[PATCH] powerpc: Merged ppc_asm.h

Merged ppc_asm.h between ppc32 & ppc64.  The majority of the file is
common between the two architectures excluding how a single GPR is
saved/restored and which GPRs are non-volatile.

Additionally, moved the ASM_CONST macro used on ppc64 into ppc_asm.h.

Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 437 insertions, 0 deletions

diff --git a/include/asm-powerpc/ppc_asm.h b/include/asm-powerpc/ppc_asm.h
new file mode 100644
index 000000000000..553035cda00e
--- /dev/null
+++ b/include/asm-powerpc/ppc_asm.h
@@ -0,0 +1,437 @@
+/*
+ * Copyright (C) 1995-1999 Gary Thomas, Paul Mackerras, Cort Dougan.
+ */
+
+#ifndef _ASM_POWERPC_PPC_ASM_H
+#define _ASM_POWERPC_PPC_ASM_H
+
+#ifdef __ASSEMBLY__
+
+/*
+ * Macros for storing registers into and loading registers from
+ * exception frames.
+ */
+#ifdef __powerpc64__
+#define SAVE_GPR(n, base)       std     n,GPR0+8*(n)(base)
+#define REST_GPR(n, base)       ld      n,GPR0+8*(n)(base)
+#define SAVE_NVGPRS(base)       SAVE_8GPRS(14, base); SAVE_10GPRS(22, base)
+#define REST_NVGPRS(base)       REST_8GPRS(14, base); REST_10GPRS(22, base)
+#else
+#define SAVE_GPR(n, base)       stw     n,GPR0+4*(n)(base)
+#define REST_GPR(n, base)       lwz     n,GPR0+4*(n)(base)
+#define SAVE_NVGPRS(base)       SAVE_GPR(13, base); SAVE_8GPRS(14, base); \
+                                SAVE_10GPRS(22, base)
+#define REST_NVGPRS(base)       REST_GPR(13, base); REST_8GPRS(14, base); \
+                                REST_10GPRS(22, base)
+#endif
+
+
+#define SAVE_2GPRS(n, base)     SAVE_GPR(n, base); SAVE_GPR(n+1, base)
+#define SAVE_4GPRS(n, base)     SAVE_2GPRS(n, base); SAVE_2GPRS(n+2, base)
+#define SAVE_8GPRS(n, base)     SAVE_4GPRS(n, base); SAVE_4GPRS(n+4, base)
+#define SAVE_10GPRS(n, base)    SAVE_8GPRS(n, base); SAVE_2GPRS(n+8, base)
+#define REST_2GPRS(n, base)     REST_GPR(n, base); REST_GPR(n+1, base)
+#define REST_4GPRS(n, base)     REST_2GPRS(n, base); REST_2GPRS(n+2, base)
+#define REST_8GPRS(n, base)     REST_4GPRS(n, base); REST_4GPRS(n+4, base)
+#define REST_10GPRS(n, base)    REST_8GPRS(n, base); REST_2GPRS(n+8, base)
+
+#define SAVE_FPR(n, base)       stfd    n,THREAD_FPR0+8*(n)(base)
+#define SAVE_2FPRS(n, base)     SAVE_FPR(n, base); SAVE_FPR(n+1, base)
+#define SAVE_4FPRS(n, base)     SAVE_2FPRS(n, base); SAVE_2FPRS(n+2, base)
+#define SAVE_8FPRS(n, base)     SAVE_4FPRS(n, base); SAVE_4FPRS(n+4, base)
+#define SAVE_16FPRS(n, base)    SAVE_8FPRS(n, base); SAVE_8FPRS(n+8, base)
+#define SAVE_32FPRS(n, base)    SAVE_16FPRS(n, base); SAVE_16FPRS(n+16, base)
+#define REST_FPR(n, base)       lfd     n,THREAD_FPR0+8*(n)(base)
+#define REST_2FPRS(n, base)     REST_FPR(n, base); REST_FPR(n+1, base)
+#define REST_4FPRS(n, base)     REST_2FPRS(n, base); REST_2FPRS(n+2, base)
+#define REST_8FPRS(n, base)     REST_4FPRS(n, base); REST_4FPRS(n+4, base)
+#define REST_16FPRS(n, base)    REST_8FPRS(n, base); REST_8FPRS(n+8, base)
+#define REST_32FPRS(n, base)    REST_16FPRS(n, base); REST_16FPRS(n+16, base)
+
+#define SAVE_VR(n,b,base)       li b,THREAD_VR0+(16*(n));  stvx n,b,base
+#define SAVE_2VRS(n,b,base)     SAVE_VR(n,b,base); SAVE_VR(n+1,b,base)
+#define SAVE_4VRS(n,b,base)     SAVE_2VRS(n,b,base); SAVE_2VRS(n+2,b,base)
+#define SAVE_8VRS(n,b,base)     SAVE_4VRS(n,b,base); SAVE_4VRS(n+4,b,base)
+#define SAVE_16VRS(n,b,base)    SAVE_8VRS(n,b,base); SAVE_8VRS(n+8,b,base)
