Mercurial > hg > CbC > CbC_gcc

comparison gcc/config/fr30/fr30.c @ 55:77e2b8dfacca gcc-4.4.5

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
update it from 4.4.3 to 4.5.0
author ryoma <e075725@ie.u-ryukyu.ac.jp>
date Fri, 12 Feb 2010 23:39:51 +0900
parents a06113de4d67
children b7f97abdc517
comparison
equal deleted inserted replaced
52:c156f1bd5cd9 55:77e2b8dfacca
1 /* FR30 specific functions. 1 /* FR30 specific functions.
2 Copyright (C) 1998, 1999, 2000, 2001, 2002, 2004, 2005, 2007, 2008 2 Copyright (C) 1998, 1999, 2000, 2001, 2002, 2004, 2005, 2007, 2008, 2009
3 Free Software Foundation, Inc. 3 Free Software Foundation, Inc.
4 Contributed by Cygnus Solutions. 4 Contributed by Cygnus Solutions.
5 5
6 This file is part of GCC. 6 This file is part of GCC.
7 7
45 #include "target.h" 45 #include "target.h"
46 #include "target-def.h" 46 #include "target-def.h"
47 47
48 /*}}}*/ 48 /*}}}*/
49 /*{{{ Function Prologues & Epilogues */ 49 /*{{{ Function Prologues & Epilogues */
50
51 /* Define the information needed to generate branch and scc insns. This is
52 stored from the compare operation. */
53
54 struct rtx_def * fr30_compare_op0;
55 struct rtx_def * fr30_compare_op1;
56 50
57 /* The FR30 stack looks like this: 51 /* The FR30 stack looks like this:
58 52
59 Before call After call 53 Before call After call
60 FP ->| | | | 54 FP ->| | | |
123 static void fr30_setup_incoming_varargs (CUMULATIVE_ARGS *, enum machine_mode, 117 static void fr30_setup_incoming_varargs (CUMULATIVE_ARGS *, enum machine_mode,
124 tree, int *, int); 118 tree, int *, int);
125 static bool fr30_must_pass_in_stack (enum machine_mode, const_tree); 119 static bool fr30_must_pass_in_stack (enum machine_mode, const_tree);
126 static int fr30_arg_partial_bytes (CUMULATIVE_ARGS *, enum machine_mode, 120 static int fr30_arg_partial_bytes (CUMULATIVE_ARGS *, enum machine_mode,
127 tree, bool); 121 tree, bool);
128 122 static bool fr30_frame_pointer_required (void);
123 static bool fr30_can_eliminate (const int, const int);
124 static void fr30_asm_trampoline_template (FILE *);
125 static void fr30_trampoline_init (rtx, tree, rtx);
129 126
130 #define FRAME_POINTER_MASK (1 << (FRAME_POINTER_REGNUM)) 127 #define FRAME_POINTER_MASK (1 << (FRAME_POINTER_REGNUM))
131 #define RETURN_POINTER_MASK (1 << (RETURN_POINTER_REGNUM)) 128 #define RETURN_POINTER_MASK (1 << (RETURN_POINTER_REGNUM))
132 129
133 /* Tell prologue and epilogue if register REGNO should be saved / restored. 130 /* Tell prologue and epilogue if register REGNO should be saved / restored.
