X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fppc%2Fvm.lisp;h=12b552c5e2a8da3fb7160a383bc9b4449a387242;hb=1d46d379bb7a6424524b978f213ef69be5f1ad69;hp=6e20e088533848f3ed64c21f4602e17e8b28d416;hpb=8731c1a7c1a585d190151fa881050fb5e14c0616;p=sbcl.git

diff --git a/src/compiler/ppc/vm.lisp b/src/compiler/ppc/vm.lisp
index 6e20e08..12b552c 100644
--- a/src/compiler/ppc/vm.lisp
+++ b/src/compiler/ppc/vm.lisp
@@ -1,4 +1,14 @@
-;;;
+;;;; miscellaneous VM definition noise for the PPC
+
+;;;; 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.
+
 (in-package "SB!VM")
 
 
@@ -31,8 +41,13 @@
   (defreg nl6 9)
   (defreg fdefn 10)			; was nl7
   (defreg nargs 11)
-  (defreg nfp 12)
-  (defreg cfunc 13)
+  ;; FIXME: some kind of comment here would be nice.
+  ;;
+  ;; FIXME II: this also reveals the need to autogenerate lispregs.h
+  #!+darwin  (defreg cfunc 12)
+  #!-darwin  (defreg nfp 12)
+  #!+darwin  (defreg nfp 13)
+  #!-darwin  (defreg cfunc 13)
   (defreg bsp 14)
   (defreg cfp 15)
   (defreg csp 16)
@@ -93,9 +108,7 @@
       ((null classes)
        (nreverse forms))))
 
-;; XXX this is most likely wrong.  Check with Eric Marsden next time you
-;; see him
-(def!constant sb!vm::kludge-nondeterministic-catch-block-size 7)
+(def!constant kludge-nondeterministic-catch-block-size 7)
 
 (define-storage-classes
 
@@ -216,9 +229,7 @@
 
   ;; A catch or unwind block.
   (catch-block control-stack
-               :element-size sb!vm::kludge-nondeterministic-catch-block-size))
-
-
+               :element-size kludge-nondeterministic-catch-block-size))
 
 ;;;; Make some random tns for important registers.
 
@@ -242,14 +253,9 @@
   (defregtn cfp any-reg)
   (defregtn ocfp any-reg)
   (defregtn nsp any-reg))
-
-
 
-;;; Immediate-Constant-SC  --  Interface
-;;;
-;;; If value can be represented as an immediate constant, then return the
+;;; If VALUE can be represented as an immediate constant, then return the
 ;;; appropriate SC number, otherwise return NIL.
-;;;
 (!def-vm-support-routine immediate-constant-sc (value)
   (typecase value
     ((integer 0 0)
@@ -262,32 +268,28 @@
      (if (static-symbol-p value)
 	 (sc-number-or-lose 'immediate)
 	 nil))))
-
 
-;;;; Function Call Parameters
+;;;; function call parameters
 
-;;; The SC numbers for register and stack arguments/return values.
-;;;
+;;; the SC numbers for register and stack arguments/return values
 (def!constant register-arg-scn (meta-sc-number-or-lose 'descriptor-reg))
 (def!constant immediate-arg-scn (meta-sc-number-or-lose 'any-reg))
 (def!constant control-stack-arg-scn (meta-sc-number-or-lose 'control-stack))
 
 (eval-when (:compile-toplevel :load-toplevel :execute)
 
-;;; Offsets of special stack frame locations
+;;; offsets of special stack frame locations
 (def!constant ocfp-save-offset 0)
 (def!constant lra-save-offset 1)
 (def!constant nfp-save-offset 2)
 
-;;; The number of arguments/return values passed in registers.
-;;;
+;;; the number of arguments/return values passed in registers
 (def!constant register-arg-count 4)
 
-;;; Names to use for the argument registers.
-;;; 
+;;; names to use for the argument registers
 
 
-); Eval-When (:compile-toplevel :load-toplevel :execute)
+) ; EVAL-WHEN
 
 
 ;;; A list of TN's describing the register arguments.
@@ -301,18 +303,11 @@
 
 (export 'single-value-return-byte-offset)
 
-;;; SINGLE-VALUE-RETURN-BYTE-OFFSET
-;;;
 ;;; This is used by the debugger.
-;;;
 (def!constant single-value-return-byte-offset 8)
-
 
-;;; LOCATION-PRINT-NAME  --  Interface
-;;;
-;;;    This function is called by debug output routines that want a pretty name
+;;; This function is called by debug output routines that want a pretty name
 ;;; for a TN's location.  It returns a thing that can be printed with PRINC.
-;;;
 (!def-vm-support-routine location-print-name (tn)
   (declare (type tn tn))
   (let ((sb (sb-name (sc-sb (tn-sc tn))))
@@ -325,3 +320,13 @@
       (non-descriptor-stack (format nil "NS~D" offset))
       (constant (format nil "Const~D" offset))
       (immediate-constant "Immed"))))
+
+;;; The loader uses this to convert alien names to the form they
+;;; occur in the symbol table.  This is ELF, so do nothing.
+
+(defun extern-alien-name (name)
+  (declare (type simple-base-string name))
+  ;; Darwin is non-ELF, and needs a _ prefix
+  #!+darwin (concatenate 'string "_" name)
+  ;; The other (ELF) ports currently don't need any prefix
+  #!-darwin name)