From 831d6fa520ed43d055924607a2d9be7fcc3813e9 Mon Sep 17 00:00:00 2001
From: Christopher Faylor <me@cgf.cx>
Date: Wed, 30 Oct 2002 21:05:18 +0000
Subject: * external.cc (cygwin_internal): Implement CW_CMDLINE. * pinfo.h
 (SIGCOMMUNE): New signal type. (commune_result): New structure for commune
 functions. (picom): New enum for commune functions. (_pinfo::hello_pid): New.
  Pid who's communicating with me. (_pinfo::tothem): New.  Handle of
 communicating pipe. (_pinfo::fromthem): Ditto. (_pinfo::commune_recv):
 Declare. (_pinfo::commune_send): Declare. (_pinfo::alive): Declare.
 (_pinfo::cmdline): Declare. (_pinfo::lock): Declare. * pinfo.cc (set_myself):
 Initialize new _pinfo lock. (_pinfo::alive): Define.  Determines if process
 still exists. (_pinfo::commune_recv): Define.  Receive info from another
 cooperating process. (_pinfo::commune_send): Define.  Send info to another
 cooperating process. (_pinfo::cmdline): Define.  Determine command line of a
 given process. * include/sys/cygwin.h (CW_CMDLINE): Define. *sigproc.cc
 (talktome): Communicate with any processes who want to talk to me.
 (wait_sig): Honor __SIGCOMMUNE. * fhandler.cc
 (fhandler_virtual::fixup_after_exec): Declare. * fhandler_proc.cc: Use
 malloc/free/realloc throughout rather than cmalloc since buffers don't need
 to be propagated to subprocesses. * fhandler_registry.cc: Ditto. *
 fhandler_virtual.cc: Ditto. (fhandler_virtual::fixup_after_exec): Define. *
 fhandler_process.cc: Ditto for malloc/free/realloc. (process_listin): Add
 "cmdline". (fhandler_process::fill_filebuf): Implement PROCESS_CMDLINE. *
 miscfuncs.cc (isalpha_array): New array populated with xor values for alpha
 characters to switch from one case to another. * string.h
 (cygwin_strcasematch): New asm implementation of case match. * string.h
 (cygwin_nstrcasematch): New asm implementation of counted case match.

---
 winsup/cygwin/string.h | 64 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 64 insertions(+)

(limited to 'winsup/cygwin/string.h')

diff --git a/winsup/cygwin/string.h b/winsup/cygwin/string.h
index 84dc14cb7..778bb40ac 100644
--- a/winsup/cygwin/string.h
+++ b/winsup/cygwin/string.h
@@ -38,6 +38,70 @@ strchr (const char *s, int c)
   return res;
 }
 
+extern const char isalpha_array[];
+
+#undef strcasematch
+#define strcasematch cygwin_strcasematch
+
+static inline int
+cygwin_strcasematch (const char *cs, const char *ct)
+{
+  register int __res;
+  int d0, d1;
+  __asm__ ("\
+	.global	_isalpha_array			\n\
+	cld					\n\
+	andl	$0xff,%%eax			\n\
+1:	lodsb					\n\
+	scasb					\n\
+	je	2f				\n\
+	xorb	_isalpha_array(%%eax),%%al	\n\
+	cmpb	-1(%%edi),%%al			\n\
+	jne	3f				\n\
+2:	testb	%%al,%%al			\n\
+	jnz	1b				\n\
+	movl	$1,%%eax			\n\
+	jmp	4f				\n\
+3:	xor	%0,%0				\n\
+4:"
+        :"=a" (__res), "=&S" (d0), "=&D" (d1)
+		     : "1" (cs),   "2" (ct));
+
+  return __res;
+}
+
+#undef strncasematch
+#define strncasematch cygwin_strncasematch
+
+static inline int
+cygwin_strncasematch (const char *cs, const char *ct, size_t n)
+{
+  register int __res;
+  int d0, d1, d2;
+  __asm__ ("\
+	.global	_isalpha_array;			\n\
+	cld					\n\
+	andl	$0xff,%%eax			\n\
+1:	decl	%3				\n\
+	js	3f				\n\
+	lodsb					\n\
+	scasb					\n\
+	je	2f				\n\
+	xorb	_isalpha_array(%%eax),%%al	\n\
+	cmpb	-1(%%edi),%%al			\n\
+	jne	4f				\n\
+2:	testb	%%al,%%al			\n\
+	jnz	1b				\n\
+3:	movl	$1,%%eax			\n\
+	jmp	5f				\n\
+4:	xor	%0,%0				\n\
+5:"
+	:"=a" (__res), "=&S" (d0), "=&D" (d1), "=&c" (d2)
+		       :"1" (cs),  "2" (ct), "3" (n));
+
+  return __res;
+}
+
 #ifdef __cplusplus
 }
 #endif
-- 
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