/*
* Copyright (C) 1995-1999 Gary Thomas, Paul Mackerras, Cort Dougan.
*/
-
#ifndef _ASM_POWERPC_PPC_ASM_H
#define _ASM_POWERPC_PPC_ASM_H
-#ifdef __ASSEMBLY__
+#include <linux/stringify.h>
+#include <asm/asm-compat.h>
+
+#ifndef __ASSEMBLY__
+#error __FILE__ should only be used in assembler files
+#else
+
+#define SZL (BITS_PER_LONG/8)
+
+/*
+ * Stuff for accurate CPU time accounting.
+ * These macros handle transitions between user and system state
+ * in exception entry and exit and accumulate time to the
+ * user_time and system_time fields in the paca.
+ */
+
+#ifndef CONFIG_VIRT_CPU_ACCOUNTING
+#define ACCOUNT_CPU_USER_ENTRY(ra, rb)
+#define ACCOUNT_CPU_USER_EXIT(ra, rb)
+#else
+#define ACCOUNT_CPU_USER_ENTRY(ra, rb) \
+ beq 2f; /* if from kernel mode */ \
+BEGIN_FTR_SECTION; \
+ mfspr ra,SPRN_PURR; /* get processor util. reg */ \
+END_FTR_SECTION_IFSET(CPU_FTR_PURR); \
+BEGIN_FTR_SECTION; \
+ MFTB(ra); /* or get TB if no PURR */ \
+END_FTR_SECTION_IFCLR(CPU_FTR_PURR); \
+ ld rb,PACA_STARTPURR(r13); \
+ std ra,PACA_STARTPURR(r13); \
+ subf rb,rb,ra; /* subtract start value */ \
+ ld ra,PACA_USER_TIME(r13); \
+ add ra,ra,rb; /* add on to user time */ \
+ std ra,PACA_USER_TIME(r13); \
+2:
+
+#define ACCOUNT_CPU_USER_EXIT(ra, rb) \
+BEGIN_FTR_SECTION; \
+ mfspr ra,SPRN_PURR; /* get processor util. reg */ \
+END_FTR_SECTION_IFSET(CPU_FTR_PURR); \
+BEGIN_FTR_SECTION; \
+ MFTB(ra); /* or get TB if no PURR */ \
+END_FTR_SECTION_IFCLR(CPU_FTR_PURR); \
+ ld rb,PACA_STARTPURR(r13); \
+ std ra,PACA_STARTPURR(r13); \
+ subf rb,rb,ra; /* subtract start value */ \
+ ld ra,PACA_SYSTEM_TIME(r13); \
+ add ra,ra,rb; /* add on to user time */ \
+ std ra,PACA_SYSTEM_TIME(r13);
+#endif
/*
* Macros for storing registers into and loading registers from
#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_VERY_LOW or 31,31,31 # very low priority\n"
-#define HMT_LOW or 1,1,1
-#define HMT_MEDIUM_LOW or 6,6,6 # medium low priority\n"
-#define HMT_MEDIUM or 2,2,2
-#define HMT_MEDIUM_HIGH or 5,5,5 # medium high priority\n"
-#define HMT_HIGH or 3,3,3
+/* Macros to adjust thread priority for hardware multithreading */
+#define HMT_VERY_LOW or 31,31,31 # very low priority
+#define HMT_LOW or 1,1,1
+#define HMT_MEDIUM_LOW or 6,6,6 # medium low priority
+#define HMT_MEDIUM or 2,2,2
+#define HMT_MEDIUM_HIGH or 5,5,5 # medium high priority
+#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 */
+#ifdef __KERNEL__
+#ifdef CONFIG_PPC64
+
+#define XGLUE(a,b) a##b
+#define GLUE(a,b) XGLUE(a,b)
+
+#define _GLOBAL(name) \
+ .section ".text"; \
+ .align 2 ; \
+ .globl name; \
+ .globl GLUE(.,name); \
+ .section ".opd","aw"; \
+name: \
+ .quad GLUE(.,name); \
+ .quad .TOC.@tocbase; \
+ .quad 0; \
+ .previous; \
+ .type GLUE(.,name),@function; \
+GLUE(.,name):
+
+#define _KPROBE(name) \
+ .section ".kprobes.text","a"; \
+ .align 2 ; \
+ .globl name; \
+ .globl GLUE(.,name); \
+ .section ".opd","aw"; \
+name: \
+ .quad GLUE(.,name); \
+ .quad .TOC.@tocbase; \
+ .quad 0; \
+ .previous; \
+ .type GLUE(.,name),@function; \
+GLUE(.,name):
+
+#define _STATIC(name) \
+ .section ".text"; \
+ .align 2 ; \
+ .section ".opd","aw"; \
+name: \
+ .quad GLUE(.,name); \
+ .quad .TOC.@tocbase; \
+ .quad 0; \
+ .previous; \
+ .type GLUE(.,name),@function; \
+GLUE(.,name):
+
+#else /* 32-bit */
+
+#define _GLOBAL(n) \
+ .text; \
+ .stabs __stringify(n:F-1),N_FUN,0,0,n;\
+ .globl n; \
+n:
+
+#define _KPROBE(n) \
+ .section ".kprobes.text","a"; \
+ .globl n; \
+n:
+
+#endif
+
/*
- * LOADADDR( rn, name )
- * loads the address of 'name' into 'rn'
+ * LOAD_REG_IMMEDIATE(rn, expr)
+ * Loads the value of the constant expression 'expr' into register 'rn'
+ * using immediate instructions only. Use this when it's important not
+ * to reference other data (i.e. on ppc64 when the TOC pointer is not
+ * valid).
