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-rw-r--r--arch/parisc/include/asm/assembly.h519
1 files changed, 519 insertions, 0 deletions
diff --git a/arch/parisc/include/asm/assembly.h b/arch/parisc/include/asm/assembly.h
new file mode 100644
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+++ b/arch/parisc/include/asm/assembly.h
@@ -0,0 +1,519 @@
+/*
+ * Copyright (C) 1999 Hewlett-Packard (Frank Rowand)
+ * Copyright (C) 1999 Philipp Rumpf <prumpf@tux.org>
+ * Copyright (C) 1999 SuSE GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef _PARISC_ASSEMBLY_H
+#define _PARISC_ASSEMBLY_H
+
+#define CALLEE_FLOAT_FRAME_SIZE 80
+
+#ifdef CONFIG_64BIT
+#define LDREG ldd
+#define STREG std
+#define LDREGX ldd,s
+#define LDREGM ldd,mb
+#define STREGM std,ma
+#define SHRREG shrd
+#define SHLREG shld
+#define ANDCM andcm,*
+#define COND(x) * ## x
+#define RP_OFFSET 16
+#define FRAME_SIZE 128
+#define CALLEE_REG_FRAME_SIZE 144
+#define ASM_ULONG_INSN .dword
+#else /* CONFIG_64BIT */
+#define LDREG ldw
+#define STREG stw
+#define LDREGX ldwx,s
+#define LDREGM ldwm
+#define STREGM stwm
+#define SHRREG shr
+#define SHLREG shlw
+#define ANDCM andcm
+#define COND(x) x
+#define RP_OFFSET 20
+#define FRAME_SIZE 64
+#define CALLEE_REG_FRAME_SIZE 128
+#define ASM_ULONG_INSN .word
+#endif
+
+#define CALLEE_SAVE_FRAME_SIZE (CALLEE_REG_FRAME_SIZE + CALLEE_FLOAT_FRAME_SIZE)
+
+#ifdef CONFIG_PA20
+#define LDCW ldcw,co
+#define BL b,l
+# ifdef CONFIG_64BIT
+# define LEVEL 2.0w
+# else
+# define LEVEL 2.0
+# endif
+#else
+#define LDCW ldcw
+#define BL bl
+#define LEVEL 1.1
+#endif
+
+#ifdef __ASSEMBLY__
+
+#ifdef CONFIG_64BIT
+/* the 64-bit pa gnu assembler unfortunately defaults to .level 1.1 or 2.0 so
+ * work around that for now... */
+ .level 2.0w
+#endif
+
+#include <asm/asm-offsets.h>
+#include <asm/page.h>
+
+#include <asm/asmregs.h>
+
+ sp = 30
+ gp = 27
+ ipsw = 22
+
+ /*
+ * We provide two versions of each macro to convert from physical
+ * to virtual and vice versa. The "_r1" versions take one argument
+ * register, but trashes r1 to do the conversion. The other
+ * version takes two arguments: a src and destination register.
+ * However, the source and destination registers can not be
+ * the same register.
+ */
+
+ .macro tophys grvirt, grphys
+ ldil L%(__PAGE_OFFSET), \grphys
+ sub \grvirt, \grphys, \grphys
+ .endm
+
+ .macro tovirt grphys, grvirt
+ ldil L%(__PAGE_OFFSET), \grvirt
+ add \grphys, \grvirt, \grvirt
+ .endm
+
+ .macro tophys_r1 gr
+ ldil L%(__PAGE_OFFSET), %r1
+ sub \gr, %r1, \gr
+ .endm
+
+ .macro tovirt_r1 gr
+ ldil L%(__PAGE_OFFSET), %r1
+ add \gr, %r1, \gr
+ .endm
+
+ .macro delay value
+ ldil L%\value, 1
+ ldo R%\value(1), 1
+ addib,UV,n -1,1,.
