[PATCH] powerpc: Consolidate asm compatibility macros

This patch consolidates macros used to generate assembly for
compatibility across different CPUs or configs.  A new header,
asm-powerpc/asm-compat.h contains the main compatibility macros.  It
uses some preprocessor magic to make the macros suitable both for use
in .S files, and in inline asm in .c files.  Headers (bitops.h,
uaccess.h, atomic.h, bug.h) which had their own such compatibility
macros are changed to use asm-compat.h.

ppc_asm.h is now for use in .S files *only*, and a #error enforces
that.  As such, we're a lot more careless about namespace pollution
here than in asm-compat.h.

While we're at it, this patch adds a call to the PPC405_ERR77 macro in
futex.h which should have had it already, but didn't.

Built and booted on pSeries, Maple and iSeries (ARCH=powerpc).  Built
for 32-bit powermac (ARCH=powerpc) and Walnut (ARCH=ppc).

Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

3 files changed, 101 insertions, 100 deletions

diff --git a/arch/powerpc/kernel/fpu.S b/arch/powerpc/kernel/fpu.S
index 4d6001fa1cf2..b780b42c95fc 100644
--- a/arch/powerpc/kernel/fpu.S
+++ b/arch/powerpc/kernel/fpu.S
@@ -41,20 +41,20 @@ _GLOBAL(load_up_fpu)
 #ifndef CONFIG_SMP
         LOADBASE(r3, last_task_used_math)
         toreal(r3)
-        LDL     r4,OFF(last_task_used_math)(r3)
-        CMPI    0,r4,0
+        PPC_LL  r4,OFF(last_task_used_math)(r3)
+        PPC_LCMPI       0,r4,0
         beq     1f
         toreal(r4)
         addi    r4,r4,THREAD            /* want last_task_used_math->thread */
         SAVE_32FPRS(0, r4)
         mffs    fr0
         stfd    fr0,THREAD_FPSCR(r4)
-        LDL     r5,PT_REGS(r4)
+        PPC_LL  r5,PT_REGS(r4)
         toreal(r5)
-        LDL     r4,_MSR-STACK_FRAME_OVERHEAD(r5)
+        PPC_LL  r4,_MSR-STACK_FRAME_OVERHEAD(r5)
         li      r10,MSR_FP|MSR_FE0|MSR_FE1
         andc    r4,r4,r10               /* disable FP for previous task */
-        STL     r4,_MSR-STACK_FRAME_OVERHEAD(r5)
+        PPC_STL r4,_MSR-STACK_FRAME_OVERHEAD(r5)
 1:
 #endif /* CONFIG_SMP */
         /* enable use of FP after return */
@@ -77,7 +77,7 @@ _GLOBAL(load_up_fpu)
 #ifndef CONFIG_SMP
         subi    r4,r5,THREAD
         fromreal(r4)
-        STL     r4,OFF(last_task_used_math)(r3)
+        PPC_STL r4,OFF(last_task_used_math)(r3)
 #endif /* CONFIG_SMP */
         /* restore registers and return */
         /* we haven't used ctr or xer or lr */
@@ -97,24 +97,24 @@ _GLOBAL(giveup_fpu)
         MTMSRD(r5)                      /* enable use of fpu now */
         SYNC_601
         isync
-        CMPI    0,r3,0
+        PPC_LCMPI       0,r3,0
         beqlr-                          /* if no previous owner, done */
         addi    r3,r3,THREAD            /* want THREAD of task */
-        LDL     r5,PT_REGS(r3)
-        CMPI    0,r5,0
+        PPC_LL  r5,PT_REGS(r3)
+        PPC_LCMPI       0,r5,0
         SAVE_32FPRS(0, r3)
         mffs    fr0
         stfd    fr0,THREAD_FPSCR(r3)
         beq     1f
-        LDL     r4,_MSR-STACK_FRAME_OVERHEAD(r5)
+        PPC_LL  r4,_MSR-STACK_FRAME_OVERHEAD(r5)
         li      r3,MSR_FP|MSR_FE0|MSR_FE1
         andc    r4,r4,r3                /* disable FP for previous task */
-        STL     r4,_MSR-STACK_FRAME_OVERHEAD(r5)
+        PPC_STL r4,_MSR-STACK_FRAME_OVERHEAD(r5)
 1:
 #ifndef CONFIG_SMP
         li      r5,0
         LOADBASE(r4,last_task_used_math)
-        STL     r5,OFF(last_task_used_math)(r4)
+        PPC_STL r5,OFF(last_task_used_math)(r4)
 #endif /* CONFIG_SMP */
         blr
 
diff --git a/arch/powerpc/platforms/iseries/misc.S b/arch/powerpc/platforms/iseries/misc.S
index 09f14522e176..dfe7aa1ba098 100644
--- a/arch/powerpc/platforms/iseries/misc.S
+++ b/arch/powerpc/platforms/iseries/misc.S
@@ -15,6 +15,7 @@
 
 #include <asm/processor.h>
 #include <asm/asm-offsets.h>
+#include <asm/ppc_asm.h>
 
