diff options
Diffstat (limited to 'arch/parisc/include/asm/assembly.h')
| -rw-r--r-- | arch/parisc/include/asm/assembly.h | 46 |
1 files changed, 31 insertions, 15 deletions
diff --git a/arch/parisc/include/asm/assembly.h b/arch/parisc/include/asm/assembly.h index 6369082c6c74..c20261604f09 100644 --- a/arch/parisc/include/asm/assembly.h +++ b/arch/parisc/include/asm/assembly.h @@ -47,7 +47,13 @@ #define PRIV_USER 3 #define PRIV_KERNEL 0 -#ifdef __ASSEMBLY__ +/* Space register used inside kernel */ +#define SR_KERNEL 0 +#define SR_TEMP1 1 +#define SR_TEMP2 2 +#define SR_USER 3 + +#ifdef __ASSEMBLER__ #ifdef CONFIG_64BIT #define LDREG ldd @@ -84,10 +90,6 @@ #include <asm/asmregs.h> #include <asm/psw.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 @@ -95,26 +97,28 @@ * version takes two arguments: a src and destination register. * However, the source and destination registers can not be * the same register. + * + * We use add,l to avoid clobbering the C/B bits in the PSW. */ .macro tophys grvirt, grphys - ldil L%(__PAGE_OFFSET), \grphys - sub \grvirt, \grphys, \grphys + ldil L%(-__PAGE_OFFSET), \grphys + addl \grvirt, \grphys, \grphys .endm - + .macro tovirt grphys, grvirt ldil L%(__PAGE_OFFSET), \grvirt - add \grphys, \grvirt, \grvirt + addl \grphys, \grvirt, \grvirt .endm .macro tophys_r1 gr - ldil L%(__PAGE_OFFSET), %r1 - sub \gr, %r1, \gr + ldil L%(-__PAGE_OFFSET), %r1 + addl \gr, %r1, \gr .endm - + .macro tovirt_r1 gr ldil L%(__PAGE_OFFSET), %r1 - add \gr, %r1, \gr + addl \gr, %r1, \gr .endm .macro delay value @@ -137,7 +141,7 @@ depd,z \r, 63-(\sa), 64-(\sa), \t .endm - /* Shift Right - note the r and t can NOT be the same! */ + /* Shift Right for 32-bit. Clobbers upper 32-bit on PA2.0. */ .macro shr r, sa, t extru \r, 31-(\sa), 32-(\sa), \t .endm @@ -168,6 +172,16 @@ #endif .endm + /* The depw instruction leaves the most significant 32 bits of the + * target register in an undefined state on PA 2.0 systems. */ + .macro dep_safe i, p, len, t +#ifdef CONFIG_64BIT + depd \i, 32+(\p), \len, \t +#else + depw \i, \p, \len, \t +#endif + .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 @@ -562,9 +576,11 @@ */ #define ASM_EXCEPTIONTABLE_ENTRY(fault_addr, except_addr) \ .section __ex_table,"aw" ! \ + .align 4 ! \ .word (fault_addr - .), (except_addr - .) ! \ + or %r0,%r0,%r0 ! \ .previous -#endif /* __ASSEMBLY__ */ +#endif /* __ASSEMBLER__ */ #endif |