+ addib,NUV,n -1,1,.+8
+ nop
+ .endm
+
+ .macro debug value
+ .endm
+
+
+ /* Shift Left - note the r and t can NOT be the same! */
+ .macro shl r, sa, t
+ dep,z \r, 31-\sa, 32-\sa, \t
+ .endm
+
+ /* The PA 2.0 shift left */
+ .macro shlw r, sa, t
+ depw,z \r, 31-\sa, 32-\sa, \t
+ .endm
+
+ /* And the PA 2.0W shift left */
+ .macro shld r, sa, t
+ depd,z \r, 63-\sa, 64-\sa, \t
+ .endm
+
+ /* Shift Right - note the r and t can NOT be the same! */
+ .macro shr r, sa, t
+ extru \r, 31-\sa, 32-\sa, \t
+ .endm
+
+ /* pa20w version of shift right */
+ .macro shrd r, sa, t
+ extrd,u \r, 63-\sa, 64-\sa, \t
+ .endm
+
+ /* load 32-bit 'value' into 'reg' compensating for the ldil
+ * sign-extension when running in wide mode.
+ * WARNING!! neither 'value' nor 'reg' can be expressions
+ * containing '.'!!!! */
+ .macro load32 value, reg
+ ldil L%\value, \reg
+ ldo R%\value(\reg), \reg
+ .endm
+
+ .macro loadgp
+#ifdef CONFIG_64BIT
+ ldil L%__gp, %r27
+ ldo R%__gp(%r27), %r27
+#else
+ ldil L%$global$, %r27
+ ldo R%$global$(%r27), %r27
+#endif
+ .endm
+
+#define SAVE_SP(r, where) mfsp r, %r1 ! STREG %r1, where
+#define REST_SP(r, where) LDREG where, %r1 ! mtsp %r1, r
+#define SAVE_CR(r, where) mfctl r, %r1 ! STREG %r1, where
+#define REST_CR(r, where) LDREG where, %r1 ! mtctl %r1, r
+
+ .macro save_general regs
+ STREG %r1, PT_GR1 (\regs)
+ STREG %r2, PT_GR2 (\regs)
+ STREG %r3, PT_GR3 (\regs)
+ STREG %r4, PT_GR4 (\regs)
+ STREG %r5, PT_GR5 (\regs)
+ STREG %r6, PT_GR6 (\regs)
+ STREG %r7, PT_GR7 (\regs)
+ STREG %r8, PT_GR8 (\regs)
+ STREG %r9, PT_GR9 (\regs)
+ STREG %r10, PT_GR10(\regs)
+ STREG %r11, PT_GR11(\regs)
+ STREG %r12, PT_GR12(\regs)
+ STREG %r13, PT_GR13(\regs)
+ STREG %r14, PT_GR14(\regs)
+ STREG %r15, PT_GR15(\regs)
+ STREG %r16, PT_GR16(\regs)
+ STREG %r17, PT_GR17(\regs)
+ STREG %r18, PT_GR18(\regs)
+ STREG %r19, PT_GR19(\regs)
+ STREG %r20, PT_GR20(\regs)
+ STREG %r21, PT_GR21(\regs)
+ STREG %r22, PT_GR22(\regs)
+ STREG %r23, PT_GR23(\regs)
+ STREG %r24, PT_GR24(\regs)
+ STREG %r25, PT_GR25(\regs)
+ /* r26 is saved in get_stack and used to preserve a value across virt_map */
+ STREG %r27, PT_GR27(\regs)
+ STREG %r28, PT_GR28(\regs)
+ /* r29 is saved in get_stack and used to point to saved registers */
+ /* r30 stack pointer saved in get_stack */
+ STREG %r31, PT_GR31(\regs)
+ .endm
+
+ .macro rest_general regs
+ /* r1 used as a temp in rest_stack and is restored there */
+ LDREG PT_GR2 (\regs), %r2
+ LDREG PT_GR3 (\regs), %r3
