diff options
Diffstat (limited to 'sys/mips/mips/support.S')
| -rw-r--r-- | sys/mips/mips/support.S | 61 |
1 files changed, 1 insertions, 60 deletions
diff --git a/sys/mips/mips/support.S b/sys/mips/mips/support.S index 6f355f6..8bce22f 100644 --- a/sys/mips/mips/support.S +++ b/sys/mips/mips/support.S @@ -83,8 +83,7 @@ */ /* - * Contains code that is the first executed at boot time plus - * assembly language support routines. + * Contains assembly language support routines. */ #include "opt_ddb.h" @@ -289,7 +288,6 @@ END(copyerr) #ifdef __mips_n64 LEAF(fuword64) ALEAF(fuword) -ALEAF(fuiword) PTR_LA v0, fswberr blt a0, zero, fswberr # make sure address is in user space nop @@ -305,7 +303,6 @@ END(fuword64) LEAF(fuword32) #ifndef __mips_n64 ALEAF(fuword) -ALEAF(fuiword) #endif PTR_LA v0, fswberr blt a0, zero, fswberr # make sure address is in user space @@ -319,7 +316,6 @@ ALEAF(fuiword) END(fuword32) LEAF(fusword) -ALEAF(fuisword) PTR_LA v0, fswberr blt a0, zero, fswberr # make sure address is in user space nop @@ -332,7 +328,6 @@ ALEAF(fuisword) END(fusword) LEAF(fubyte) -ALEAF(fuibyte) PTR_LA v0, fswberr blt a0, zero, fswberr # make sure address is in user space nop @@ -441,30 +436,10 @@ XLEAF(casuword) END(casuword64) #endif -#if 0 - /* unused in FreeBSD */ -/* - * Have to flush instruction cache afterwards. - */ -LEAF(suiword) - PTR_LA v0, fswberr - blt a0, zero, fswberr # make sure address is in user space - nop - GET_CPU_PCPU(v1) - PTR_L v1, PC_CURPCB(v1) - PTR_S v0, U_PCB_ONFAULT(v1) - sw a1, 0(a0) # store word - PTR_S zero, U_PCB_ONFAULT(v1) - j _C_LABEL(Mips_SyncICache) # FlushICache sets v0 = 0. (Ugly) - li a1, 4 # size of word -END(suiword) -#endif - /* * Will have to flush the instruction cache if byte merging is done in hardware. */ LEAF(susword) -ALEAF(suisword) PTR_LA v0, fswberr blt a0, zero, fswberr # make sure address is in user space nop @@ -478,7 +453,6 @@ ALEAF(suisword) END(susword) LEAF(subyte) -ALEAF(suibyte) PTR_LA v0, fswberr blt a0, zero, fswberr # make sure address is in user space nop @@ -1140,39 +1114,6 @@ LEAF(longjmp) li v0, 1 # longjmp return END(longjmp) -LEAF(fusufault) - GET_CPU_PCPU(t0) - lw t0, PC_CURTHREAD(t0) - lw t0, TD_PCB(t0) - li v0, -1 - j ra -END(fusufault) - - /* Define a new md function 'casuptr'. This atomically compares and sets - a pointer that is in user space. It will be used as the basic primitive - for a kernel supported user space lock implementation. */ -LEAF(casuptr) - PTR_LI t0, VM_MAXUSER_ADDRESS /* verify address validity */ - blt a0, t0, fusufault /* trap faults */ - nop - - GET_CPU_PCPU(t1) - lw t1, PC_CURTHREAD(t1) - lw t1, TD_PCB(t1) - - PTR_LA t2, fusufault - PTR_S t2, U_PCB_ONFAULT(t1) -1: - ll v0, 0(a0) /* try to load the old value */ - beq v0, a1, 2f /* compare */ - move t0, a2 /* setup value to write */ - sc t0, 0(a0) /* write if address still locked */ - beq t0, zero, 1b /* if it failed, spin */ -2: - PTR_S zero, U_PCB_ONFAULT(t1) /* clean up */ - j ra -END(casuptr) - LEAF(mips3_ld) .set push .set noreorder |