+#define SAVE_32VRS(n,b,base)    SAVE_16VRS(n,b,base); SAVE_16VRS(n+16,b,base)
+#define REST_VR(n,b,base)       li b,THREAD_VR0+(16*(n)); lvx n,b,base
+#define REST_2VRS(n,b,base)     REST_VR(n,b,base); REST_VR(n+1,b,base)
+#define REST_4VRS(n,b,base)     REST_2VRS(n,b,base); REST_2VRS(n+2,b,base)
+#define REST_8VRS(n,b,base)     REST_4VRS(n,b,base); REST_4VRS(n+4,b,base)
+#define REST_16VRS(n,b,base)    REST_8VRS(n,b,base); REST_8VRS(n+8,b,base)
+#define REST_32VRS(n,b,base)    REST_16VRS(n,b,base); REST_16VRS(n+16,b,base)
+
+#define SAVE_EVR(n,s,base)      evmergehi s,s,n; stw s,THREAD_EVR0+4*(n)(base)
+#define SAVE_2EVRS(n,s,base)    SAVE_EVR(n,s,base); SAVE_EVR(n+1,s,base)
+#define SAVE_4EVRS(n,s,base)    SAVE_2EVRS(n,s,base); SAVE_2EVRS(n+2,s,base)
+#define SAVE_8EVRS(n,s,base)    SAVE_4EVRS(n,s,base); SAVE_4EVRS(n+4,s,base)
+#define SAVE_16EVRS(n,s,base)   SAVE_8EVRS(n,s,base); SAVE_8EVRS(n+8,s,base)
+#define SAVE_32EVRS(n,s,base)   SAVE_16EVRS(n,s,base); SAVE_16EVRS(n+16,s,base)
+#define REST_EVR(n,s,base)      lwz s,THREAD_EVR0+4*(n)(base); evmergelo n,s,n
+#define REST_2EVRS(n,s,base)    REST_EVR(n,s,base); REST_EVR(n+1,s,base)
+#define REST_4EVRS(n,s,base)    REST_2EVRS(n,s,base); REST_2EVRS(n+2,s,base)
+#define REST_8EVRS(n,s,base)    REST_4EVRS(n,s,base); REST_4EVRS(n+4,s,base)
+#define REST_16EVRS(n,s,base)   REST_8EVRS(n,s,base); REST_8EVRS(n+8,s,base)
+#define REST_32EVRS(n,s,base)   REST_16EVRS(n,s,base); REST_16EVRS(n+16,s,base)
+
+/* Macros to adjust thread priority for Iseries hardware multithreading */
+#define HMT_LOW         or 1,1,1
+#define HMT_MEDIUM      or 2,2,2
+#define HMT_HIGH        or 3,3,3
+
+/* handle instructions that older assemblers may not know */
+#define RFCI            .long 0x4c000066        /* rfci instruction */
+#define RFDI            .long 0x4c00004e        /* rfdi instruction */
+#define RFMCI           .long 0x4c00004c        /* rfmci instruction */
+
+/* 
+ * LOADADDR( rn, name )
+ *   loads the address of 'name' into 'rn'
+ *
+ * LOADBASE( rn, name )
+ *   loads the address (less the low 16 bits) of 'name' into 'rn'
+ *   suitable for base+disp addressing
+ */
+#ifdef __powerpc64__
+#define LOADADDR(rn,name) \
+        lis     rn,name##@highest;      \
+        ori     rn,rn,name##@higher;    \
+        rldicr  rn,rn,32,31;            \
+        oris    rn,rn,name##@h;         \
+        ori     rn,rn,name##@l
+
+#define LOADBASE(rn,name) \
+        lis     rn,name@highest;        \
+        ori     rn,rn,name@higher;      \
+        rldicr  rn,rn,32,31;            \
+        oris    rn,rn,name@ha
+
+
+#define SET_REG_TO_CONST(reg, value)                    \
+        lis     reg,(((value)>>48)&0xFFFF);             \
+        ori     reg,reg,(((value)>>32)&0xFFFF);         \
+        rldicr  reg,reg,32,31;                          \
+        oris    reg,reg,(((value)>>16)&0xFFFF);         \
+        ori     reg,reg,((value)&0xFFFF);
+
+#define SET_REG_TO_LABEL(reg, label)                    \
+        lis     reg,(label)@highest;                    \
+        ori     reg,reg,(label)@higher;                 \
+        rldicr  reg,reg,32,31;                          \
+        oris    reg,reg,(label)@h;                      \
+        ori     reg,reg,(label)@l;
+#endif
+
+/* various errata or part fixups */
+#ifdef CONFIG_PPC601_SYNC_FIX
+#define SYNC                            \