+ LDREG PT_GR4 (\regs), %r4
+ LDREG PT_GR5 (\regs), %r5
+ LDREG PT_GR6 (\regs), %r6
+ LDREG PT_GR7 (\regs), %r7
+ LDREG PT_GR8 (\regs), %r8
+ LDREG PT_GR9 (\regs), %r9
+ LDREG PT_GR10(\regs), %r10
+ LDREG PT_GR11(\regs), %r11
+ LDREG PT_GR12(\regs), %r12
+ LDREG PT_GR13(\regs), %r13
+ LDREG PT_GR14(\regs), %r14
+ LDREG PT_GR15(\regs), %r15
+ LDREG PT_GR16(\regs), %r16
+ LDREG PT_GR17(\regs), %r17
+ LDREG PT_GR18(\regs), %r18
+ LDREG PT_GR19(\regs), %r19
+ LDREG PT_GR20(\regs), %r20
+ LDREG PT_GR21(\regs), %r21
+ LDREG PT_GR22(\regs), %r22
+ LDREG PT_GR23(\regs), %r23
+ LDREG PT_GR24(\regs), %r24
+ LDREG PT_GR25(\regs), %r25
+ LDREG PT_GR26(\regs), %r26
+ LDREG PT_GR27(\regs), %r27
+ LDREG PT_GR28(\regs), %r28
+ /* r29 points to register save area, and is restored in rest_stack */
+ /* r30 stack pointer restored in rest_stack */
+ LDREG PT_GR31(\regs), %r31
+ .endm
+
+ .macro save_fp regs
+ fstd,ma %fr0, 8(\regs)
+ fstd,ma %fr1, 8(\regs)
+ fstd,ma %fr2, 8(\regs)
+ fstd,ma %fr3, 8(\regs)
+ fstd,ma %fr4, 8(\regs)
+ fstd,ma %fr5, 8(\regs)
+ fstd,ma %fr6, 8(\regs)
+ fstd,ma %fr7, 8(\regs)
+ fstd,ma %fr8, 8(\regs)
+ fstd,ma %fr9, 8(\regs)
+ fstd,ma %fr10, 8(\regs)
+ fstd,ma %fr11, 8(\regs)
+ fstd,ma %fr12, 8(\regs)
+ fstd,ma %fr13, 8(\regs)
+ fstd,ma %fr14, 8(\regs)
+ fstd,ma %fr15, 8(\regs)
+ fstd,ma %fr16, 8(\regs)
+ fstd,ma %fr17, 8(\regs)
+ fstd,ma %fr18, 8(\regs)
+ fstd,ma %fr19, 8(\regs)
+ fstd,ma %fr20, 8(\regs)
+ fstd,ma %fr21, 8(\regs)
+ fstd,ma %fr22, 8(\regs)
+ fstd,ma %fr23, 8(\regs)
+ fstd,ma %fr24, 8(\regs)
+ fstd,ma %fr25, 8(\regs)
+ fstd,ma %fr26, 8(\regs)
+ fstd,ma %fr27, 8(\regs)
+ fstd,ma %fr28, 8(\regs)
+ fstd,ma %fr29, 8(\regs)
+ fstd,ma %fr30, 8(\regs)
+ fstd %fr31, 0(\regs)
+ .endm
+
+ .macro rest_fp regs
+ fldd 0(\regs), %fr31
+ fldd,mb -8(\regs), %fr30
+ fldd,mb -8(\regs), %fr29
+ fldd,mb -8(\regs), %fr28
+ fldd,mb -8(\regs), %fr27
+ fldd,mb -8(\regs), %fr26
+ fldd,mb -8(\regs), %fr25
+ fldd,mb -8(\regs), %fr24
+ fldd,mb -8(\regs), %fr23
+ fldd,mb -8(\regs), %fr22
+ fldd,mb -8(\regs), %fr21
+ fldd,mb -8(\regs), %fr20
+ fldd,mb -8(\regs), %fr19
+ fldd,mb -8(\regs), %fr18
+ fldd,mb -8(\regs), %fr17
+ fldd,mb -8(\regs), %fr16
+ fldd,mb -8(\regs), %fr15
+ fldd,mb -8(\regs), %fr14
+ fldd,mb -8(\regs), %fr13
+ fldd,mb -8(\regs), %fr12
+ fldd,mb -8(\regs), %fr11
+ fldd,mb -8(\regs), %fr10
+ fldd,mb -8(\regs), %fr9
+ fldd,mb -8(\regs), %fr8
+ fldd,mb -8(\regs), %fr7
+ fldd,mb -8(\regs), %fr6
+ fldd,mb -8(\regs), %fr5
+ fldd,mb -8(\regs), %fr4
