Changeset 53f9821 in mainline for arch/mips32

Timestamp:

2006-03-20T20:32:17Z (20 years ago)

Author:

Ondrej Palkovsky <ondrap@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

018d957e

Parents:

9d3e185

Message:

Cleanup of spinlocks, now compiles both ia32 and amd64 with
and without DEBUG_SPINLOCKS. Made spinlocks inline.
Moved syscall_handler to generic (it was identical for ia32,amd64 & mips32).
Made slightly faster syscall for ia32.
Made better interrupt routines for ia32.
Allow not saving non-scratch registers during interrupt on ia32,amd64,mips32.
Aligned interrupt handlers on ia32,amd64, this should prevent problems
with different instruction lengths.

Location:

arch/mips32

Files:

• include/exception.h (modified) (1 diff)
• src/exception.c (modified) (2 diffs)
• src/start.S (modified) (3 diffs)

arch/mips32/include/exception.h

@@ -99 +99 @@
 extern void cache_error_entry(void);
 extern void exception_init(void);
-extern __native syscall_handler(__native a0, __native a1, __native a2,
-                                __native a3, __native sysnum);
+
 #endif

arch/mips32/src/exception.c

@@ -41 +41 @@
 #include <console/kconsole.h>
 #include <arch/debugger.h>
-#include <syscall/syscall.h>
 
 static char * exctable[] = {
@@ -130 +129 @@
 }
 
-__native syscall_handler(__native a0, __native a1, __native a2,
-                         __native a3, __native sysnum)
-{
-        if (sysnum < SYSCALL_END)
-                return syscall_table[sysnum](a0,a1,a2,a3);
-        panic("Undefined syscall %d", sysnum);
-}
-
 /** Handle syscall userspace call */
 static void syscall_exception(int n, istate_t *istate)

arch/mips32/src/start.S

@@ -216 +216 @@
         sub $k1, 8            # 8=SYSCALL
         
-        beqz $k1, uspace_shortcut
+        beqz $k1, syscall_shortcut
         add $k1, 8            # Revert $k1 back to correct exc number
         
@@ -229 +229 @@
         # The $sp is automatically restored to former value
         eret
-        nop
 
 # it seems that mips reserves some space on stack for varfuncs???
@@ -236 +235 @@
 #define SS_STATUS 24
 #define SS_EPC    28
-uspace_shortcut:
+syscall_shortcut:
         # We have a lot of space on the stack, with free use
         sw $sp, SS_SP($k0)