 630 | 740 | 750 | 7400 | 7450 | e300c[23] \
 			| 854[08] | 801 | 821 | 823 | 860 | 970 | G3 | G4 | G5)
 				# OK
 				;;