+ fldd,mb -8(\regs), %fr3
+ fldd,mb -8(\regs), %fr2
+ fldd,mb -8(\regs), %fr1
+ fldd,mb -8(\regs), %fr0
+ .endm
+
+ .macro callee_save_float
+ fstd,ma %fr12, 8(%r30)
+ fstd,ma %fr13, 8(%r30)
+ fstd,ma %fr14, 8(%r30)
+ fstd,ma %fr15, 8(%r30)
+ fstd,ma %fr16, 8(%r30)
+ fstd,ma %fr17, 8(%r30)
+ fstd,ma %fr18, 8(%r30)
+ fstd,ma %fr19, 8(%r30)
+ fstd,ma %fr20, 8(%r30)
+ fstd,ma %fr21, 8(%r30)
+ .endm
+
+ .macro callee_rest_float
+ fldd,mb -8(%r30), %fr21
+ fldd,mb -8(%r30), %fr20
+ fldd,mb -8(%r30), %fr19
+ fldd,mb -8(%r30), %fr18
+ fldd,mb -8(%r30), %fr17
+ fldd,mb -8(%r30), %fr16
+ fldd,mb -8(%r30), %fr15
+ fldd,mb -8(%r30), %fr14
+ fldd,mb -8(%r30), %fr13
+ fldd,mb -8(%r30), %fr12
+ .endm
+
+#ifdef CONFIG_64BIT
+ .macro callee_save
+ std,ma %r3, CALLEE_REG_FRAME_SIZE(%r30)
+ mfctl %cr27, %r3
+ std %r4, -136(%r30)
+ std %r5, -128(%r30)
+ std %r6, -120(%r30)
+ std %r7, -112(%r30)
+ std %r8, -104(%r30)
+ std %r9, -96(%r30)
+ std %r10, -88(%r30)
+ std %r11, -80(%r30)
+ std %r12, -72(%r30)
+ std %r13, -64(%r30)
+ std %r14, -56(%r30)
+ std %r15, -48(%r30)
+ std %r16, -40(%r30)
+ std %r17, -32(%r30)
+ std %r18, -24(%r30)
+ std %r3, -16(%r30)
+ .endm
+
+ .macro callee_rest
+ ldd -16(%r30), %r3
+ ldd -24(%r30), %r18
+ ldd -32(%r30), %r17
+ ldd -40(%r30), %r16
+ ldd -48(%r30), %r15
+ ldd -56(%r30), %r14
+ ldd -64(%r30), %r13
+ ldd -72(%r30), %r12
+ ldd -80(%r30), %r11
+ ldd -88(%r30), %r10
+ ldd -96(%r30), %r9
+ ldd -104(%r30), %r8
+ ldd -112(%r30), %r7
+ ldd -120(%r30), %r6
+ ldd -128(%r30), %r5
+ ldd -136(%r30), %r4
+ mtctl %r3, %cr27
+ ldd,mb -CALLEE_REG_FRAME_SIZE(%r30), %r3
+ .endm
+
+#else /* ! CONFIG_64BIT */
+
+ .macro callee_save
+ stw,ma %r3, CALLEE_REG_FRAME_SIZE(%r30)
+ mfctl %cr27, %r3
+ stw %r4, -124(%r30)
+ stw %r5, -120(%r30)
+ stw %r6, -116(%r30)
+ stw %r7, -112(%r30)
+ stw %r8, -108(%r30)
+ stw %r9, -104(%r30)
+ stw %r10, -100(%r30)
+ stw %r11, -96(%r30)
+ stw %r12, -92(%r30)
+ stw %r13, -88(%r30)
+ stw %r14, -84(%r30)
+ stw %r15, -80(%r30)
+ stw %r16, -76(%r30)
+ stw %r17, -72(%r30)
+ stw %r18, -68(%r30)
+ stw %r3, -64(%r30)
+ .endm
+
+ .macro callee_rest
+ ldw -64(%r30), %r3
+ ldw -68(%r30), %r18
+ ldw -72(%r30), %r17
+ ldw -76(%r30), %r16
+ ldw -80(%r30), %r15
+ ldw -84(%r30), %r14
+ ldw -88(%r30), %r13
+ ldw -92(%r30), %r12
+ ldw -96(%r30), %r11
+ ldw -100(%r30), %r10
+ ldw -104(%r30), %r9
+ ldw -108(%r30), %r8
+ ldw -112(%r30), %r7
+ ldw -116(%r30), %r6
+ ldw -120(%r30), %r5
+ ldw -124(%r30), %r4
+ mtctl %r3, %cr27