         .text
 
diff --git a/arch/powerpc/xmon/setjmp.S b/arch/powerpc/xmon/setjmp.S
index f8e40dfd2bff..96a91f10e2ec 100644
--- a/arch/powerpc/xmon/setjmp.S
+++ b/arch/powerpc/xmon/setjmp.S
@@ -14,61 +14,61 @@
 
 _GLOBAL(xmon_setjmp)
         mflr    r0
-        STL     r0,0(r3)
-        STL     r1,SZL(r3)
-        STL     r2,2*SZL(r3)
+        PPC_STL r0,0(r3)
+        PPC_STL r1,SZL(r3)
+        PPC_STL r2,2*SZL(r3)
         mfcr    r0
-        STL     r0,3*SZL(r3)
-        STL     r13,4*SZL(r3)
-        STL     r14,5*SZL(r3)
-        STL     r15,6*SZL(r3)
-        STL     r16,7*SZL(r3)
-        STL     r17,8*SZL(r3)
-        STL     r18,9*SZL(r3)
-        STL     r19,10*SZL(r3)
-        STL     r20,11*SZL(r3)
-        STL     r21,12*SZL(r3)
-        STL     r22,13*SZL(r3)
-        STL     r23,14*SZL(r3)
-        STL     r24,15*SZL(r3)
-        STL     r25,16*SZL(r3)
-        STL     r26,17*SZL(r3)
-        STL     r27,18*SZL(r3)
-        STL     r28,19*SZL(r3)
-        STL     r29,20*SZL(r3)
-        STL     r30,21*SZL(r3)
-        STL     r31,22*SZL(r3)
+        PPC_STL r0,3*SZL(r3)
+        PPC_STL r13,4*SZL(r3)
+        PPC_STL r14,5*SZL(r3)
+        PPC_STL r15,6*SZL(r3)
+        PPC_STL r16,7*SZL(r3)
+        PPC_STL r17,8*SZL(r3)
+        PPC_STL r18,9*SZL(r3)
+        PPC_STL r19,10*SZL(r3)
+        PPC_STL r20,11*SZL(r3)
+        PPC_STL r21,12*SZL(r3)
+        PPC_STL r22,13*SZL(r3)
+        PPC_STL r23,14*SZL(r3)
+        PPC_STL r24,15*SZL(r3)
+        PPC_STL r25,16*SZL(r3)
+        PPC_STL r26,17*SZL(r3)
+        PPC_STL r27,18*SZL(r3)
+        PPC_STL r28,19*SZL(r3)
+        PPC_STL r29,20*SZL(r3)
+        PPC_STL r30,21*SZL(r3)
+        PPC_STL r31,22*SZL(r3)
         li      r3,0
         blr
 