*
- * LOADBASE( rn, name )
- * loads the address (less the low 16 bits) of 'name' into 'rn'
- * suitable for base+disp addressing
+ * LOAD_REG_ADDR(rn, name)
+ * Loads the address of label 'name' into register 'rn'. Use this when
+ * you don't particularly need immediate instructions only, but you need
+ * the whole address in one register (e.g. it's a structure address and
+ * you want to access various offsets within it). On ppc32 this is
+ * identical to LOAD_REG_IMMEDIATE.
+ *
+ * LOAD_REG_ADDRBASE(rn, name)
+ * ADDROFF(name)
+ * LOAD_REG_ADDRBASE loads part of the address of label 'name' into
+ * register 'rn'. ADDROFF(name) returns the remainder of the address as
+ * a constant expression. ADDROFF(name) is a signed expression < 16 bits
+ * in size, so is suitable for use directly as an offset in load and store
+ * instructions. Use this when loading/storing a single word or less as:
+ * LOAD_REG_ADDRBASE(rX, name)
+ * ld rY,ADDROFF(name)(rX)
*/
#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;
+#define LOAD_REG_IMMEDIATE(reg,expr) \
+ lis (reg),(expr)@highest; \
+ ori (reg),(reg),(expr)@higher; \
+ rldicr (reg),(reg),32,31; \
+ oris (reg),(reg),(expr)@h; \
+ ori (reg),(reg),(expr)@l;
+
+#define LOAD_REG_ADDR(reg,name) \
+ ld (reg),name@got(r2)
+
+#define LOAD_REG_ADDRBASE(reg,name) LOAD_REG_ADDR(reg,name)
+#define ADDROFF(name) 0
+
+/* offsets for stack frame layout */
+#define LRSAVE 16
+
+#else /* 32-bit */
+
+#define LOAD_REG_IMMEDIATE(reg,expr) \
+ lis (reg),(expr)@ha; \
+ addi (reg),(reg),(expr)@l;
+
+#define LOAD_REG_ADDR(reg,name) LOAD_REG_IMMEDIATE(reg, name)
+
+#define LOAD_REG_ADDRBASE(reg, name) lis (reg),name@ha
+#define ADDROFF(name) name@l
+
+/* offsets for stack frame layout */
+#define LRSAVE 4
+
#endif
/* various errata or part fixups */
#define ISYNC_601
#endif
+#ifdef CONFIG_PPC_CELL
+#define MFTB(dest) \
+90: mftb dest; \
+BEGIN_FTR_SECTION_NESTED(96); \
+ cmpwi dest,0; \
+ beq- 90b; \
+END_FTR_SECTION_NESTED(CPU_FTR_CELL_TB_BUG, CPU_FTR_CELL_TB_BUG, 96)
+#else
+#define MFTB(dest) mftb dest
+#endif
#ifndef CONFIG_SMP
#define TLBSYNC
#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
#if defined(CONFIG_BOOKE)
+#define toreal(rd)
+#define fromreal(rd)
+
#define tophys(rd,rs) \
addis rd,rs,0
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 toreal(rd) /* we can access c000... in real mode */
+#define fromreal(rd)
+
#define tophys(rd,rs) \
- lis rd,((KERNELBASE>>48)&0xFFFF); \
- rldicr rd,rd,32,31; \
- sub rd,rs,rd
+ clrldi rd,rs,2
#define tovirt(rd,rs) \
- lis rd,((KERNELBASE>>48)&0xFFFF); \
- rldicr rd,rd,32,31; \
- add rd,rs,rd
+ rotldi rd,rs,16; \
+ ori rd,rd,((KERNELBASE>>48)&0xFFFF);\
+ rotldi rd,rd,48
#else
/*
* On APUS (Amiga PowerPC cpu upgrade board), we don't know the
* physical base address of RAM at compile time.
*/
+#define toreal(rd) tophys(rd,rd)
+#define fromreal(rd) tovirt(rd,rd)
+
#define tophys(rd,rs) \
0: addis rd,rs,-KERNELBASE@h; \
.section ".vtop_fixup","aw"; \
.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 */
+#ifdef CONFIG_PPC64
+#define RFI rfid
+#define MTMSRD(r) mtmsrd r
#else
#define FIX_SRR1(ra, rb)
#define CLR_TOP32(r)
#endif
+#endif /* __KERNEL__ */
+
/* The boring bits... */
/* Condition Register Bit Fields */
#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 */
projects / linux-2.6-omap-h63xx.git / blobdiff