162 #undef TARGET_SETUP_INCOMING_VARARGS 159 #undef TARGET_SETUP_INCOMING_VARARGS
163 #define TARGET_SETUP_INCOMING_VARARGS fr30_setup_incoming_varargs 160 #define TARGET_SETUP_INCOMING_VARARGS fr30_setup_incoming_varargs
164 #undef TARGET_MUST_PASS_IN_STACK 161 #undef TARGET_MUST_PASS_IN_STACK
165 #define TARGET_MUST_PASS_IN_STACK fr30_must_pass_in_stack 162 #define TARGET_MUST_PASS_IN_STACK fr30_must_pass_in_stack
166 163
164 #undef TARGET_FRAME_POINTER_REQUIRED
165 #define TARGET_FRAME_POINTER_REQUIRED fr30_frame_pointer_required
166
167 #undef TARGET_CAN_ELIMINATE
168 #define TARGET_CAN_ELIMINATE fr30_can_eliminate
169
170 #undef TARGET_ASM_TRAMPOLINE_TEMPLATE
171 #define TARGET_ASM_TRAMPOLINE_TEMPLATE fr30_asm_trampoline_template
172 #undef TARGET_TRAMPOLINE_INIT
173 #define TARGET_TRAMPOLINE_INIT fr30_trampoline_init
174
167 struct gcc_target targetm = TARGET_INITIALIZER; 175 struct gcc_target targetm = TARGET_INITIALIZER;
168 176
177
178 /* Worker function for TARGET_CAN_ELIMINATE. */
179
180 bool
181 fr30_can_eliminate (const int from ATTRIBUTE_UNUSED, const int to)
182 {
183 return (to == FRAME_POINTER_REGNUM || ! frame_pointer_needed);
184 }
185
169 /* Returns the number of bytes offset between FROM_REG and TO_REG 186 /* Returns the number of bytes offset between FROM_REG and TO_REG
170 for the current function. As a side effect it fills in the 187 for the current function. As a side effect it fills in the
171 current_frame_info structure, if the data is available. */ 188 current_frame_info structure, if the data is available. */
172 unsigned int 189 unsigned int
173 fr30_compute_frame_size (int from_reg, int to_reg) 190 fr30_compute_frame_size (int from_reg, int to_reg)
903 end_sequence (); 920 end_sequence ();
904 921
905 return val; 922 return val;
906 } 923 }
907 924
925 /* Implement TARGET_FRAME_POINTER_REQUIRED. */
926
927 bool
928 fr30_frame_pointer_required (void)
929 {
930 return (flag_omit_frame_pointer == 0 || crtl->args.pretend_args_size > 0);
931 }
932
933 /*}}}*/
934 /*{{{ Trampoline Output Routines */
935
936 /* Implement TARGET_ASM_TRAMPOLINE_TEMPLATE.
937 On the FR30, the trampoline is:
938
939 nop
940 ldi:32 STATIC, r12
941 nop
942 ldi:32 FUNCTION, r0
943 jmp @r0
944
945 The no-ops are to guarantee that the static chain and final
946 target are 32 bit aligned within the trampoline. That allows us to
947 initialize those locations with simple SImode stores. The alternative
948 would be to use HImode stores. */
949
950 static void
951 fr30_asm_trampoline_template (FILE *f)
952 {
953 fprintf (f, "\tnop\n");
954 fprintf (f, "\tldi:32\t#0, %s\n", reg_names [STATIC_CHAIN_REGNUM]);
955 fprintf (f, "\tnop\n");
956 fprintf (f, "\tldi:32\t#0, %s\n", reg_names [COMPILER_SCRATCH_REGISTER]);
957 fprintf (f, "\tjmp\t@%s\n", reg_names [COMPILER_SCRATCH_REGISTER]);
958 }
959
960 /* Implement TARGET_TRAMPOLINE_INIT. */
961
962 static void
963 fr30_trampoline_init (rtx m_tramp, tree fndecl, rtx chain_value)
964 {
965 rtx fnaddr = XEXP (DECL_RTL (fndecl), 0);
966 rtx mem;
967
968 emit_block_move (m_tramp, assemble_trampoline_template (),
969 GEN_INT (TRAMPOLINE_SIZE), BLOCK_OP_NORMAL);
970
971 mem = adjust_address (m_tramp, SImode, 4);
972 emit_move_insn (mem, chain_value);
973 mem = adjust_address (m_tramp, SImode, 12);
974 emit_move_insn (mem, fnaddr);
975 }
976
908 /*}}}*/ 977 /*}}}*/
909 /* Local Variables: */ 978 /* Local Variables: */
910 /* folded-file: t */ 979 /* folded-file: t */
911 /* End: */ 980 /* End: */