+BEGIN_FTR_SECTION                       \
+        sync;                           \
+        isync;                          \
+END_FTR_SECTION_IFSET(CPU_FTR_601)
+#define SYNC_601                        \
+BEGIN_FTR_SECTION                       \
+        sync;                           \
+END_FTR_SECTION_IFSET(CPU_FTR_601)
+#define ISYNC_601                       \
+BEGIN_FTR_SECTION                       \
+        isync;                          \
+END_FTR_SECTION_IFSET(CPU_FTR_601)
+#else
+#define SYNC
+#define SYNC_601
+#define ISYNC_601
+#endif
+
+
+#ifndef CONFIG_SMP
+#define TLBSYNC
+#else /* CONFIG_SMP */
+/* tlbsync is not implemented on 601 */
+#define TLBSYNC                         \
+BEGIN_FTR_SECTION                       \
+        tlbsync;                        \
+        sync;                           \
+END_FTR_SECTION_IFCLR(CPU_FTR_601)
+#endif
+
+        
+/*
+ * This instruction is not implemented on the PPC 603 or 601; however, on
+ * the 403GCX and 405GP tlbia IS defined and tlbie is not.
+ * All of these instructions exist in the 8xx, they have magical powers,
+ * and they must be used.
+ */
+
+#if !defined(CONFIG_4xx) && !defined(CONFIG_8xx)
+#define tlbia                                   \
+        li      r4,1024;                        \
+        mtctr   r4;                             \
+        lis     r4,KERNELBASE@h;                \
+0:      tlbie   r4;                             \
+        addi    r4,r4,0x1000;                   \
+        bdnz    0b
+#endif
+
+
+#ifdef CONFIG_IBM405_ERR77
+#define PPC405_ERR77(ra,rb)     dcbt    ra, rb;
+#define PPC405_ERR77_SYNC       sync;
+#else
+#define PPC405_ERR77(ra,rb)
+#define PPC405_ERR77_SYNC
+#endif
+
+
+#ifdef CONFIG_IBM440EP_ERR42
+#define PPC440EP_ERR42 isync
+#else
+#define PPC440EP_ERR42
+#endif
+
+
+#if defined(CONFIG_BOOKE)
+#define tophys(rd,rs)                           \
+        addis   rd,rs,0
+
+#define tovirt(rd,rs)                           \
+        addis   rd,rs,0
+
+#elif defined(CONFIG_PPC64)
+/* PPPBBB - DRENG  If KERNELBASE is always 0xC0...,
+ * Then we can easily do this with one asm insn. -Peter
+ */
+#define tophys(rd,rs)                           \
+        lis     rd,((KERNELBASE>>48)&0xFFFF);   \
+        rldicr  rd,rd,32,31;                    \
+        sub     rd,rs,rd
+
+#define tovirt(rd,rs)                           \
+        lis     rd,((KERNELBASE>>48)&0xFFFF);   \
+        rldicr  rd,rd,32,31;                    \
+        add     rd,rs,rd
+#else
+/*
+ * On APUS (Amiga PowerPC cpu upgrade board), we don't know the
+ * physical base address of RAM at compile time.
+ */
+#define tophys(rd,rs)                           \
+0:      addis   rd,rs,-KERNELBASE@h;            \
+        .section ".vtop_fixup","aw";            \
+        .align  1;                              \
+        .long   0b;                             \
+        .previous
+
+#define tovirt(rd,rs)                           \
+0:      addis   rd,rs,KERNELBASE@h;             \
+        .section ".ptov_fixup","aw";            \
+        .align  1;                              \
+        .long   0b;                             \
+        .previous
+#endif
+
+/*
+ * On 64-bit cpus, we use the rfid instruction instead of rfi, but
+ * we then have to make sure we preserve the top 32 bits except for
+ * the 64-bit mode bit, which we clear.
