0.7.6.1:

[sbcl.git] / src / runtime / ldso-stubs.S

diff --git a/src/runtime/ldso-stubs.S b/src/runtime/ldso-stubs.S
index f786dd0..37006fb 100644 (file)
--- a/src/runtime/ldso-stubs.S
+++ b/src/runtime/ldso-stubs.S
@@ -1,8 +1,17 @@
 /*
- * stubs for C-linkage library functions used by the runtime
+ * stubs for C-linkage library functions which we need to refer to 
+ * from Lisp 
  *
- * These are needed because the locations of the libraries are
- * filled in by the dynamic linker ld.so at runtime.
+ * (But note this is only the Linux version, as per the FIXME
+ * note in the BSD version in undefineds.h.)
+ *
+ * These stubs exist for the benefit of Lisp code that needs to refer 
+ * to foreign symbols when dlsym() is not available (i.e. when dumping
+ * cold-sbcl.core, when we may be running in a host that's not SBCL,
+ * or on platforms that don't have it at all). If the runtime is
+ * dynamically linked, library functions won't be linked into it, so
+ * the map file won't show them. So, we need a bunch of stubs that
+ * nm(1) _can_ see.  
  */
 
 /*
@@ -15,21 +24,67 @@
  * provided with absolutely no warranty. See the COPYING and CREDITS
  * files for more information.
  */
-
-       .file   "ldso-stubs.S"
-       .version        "01.01"
-gcc2_compiled.:
+#define LANGUAGE_ASSEMBLY
+#include "sbcl.h"
         .text
 
-#define LDSO_STUBIFY(fct) \
-       .align 16 ; \
-.globl ldso_stub__ ## fct ; \
+#if defined LISP_FEATURE_X86
+       
+#define LDSO_STUBIFY(fct)                       \
+       .align 16 ;                             \
+.globl ldso_stub__ ## fct ;                     \
+       .type    ldso_stub__ ## fct,@function ; \
+ldso_stub__ ## fct: ;                           \
+       jmp fct ;                               \
+.L ## fct ## e1: ;                              \
+       .size    ldso_stub__ ## fct,.L ## fct ## e1-ldso_stub__ ## fct ;
+
+#elif ((defined LISP_FEATURE_OSF1) && (defined LISP_FEATURE_ALPHA))
+/* osf1 has ancient cpp that doesn't do ## */
+#define LDSO_STUBIFY(fct)                       \
+.globl ldso_stub__/**/fct ;                     \
+ldso_stub__/**/fct: ;                           \
+       jmp fct ;                               \
+.L/**/fct/**/e1: ;                              
+
+
+#elif ((defined LISP_FEATURE_LINUX) && (defined LISP_FEATURE_ALPHA))   
+/* but there's no reason we need to put up with that on modern (Linux) OSes */
+#define LDSO_STUBIFY(fct)                       \
+.globl ldso_stub__ ## fct ;                     \
        .type    ldso_stub__ ## fct,@function ; \
-ldso_stub__ ## fct: ; \
-       jmp fct ; \
-.L ## fct ## e1: ; \
+ldso_stub__ ## fct: ;                           \
+       jmp fct ;                               \
+.L ## fct ## e1: ;                              \
        .size    ldso_stub__ ## fct,.L ## fct ## e1-ldso_stub__ ## fct ;
 
+#elif defined LISP_FEATURE_PPC
+#define LDSO_STUBIFY(fct)                       \
+.globl ldso_stub__ ## fct ;                     \
+       .type    ldso_stub__ ## fct,@function ; \
+ldso_stub__ ## fct: ;                           \
+        b fct ;                                 \
+.L ## fct ## e1: ;                              \
+        .size    ldso_stub__ ## fct,.L ## fct ## e1-ldso_stub__ ## fct ;
+       
+#elif defined LISP_FEATURE_SPARC
+       
+       /* This is an attempt to follow DB's hint of sbcl-devel
+        * 2001-09-18. -- CSR */
+#define LDSO_STUBIFY(fct)                       \
+.globl ldso_stub__ ## fct ;                     \
+       .type    ldso_stub__ ## fct,@function ; \
+ldso_stub__ ## fct: ;                           \
+       sethi %hi(fct),%g1      ;               \
+       jmpl %g1+%lo(fct),%g0   ;               \
+       nop /* delay slot*/     ;               \
+.L ## fct ## e1: ;                              \
+       .size    ldso_stub__ ## fct,.L ## fct ## e1-ldso_stub__ ## fct ;
+       
+#else
+#error unsupported CPU architecture
+#endif
+       
  LDSO_STUBIFY(accept)
  LDSO_STUBIFY(access)
  LDSO_STUBIFY(acos)
@@ -70,7 +125,6 @@ ldso_stub__ ## fct: ; \
  LDSO_STUBIFY(getegid)
  LDSO_STUBIFY(getenv)
  LDSO_STUBIFY(getgid)
- LDSO_STUBIFY(gethostid)
  LDSO_STUBIFY(gethostbyaddr)
  LDSO_STUBIFY(gethostbyname)
  LDSO_STUBIFY(gethostname)
@@ -111,13 +165,14 @@ ldso_stub__ ## fct: ; \
  LDSO_STUBIFY(send)
  LDSO_STUBIFY(setitimer)
  LDSO_STUBIFY(setpgrp)
- LDSO_STUBIFY(sigblock)
- LDSO_STUBIFY(sigpause)
+#if !defined(SVR4)
  LDSO_STUBIFY(sigsetmask)
+#endif
  LDSO_STUBIFY(sinh)
  LDSO_STUBIFY(socket)
  LDSO_STUBIFY(stat)
  LDSO_STUBIFY(strerror)
+ LDSO_STUBIFY(strlen)
  LDSO_STUBIFY(symlink)
  LDSO_STUBIFY(sync)
  LDSO_STUBIFY(tanh)
@@ -134,3 +189,27 @@ ldso_stub__ ## fct: ; \
  LDSO_STUBIFY(utimes)
  LDSO_STUBIFY(wait3)   
  LDSO_STUBIFY(write)
+
+/*
+ * These aren't needed on the X86 because they're microcoded into the
+ * FPU, so the Lisp VOPs can implement them directly without having to
+ * call C code.
+ *
+ * Note: There might be some other functions in this category as well.
+ * E.g. I notice tanh() and acos() in the list above.. -- WHN 2001-06-07
+ */
+#if !defined __i386__
+ LDSO_STUBIFY(sin)
+ LDSO_STUBIFY(cos) 
+ LDSO_STUBIFY(tan)      
+ LDSO_STUBIFY(atan) 
+ LDSO_STUBIFY(atan2) 
+ LDSO_STUBIFY(exp)      
+ LDSO_STUBIFY(log) 
+ LDSO_STUBIFY(log10) 
+ LDSO_STUBIFY(sqrt) 
+#endif
+#if defined alpha
+ LDSO_STUBIFY(ieee_get_fp_control)
+ LDSO_STUBIFY(ieee_set_fp_control)
+#endif