 _GLOBAL(xmon_longjmp)
-        CMPI    r4,0
+        PPC_LCMPI r4,0
         bne     1f
         li      r4,1
-1:      LDL     r13,4*SZL(r3)
-        LDL     r14,5*SZL(r3)
-        LDL     r15,6*SZL(r3)
-        LDL     r16,7*SZL(r3)
-        LDL     r17,8*SZL(r3)
-        LDL     r18,9*SZL(r3)
-        LDL     r19,10*SZL(r3)
-        LDL     r20,11*SZL(r3)
-        LDL     r21,12*SZL(r3)
-        LDL     r22,13*SZL(r3)
-        LDL     r23,14*SZL(r3)
-        LDL     r24,15*SZL(r3)
-        LDL     r25,16*SZL(r3)
-        LDL     r26,17*SZL(r3)
-        LDL     r27,18*SZL(r3)
-        LDL     r28,19*SZL(r3)
-        LDL     r29,20*SZL(r3)
-        LDL     r30,21*SZL(r3)
-        LDL     r31,22*SZL(r3)
-        LDL     r0,3*SZL(r3)
+1:      PPC_LL  r13,4*SZL(r3)
+        PPC_LL  r14,5*SZL(r3)
+        PPC_LL  r15,6*SZL(r3)
+        PPC_LL  r16,7*SZL(r3)
+        PPC_LL  r17,8*SZL(r3)
+        PPC_LL  r18,9*SZL(r3)
+        PPC_LL  r19,10*SZL(r3)
+        PPC_LL  r20,11*SZL(r3)
+        PPC_LL  r21,12*SZL(r3)
+        PPC_LL  r22,13*SZL(r3)
+        PPC_LL  r23,14*SZL(r3)
+        PPC_LL  r24,15*SZL(r3)
+        PPC_LL  r25,16*SZL(r3)
+        PPC_LL  r26,17*SZL(r3)
+        PPC_LL  r27,18*SZL(r3)
+        PPC_LL  r28,19*SZL(r3)
+        PPC_LL  r29,20*SZL(r3)
+        PPC_LL  r30,21*SZL(r3)
+        PPC_LL  r31,22*SZL(r3)
+        PPC_LL  r0,3*SZL(r3)
         mtcrf   0x38,r0
-        LDL     r0,0(r3)
-        LDL     r1,SZL(r3)
-        LDL     r2,2*SZL(r3)
+        PPC_LL  r0,0(r3)
+        PPC_LL  r1,SZL(r3)
+        PPC_LL  r2,2*SZL(r3)
         mtlr    r0
         mr      r3,r4
         blr
@@ -84,52 +84,52 @@ _GLOBAL(xmon_longjmp)
  * different ABIs, though).
  */
 _GLOBAL(xmon_save_regs)
-        STL     r0,0*SZL(r3)
-        STL     r2,2*SZL(r3)
-        STL     r3,3*SZL(r3)
-        STL     r4,4*SZL(r3)
-        STL     r5,5*SZL(r3)
-        STL     r6,6*SZL(r3)
-        STL     r7,7*SZL(r3)
-        STL     r8,8*SZL(r3)
-        STL     r9,9*SZL(r3)
-        STL     r10,10*SZL(r3)
-        STL     r11,11*SZL(r3)
-        STL     r12,12*SZL(r3)
-        STL     r13,13*SZL(r3)
-        STL     r14,14*SZL(r3)
-        STL     r15,15*SZL(r3)
-        STL     r16,16*SZL(r3)
-        STL     r17,17*SZL(r3)
-        STL     r18,18*SZL(r3)
-        STL     r19,19*SZL(r3)
-        STL     r20,20*SZL(r3)
-        STL     r21,21*SZL(r3)
-        STL     r22,22*SZL(r3)
-        STL     r23,23*SZL(r3)
-        STL     r24,24*SZL(r3)
-        STL     r25,25*SZL(r3)
-        STL     r26,26*SZL(r3)
-        STL     r27,27*SZL(r3)
-        STL     r28,28*SZL(r3)
-        STL     r29,29*SZL(r3)
-        STL     r30,30*SZL(r3)
-        STL     r31,31*SZL(r3)
+        PPC_STL r0,0*SZL(r3)
+        PPC_STL r2,2*SZL(r3)
+        PPC_STL r3,3*SZL(r3)
+        PPC_STL r4,4*SZL(r3)
+        PPC_STL r5,5*SZL(r3)
+        PPC_STL r6,6*SZL(r3)
+        PPC_STL r7,7*SZL(r3)
+        PPC_STL r8,8*SZL(r3)
+        PPC_STL r9,9*SZL(r3)
+        PPC_STL r10,10*SZL(r3)
+        PPC_STL r11,11*SZL(r3)
+        PPC_STL r12,12*SZL(r3)
+        PPC_STL r13,13*SZL(r3)
+        PPC_STL r14,14*SZL(r3)
+        PPC_STL r15,15*SZL(r3)
+        PPC_STL r16,16*SZL(r3)
+        PPC_STL r17,17*SZL(r3)
+        PPC_STL r18,18*SZL(r3)
+        PPC_STL r19,19*SZL(r3)
+        PPC_STL r20,20*SZL(r3)
+        PPC_STL r21,21*SZL(r3)
+        PPC_STL r22,22*SZL(r3)
+        PPC_STL r23,23*SZL(r3)
+        PPC_STL r24,24*SZL(r3)
+        PPC_STL r25,25*SZL(r3)
+        PPC_STL r26,26*SZL(r3)
+        PPC_STL r27,27*SZL(r3)
+        PPC_STL r28,28*SZL(r3)
+        PPC_STL r29,29*SZL(r3)
+        PPC_STL r30,30*SZL(r3)
+        PPC_STL r31,31*SZL(r3)
         /* go up one stack frame for SP */
-        LDL     r4,0(r1)
-        STL     r4,1*SZL(r3)
+        PPC_LL  r4,0(r1)
+        PPC_STL r4,1*SZL(r3)
         /* get caller's LR */
-        LDL     r0,LRSAVE(r4)
-        STL     r0,_NIP-STACK_FRAME_OVERHEAD(r3)
-        STL     r0,_LINK-STACK_FRAME_OVERHEAD(r3)
+        PPC_LL  r0,LRSAVE(r4)
+        PPC_STL r0,_NIP-STACK_FRAME_OVERHEAD(r3)
+        PPC_STL r0,_LINK-STACK_FRAME_OVERHEAD(r3)
         mfmsr   r0
-        STL     r0,_MSR-STACK_FRAME_OVERHEAD(r3)
+        PPC_STL r0,_MSR-STACK_FRAME_OVERHEAD(r3)
         mfctr   r0
-        STL     r0,_CTR-STACK_FRAME_OVERHEAD(r3)
+        PPC_STL r0,_CTR-STACK_FRAME_OVERHEAD(r3)
         mfxer   r0
-        STL     r0,_XER-STACK_FRAME_OVERHEAD(r3)
+        PPC_STL r0,_XER-STACK_FRAME_OVERHEAD(r3)
         mfcr    r0
-        STL     r0,_CCR-STACK_FRAME_OVERHEAD(r3)
+        PPC_STL r0,_CCR-STACK_FRAME_OVERHEAD(r3)
         li      r0,0
-        STL     r0,_TRAP-STACK_FRAME_OVERHEAD(r3)
+        PPC_STL r0,_TRAP-STACK_FRAME_OVERHEAD(r3)
         blr