X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Fmips-assem.S;h=4eabf21855c52070c0672befffe125efb7c67288;hb=dd54f9e004a0a83d1328e94648f48dcc27e0be5b;hp=4be362842b4f2218a0cc2c04ad7d2cbe76a48364;hpb=3f13400e4297ea4b572da50e5fc926b2c3a3f07b;p=sbcl.git

diff --git a/src/runtime/mips-assem.S b/src/runtime/mips-assem.S
index 4be3628..4eabf21 100644
--- a/src/runtime/mips-assem.S
+++ b/src/runtime/mips-assem.S
@@ -1,8 +1,24 @@
+/*
+ * very-low-level utilities for runtime support
+ */
+
+/*
+ * This software is part of the SBCL system. See the README file for
+ * more information.
+ *
+ * This software is derived from the CMU CL system, which was
+ * written at Carnegie Mellon University and released into the
+ * public domain. The software is in the public domain and is
+ * provided with absolutely no warranty. See the COPYING and CREDITS
+ * files for more information.
+ */
+
 #include "sbcl.h"
 #include "lispregs.h"
 #include "globals.h"
 #include "genesis/fdefn.h"
 #include "genesis/closure.h"
+#include "genesis/funcallable-instance.h"
 #include "genesis/return-pc.h"
 #include "genesis/simple-fun.h"
 #include "genesis/static-symbols.h"
@@ -176,14 +192,14 @@ lra:	.word	RETURN_PC_HEADER_WIDETAG
 	/* Nested lisp -> C calls may have clobbered gp. */
 	lw	gp, framesize-16(sp)
 
+	/* Mark us as in C land. */
+	sw	reg_CSP, foreign_function_call_active
+
 	/* Set the pseudo-atomic flag. */
 	li	reg_NL4, 0
 	addu	reg_ALLOC, 1
 	.set	reorder
 
-	/* Mark us as in C land. */
-	sw	reg_CSP, foreign_function_call_active
-
 	/* Save LISP state. */
 	subu	reg_NL0, reg_ALLOC, 1
 	sw	reg_NL0, dynamic_space_free_pointer
@@ -246,15 +262,15 @@ lra:	.word	RETURN_PC_HEADER_WIDETAG
 	move	reg_CFP, reg_CSP
 	addu	reg_CSP, reg_CFP, 32
 
+	/* Mark us as in C land. */
+	sw	reg_CSP, foreign_function_call_active
+
 	/* Set the pseudo-atomic flag. */
 	.set	noreorder
 	li	reg_NL4, 0
 	addu	reg_ALLOC, 1
 	.set	reorder
 
-	/* Mark us as in C land. */
-	sw	reg_CSP, foreign_function_call_active
-
 	/* Convert the return address to an offset and save it on the stack. */
 	subu	reg_NFP, reg_LIP, reg_CODE
 	addu	reg_NFP, OTHER_POINTER_LOWTAG
@@ -358,13 +374,14 @@ lra:	.word	RETURN_PC_HEADER_WIDETAG
 	.word   NIL /* name */
 	.word	NIL /* arglist */
 	.word	NIL /* type */
+	.word	NIL /* xrefs */
 	LEAF(undefined_tramp)
 	/* Point reg_CODE to the header and tag it as function, since
 	   the debugger regards a function pointer in reg_CODE which
 	   doesn't point to a code object as undefined function.  */
 	lui	reg_CODE, %hi(undefined_tramp)
 	addiu	reg_CODE, %lo(undefined_tramp)
-	addiu	reg_CODE, - 24 + FUN_POINTER_LOWTAG
+	addiu	reg_CODE, -SIMPLE_FUN_CODE_OFFSET
 	.set	noreorder
 	b	1f
 	 break	0x0, trap_Cerror
@@ -397,6 +414,7 @@ lra:	.word	RETURN_PC_HEADER_WIDETAG
 	.word   NIL /* name */
 	.word	NIL /* arglist */
 	.word	NIL /* type */
+	.word	NIL /* xrefs */
 	LEAF(closure_tramp)
         lw	reg_LEXENV, FDEFN_FUN_OFFSET(reg_FDEFN)
         lw	reg_CODE, CLOSURE_FUN_OFFSET(reg_LEXENV)
@@ -405,14 +423,40 @@ lra:	.word	RETURN_PC_HEADER_WIDETAG
 	END(closure_tramp)
 
 /*
+ * The trampoline for funcallable instances
+ */
+	.globl funcallable_instance_tramp
+	.align	3
+	.word	SIMPLE_FUN_HEADER_WIDETAG
+funcallable_instance_tramp = . + 1
+	.word	funcallable_instance_tramp
+	.word	NIL
+	.word	NIL
+	.word	NIL
+	.word	NIL
+	.word	NIL
+
+	lw	reg_LEXENV, FUNCALLABLE_INSTANCE_FUNCTION_OFFSET(reg_LEXENV)
+	lw	reg_CODE, CLOSURE_FUN_OFFSET(reg_LEXENV)
+	addu	reg_LIP, reg_CODE, SIMPLE_FUN_CODE_OFFSET
+	jr	reg_LIP
+	nop
+
+/*
  * Function-end breakpoint magic. This is truely magic, the code is
  * copied and has to be relocatable. It also needs a properly aligned
  * header tag after the fun_end_breakpoint_guts symbol.
  */
+
+/*
+ * For an explanation of the magic involved in function-end
+ * breakpoints, see the implementation in ppc-assem.S.
+ */
+
 	.align  3 /* minimum alignment for a lisp object */
 	LEAF(fun_end_breakpoint_guts)
 	.set    noreorder
-	.word   RETURN_PC_HEADER_WIDETAG
+	.word   RETURN_PC_HEADER_WIDETAG + 0x800
 	b       multiple_value_return
 	 nop
 	.set    reorder
@@ -431,7 +475,16 @@ lra:	.word	RETURN_PC_HEADER_WIDETAG
 multiple_value_return:
 
 	FEXPORT(fun_end_breakpoint_trap)
-	break	0x0, trap_FunEndBreakpoint
+	.set    noreorder
 	b	multiple_value_return
+	 break	0x0, trap_FunEndBreakpoint
+	.set    reorder
 	EXPORT(fun_end_breakpoint_end)
 	END(fun_end_breakpoint_guts)
+
+
+	.align  3 /* minimum alignment for a lisp object */
+        LEAF(do_pending_interrupt)
+	break	0x0, trap_PendingInterrupt
+	jr	reg_LIP
+	END(do_pending_interrupt)