+ ldw,mb -CALLEE_REG_FRAME_SIZE(%r30), %r3
+ .endm
+#endif /* ! CONFIG_64BIT */
+
+ .macro save_specials regs
+
+ SAVE_SP (%sr0, PT_SR0 (\regs))
+ SAVE_SP (%sr1, PT_SR1 (\regs))
+ SAVE_SP (%sr2, PT_SR2 (\regs))
+ SAVE_SP (%sr3, PT_SR3 (\regs))
+ SAVE_SP (%sr4, PT_SR4 (\regs))
+ SAVE_SP (%sr5, PT_SR5 (\regs))
+ SAVE_SP (%sr6, PT_SR6 (\regs))
+ SAVE_SP (%sr7, PT_SR7 (\regs))
+
+ SAVE_CR (%cr17, PT_IASQ0(\regs))
+ mtctl %r0, %cr17
+ SAVE_CR (%cr17, PT_IASQ1(\regs))
+
+ SAVE_CR (%cr18, PT_IAOQ0(\regs))
+ mtctl %r0, %cr18
+ SAVE_CR (%cr18, PT_IAOQ1(\regs))
+
+#ifdef CONFIG_64BIT
+ /* cr11 (sar) is a funny one. 5 bits on PA1.1 and 6 bit on PA2.0
+ * For PA2.0 mtsar or mtctl always write 6 bits, but mfctl only
+ * reads 5 bits. Use mfctl,w to read all six bits. Otherwise
+ * we lose the 6th bit on a save/restore over interrupt.
+ */
+ mfctl,w %cr11, %r1
+ STREG %r1, PT_SAR (\regs)
+#else
+ SAVE_CR (%cr11, PT_SAR (\regs))
+#endif
+ SAVE_CR (%cr19, PT_IIR (\regs))
+
+ /*
+ * Code immediately following this macro (in intr_save) relies
+ * on r8 containing ipsw.
+ */
+ mfctl %cr22, %r8
+ STREG %r8, PT_PSW(\regs)
+ .endm
+
+ .macro rest_specials regs
+
+ REST_SP (%sr0, PT_SR0 (\regs))
+ REST_SP (%sr1, PT_SR1 (\regs))
+ REST_SP (%sr2, PT_SR2 (\regs))
+ REST_SP (%sr3, PT_SR3 (\regs))
+ REST_SP (%sr4, PT_SR4 (\regs))
+ REST_SP (%sr5, PT_SR5 (\regs))
+ REST_SP (%sr6, PT_SR6 (\regs))
+ REST_SP (%sr7, PT_SR7 (\regs))
+
+ REST_CR (%cr17, PT_IASQ0(\regs))
+ REST_CR (%cr17, PT_IASQ1(\regs))
+
+ REST_CR (%cr18, PT_IAOQ0(\regs))
+ REST_CR (%cr18, PT_IAOQ1(\regs))
+
+ REST_CR (%cr11, PT_SAR (\regs))
+
+ REST_CR (%cr22, PT_PSW (\regs))
+ .endm
+
+
+ /* First step to create a "relied upon translation"
+ * See PA 2.0 Arch. page F-4 and F-5.
+ *
+ * The ssm was originally necessary due to a "PCxT bug".
+ * But someone decided it needed to be added to the architecture
+ * and this "feature" went into rev3 of PA-RISC 1.1 Arch Manual.
+ * It's been carried forward into PA 2.0 Arch as well. :^(
+ *
+ * "ssm 0,%r0" is a NOP with side effects (prefetch barrier).
+ * rsm/ssm prevents the ifetch unit from speculatively fetching
+ * instructions past this line in the code stream.
+ * PA 2.0 processor will single step all insn in the same QUAD (4 insn).
+ */
+ .macro pcxt_ssm_bug
+ rsm PSW_SM_I,%r0
+ nop /* 1 */
+ nop /* 2 */
+ nop /* 3 */
+ nop /* 4 */
+ nop /* 5 */
+ nop /* 6 */
+ nop /* 7 */
+ .endm
+
+#endif /* __ASSEMBLY__ */
+#endif
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