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authorjoerg <joerg@NetBSD.org>2011-06-16 13:44:56 +0000
committerjoerg <joerg@NetBSD.org>2011-06-16 13:44:56 +0000
commitbee2eac8045fb080e17774151f1a34482d6122b5 (patch)
tree6202c0583f5d87ea14095d8d95731cdbfb98dd91
parent7859d122123f053e93b46b644c17799708d1ffa3 (diff)
Add an optional MD calling convention flag for use in libsa when space
optimisation is critical. Use this on i386 to switch to register passing calling convention for the file system entry points and most assembler call backs that have to preserve at least 3 registers.
-rw-r--r--sys/lib/libsa/stand.h30
-rw-r--r--sys/sys/cdefs.h9
2 files changed, 23 insertions, 16 deletions
diff --git a/sys/lib/libsa/stand.h b/sys/lib/libsa/stand.h
index 371be427cfc..3f45bc13a21 100644
--- a/sys/lib/libsa/stand.h
+++ b/sys/lib/libsa/stand.h
@@ -1,4 +1,4 @@
-/* $NetBSD: stand.h,v 1.71 2011/02/25 00:17:36 joerg Exp $ */
+/* $NetBSD: stand.h,v 1.72 2011/06/16 13:44:56 joerg Exp $ */
/*
* Copyright (c) 1999 Christopher G. Demetriou. All rights reserved.
@@ -87,14 +87,14 @@
struct open_file;
#define FS_DEF(fs) \
- extern int __CONCAT(fs,_open)(const char *, struct open_file *); \
- extern int __CONCAT(fs,_close)(struct open_file *); \
- extern int __CONCAT(fs,_read)(struct open_file *, void *, \
+ extern __compactcall int __CONCAT(fs,_open)(const char *, struct open_file *); \
+ extern __compactcall int __CONCAT(fs,_close)(struct open_file *); \
+ extern __compactcall int __CONCAT(fs,_read)(struct open_file *, void *, \
size_t, size_t *); \
- extern int __CONCAT(fs,_write)(struct open_file *, void *, \
+ extern __compactcall int __CONCAT(fs,_write)(struct open_file *, void *, \
size_t, size_t *); \
- extern off_t __CONCAT(fs,_seek)(struct open_file *, off_t, int); \
- extern int __CONCAT(fs,_stat)(struct open_file *, struct stat *)
+ extern __compactcall off_t __CONCAT(fs,_seek)(struct open_file *, off_t, int); \
+ extern __compactcall int __CONCAT(fs,_stat)(struct open_file *, struct stat *)
/*
* This structure is used to define file system operations in a file system
@@ -105,12 +105,12 @@ extern char *fsmod2;
#if !defined(LIBSA_SINGLE_FILESYSTEM)
struct fs_ops {
- int (*open)(const char *, struct open_file *);
- int (*close)(struct open_file *);
- int (*read)(struct open_file *, void *, size_t, size_t *);
- int (*write)(struct open_file *, void *, size_t size, size_t *);
- off_t (*seek)(struct open_file *, off_t, int);
- int (*stat)(struct open_file *, struct stat *);
+ __compactcall int (*open)(const char *, struct open_file *);
+ __compactcall int (*close)(struct open_file *);
+ __compactcall int (*read)(struct open_file *, void *, size_t, size_t *);
+ __compactcall int (*write)(struct open_file *, void *, size_t size, size_t *);
+ __compactcall off_t (*seek)(struct open_file *, off_t, int);
+ __compactcall int (*stat)(struct open_file *, struct stat *);
};
extern struct fs_ops file_system[];
@@ -215,8 +215,8 @@ int (devopen)(struct open_file *, const char *, char **);
#ifdef HEAP_VARIABLE
void setheap(void *, void *);
#endif
-void *alloc(size_t);
-void dealloc(void *, size_t);
+void *alloc(size_t) __compactcall;
+void dealloc(void *, size_t) __compactcall;
struct disklabel;
char *getdisklabel(const char *, struct disklabel *);
int dkcksum(const struct disklabel *);
diff --git a/sys/sys/cdefs.h b/sys/sys/cdefs.h
index b92b490937b..eb1c18ab91a 100644
--- a/sys/sys/cdefs.h
+++ b/sys/sys/cdefs.h
@@ -1,4 +1,4 @@
-/* $NetBSD: cdefs.h,v 1.84 2011/02/19 02:21:21 matt Exp $ */
+/* $NetBSD: cdefs.h,v 1.85 2011/06/16 13:51:26 joerg Exp $ */
/*
* Copyright (c) 1991, 1993
@@ -64,6 +64,13 @@
#endif
/*
+ * Optional marker for size-optimised MD calling convention.
+ */
+#ifndef __compactcall
+#define __compactcall
+#endif
+
+/*
* The __CONCAT macro is used to concatenate parts of symbol names, e.g.
* with "#define OLD(foo) __CONCAT(old,foo)", OLD(foo) produces oldfoo.
* The __CONCAT macro is a bit tricky -- make sure you don't put spaces