+ */
+#if defined(CONFIG_PPC64BRIDGE)
+#define FIX_SRR1(ra, rb)        \
+        mr      rb,ra;          \
+        mfmsr   ra;             \
+        clrldi  ra,ra,1;                /* turn off 64-bit mode */ \
+        rldimi  ra,rb,0,32
+#define RFI             .long   0x4c000024      /* rfid instruction */
+#define MTMSRD(r)       .long   (0x7c000164 + ((r) << 21))      /* mtmsrd */
+#define CLR_TOP32(r)    rlwinm  (r),(r),0,0,31  /* clear top 32 bits */
+#elif defined(CONFIG_PPC64)
+/* Insert the high 32 bits of the MSR into what will be the new
+   MSR (via SRR1 and rfid)  This preserves the MSR.SF and MSR.ISF
+   bits. */
+
+#define FIX_SRR1(ra, rb)        \
+        mr      rb,ra;          \
+        mfmsr   ra;             \
+        rldimi  ra,rb,0,32
+
+#define CLR_TOP32(r)    rlwinm  (r),(r),0,0,31  /* clear top 32 bits */
+
+#else
+#define FIX_SRR1(ra, rb)
+#ifndef CONFIG_40x
+#define RFI             rfi
+#else
+#define RFI             rfi; b .        /* Prevent prefetch past rfi */
+#endif
+#define MTMSRD(r)       mtmsr   r
+#define CLR_TOP32(r)
+#endif
+
+/* The boring bits... */
+
+/* Condition Register Bit Fields */
+
+#define cr0     0
+#define cr1     1
+#define cr2     2
+#define cr3     3
+#define cr4     4
+#define cr5     5
+#define cr6     6
+#define cr7     7
+
+
+/* General Purpose Registers (GPRs) */
+
+#define r0      0
+#define r1      1
+#define r2      2
+#define r3      3
+#define r4      4
+#define r5      5
+#define r6      6
+#define r7      7
+#define r8      8
+#define r9      9
+#define r10     10
+#define r11     11
+#define r12     12
+#define r13     13
+#define r14     14
+#define r15     15
+#define r16     16
+#define r17     17
+#define r18     18
+#define r19     19
+#define r20     20
+#define r21     21
+#define r22     22
+#define r23     23
+#define r24     24
+#define r25     25
+#define r26     26
+#define r27     27
+#define r28     28
+#define r29     29
+#define r30     30
+#define r31     31
+
+
+/* Floating Point Registers (FPRs) */
+
+#define fr0     0
+#define fr1     1
+#define fr2     2
+#define fr3     3
+#define fr4     4
+#define fr5     5
+#define fr6     6
+#define fr7     7
+#define fr8     8
+#define fr9     9
+#define fr10    10
+#define fr11    11
+#define fr12    12
+#define fr13    13
+#define fr14    14
+#define fr15    15
+#define fr16    16
+#define fr17    17
+#define fr18    18
+#define fr19    19
+#define fr20    20
+#define fr21    21
+#define fr22    22
+#define fr23    23
+#define fr24    24
+#define fr25    25
+#define fr26    26
+#define fr27    27
+#define fr28    28
+#define fr29    29
+#define fr30    30
+#define fr31    31
+
+/* AltiVec Registers (VPRs) */
+
+#define vr0     0
+#define vr1     1
+#define vr2     2
+#define vr3     3
+#define vr4     4
+#define vr5     5
+#define vr6     6
+#define vr7     7
+#define vr8     8
+#define vr9     9
+#define vr10    10
+#define vr11    11
+#define vr12    12
+#define vr13    13
+#define vr14    14
+#define vr15    15
+#define vr16    16
+#define vr17    17
+#define vr18    18
+#define vr19    19
+#define vr20    20
+#define vr21    21
+#define vr22    22
+#define vr23    23
+#define vr24    24
+#define vr25    25
+#define vr26    26
+#define vr27    27
+#define vr28    28
+#define vr29    29
+#define vr30    30
+#define vr31    31
+
+/* SPE Registers (EVPRs) */
+
+#define evr0    0
+#define evr1    1
+#define evr2    2
+#define evr3    3
+#define evr4    4
+#define evr5    5
+#define evr6    6
+#define evr7    7
+#define evr8    8
+#define evr9    9
+#define evr10   10
+#define evr11   11
+#define evr12   12
+#define evr13   13
+#define evr14   14
+#define evr15   15
+#define evr16   16
+#define evr17   17
+#define evr18   18
+#define evr19   19
+#define evr20   20
+#define evr21   21
+#define evr22   22
+#define evr23   23
+#define evr24   24
+#define evr25   25
+#define evr26   26
+#define evr27   27
+#define evr28   28
+#define evr29   29
+#define evr30   30
+#define evr31   31
+
+/* some stab codes */
+#define N_FUN   36
+#define N_RSYM  64
+#define N_SLINE 68
+#define N_SO    100
+
+#define ASM_CONST(x) x
+#else
+  #define __ASM_CONST(x) x##UL
+  #define ASM_CONST(x) __ASM_CONST(x)
+#endif /*  __ASSEMBLY__ */
+
+#endif /* _ASM_POWERPC_PPC_ASM_H */