From: [email protected]

Hello All,

the appended patch adds mutex support for mips/mipsel (Regenerating the
config files of this build system is a PITA).

Steve, you tagged this bug as sarge-ignore, is this really still
relevant?


Thiemo


--- dbinc/mutex.h.old 2003-09-20 23:40:49.000000000 +0200
+++ dbinc/mutex.h 2004-08-19 21:26:16.000000000 +0200
@@ -487,6 +487,48 @@ typedef unsigned char tsl_t;
#endif

/*********************************************************************
+ * MIPS/gcc assembly.
+ *********************************************************************/ +#ifdef HAVE_MUTEX_MIPS_GCC_ASSEMBLY
+typedef u_int32_t tsl_t;
+
+#ifndef MUTEX_ALIGN
+#define MUTEX_ALIGN 4
+#endif
+
+#ifdef LOAD_ACTUAL_MUTEX_CODE
+/*
+ * For gcc/mips. Should return 0 if could not acquire the lock, 1 if
+ * lock was acquired properly.
+ */
+static inline int
+MUTEX_SET(tsl_t *tsl) {
+ register tsl_t *__l = tsl;
+ register tsl_t __r;
+ asm volatile(
+ " .set push \n"
+ " .set mips2 \n"
+ " .set noreorder \n"
+ "1: ll %0, %1 \n"
+ " bnez %0, 1f \n"
+ " nop \n"
+ " addu %0, 1 \n"
+ " sc %0, %1 \n"
+ " beqz %0, 1b \n"
+ " move %0, $0 \n"
+ " sync \n"
+ "1: .set pop \n"
+ : "=&r" (__r), "+m" (*__l)
+ : :