PR target/41246

	* target.h (struct gcc_target): Add asm_out.trampoline_template,
	calls.static_chain, calls.trampoline_init,
	calls.trampoline_adjust_address.
	* target-def.h (TARGET_ASM_TRAMPOLINE_TEMPLATE): New.
	(TARGET_STATIC_CHAIN, TARGET_TRAMPOLINE_INIT): New.
	(TARGET_TRAMPOLINE_ADJUST_ADDRESS): New.
	* builtins.c (expand_builtin_setjmp_receiver): Use
	targetm.calls.static_chain; only clobber registers.
	(expand_builtin_init_trampoline): Use targetm.calls.trampoline_init;
	set up memory attributes properly for the trampoline block.
	(expand_builtin_adjust_trampoline): Use
	targetm.calls.trampoline_adjust_address.
	* calls.c (prepare_call_address): Add fndecl argument.  Use
	targetm.calls.static_chain.
	* df-scan.c (df_need_static_chain_reg): Remove.
	(df_get_entry_block_def_set): Use targetm.calls.static_chain;
	consolodate static chain handling.
	* doc/tm.texi: Document new hooks.
	* emit-rtl.c (static_chain_rtx, static_chain_incoming_rtx): Remove.
	(init_emit_regs): Don't initialize them.
	* expr.h (prepare_call_address): Update decl.
	* final.c (profile_function): Use targetm.calls.static_chain.
	* function.c (expand_function_start): Likewise.
	* rtl.h (static_chain_rtx, static_chain_incoming_rtx): Remove.
	* stmt.c (expand_nl_goto_receiver): Use targetm.calls.static_chain;
	only clobber registers.
	* targhooks.c (default_static_chain): New.
	(default_asm_trampoline_template, default_trampoline_init): New.
	(default_trampoline_adjust_address): New.
	* targhooks.h: Declare them.
	* varasm.c (assemble_trampoline_template): Use
	targetm.asm_out.trampoline_template.  Make the memory block const
	and set its size.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@151983 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 14 insertions, 1 deletions

diff --git a/gcc/target.h b/gcc/target.h
index c57b683a4fc..f964b6975f8 100644
--- a/gcc/target.h
+++ b/gcc/target.h
@@ -253,6 +253,9 @@ struct gcc_target
 
     /* Some target machines need to postscan each insn after it is output.  */
     void (*final_postscan_insn) (FILE *, rtx, rtx *, int);
+
+    /* Emit the trampoline template.  This hook may be NULL.  */
+    void (*trampoline_template) (FILE *);
   } asm_out;
 
   /* Functions relating to instruction scheduling.  */
@@ -915,7 +918,17 @@ struct gcc_target
     /* Return true if all function parameters should be spilled to the
        stack.  */
     bool (*allocate_stack_slots_for_args) (void);
-    
+
+    /* Return an rtx for the static chain for FNDECL.  If INCOMING_P is true,
+       then it should be for the callee; otherwise for the caller.  */
+    rtx (*static_chain) (const_tree fndecl, bool incoming_p);
+
+    /* Fill in the trampoline at MEM with a call to FNDECL and a 
+       static chain value of CHAIN.  */
+    void (*trampoline_init) (rtx mem, tree fndecl, rtx chain);
+
+    /* Adjust the address of the trampoline in a target-specific way.  */
+    rtx (*trampoline_adjust_address) (rtx addr);
   } calls;
 
   /* Return the diagnostic message string if conversion from FROMTYPE