diff options
Diffstat (limited to 'include/asm-powerpc/processor.h')
| -rw-r--r-- | include/asm-powerpc/processor.h | 28 |
1 files changed, 25 insertions, 3 deletions
diff --git a/include/asm-powerpc/processor.h b/include/asm-powerpc/processor.h index cf83f2d7e2a5..101ed87f7d84 100644 --- a/include/asm-powerpc/processor.h +++ b/include/asm-powerpc/processor.h @@ -12,6 +12,12 @@ #include <asm/reg.h> +#ifdef CONFIG_VSX +#define TS_FPRWIDTH 2 +#else +#define TS_FPRWIDTH 1 +#endif + #ifndef __ASSEMBLY__ #include <linux/compiler.h> #include <asm/ptrace.h> @@ -78,9 +84,14 @@ extern long kernel_thread(int (*fn)(void *), void *arg, unsigned long flags); /* Lazy FPU handling on uni-processor */ extern struct task_struct *last_task_used_math; extern struct task_struct *last_task_used_altivec; +extern struct task_struct *last_task_used_vsx; extern struct task_struct *last_task_used_spe; #ifdef CONFIG_PPC32 + +#if CONFIG_TASK_SIZE > CONFIG_KERNEL_START +#error User TASK_SIZE overlaps with KERNEL_START address +#endif #define TASK_SIZE (CONFIG_TASK_SIZE) /* This decides where the kernel will search for a free chunk of vm @@ -136,6 +147,10 @@ typedef struct { unsigned long seg; } mm_segment_t; +#define TS_FPROFFSET 0 +#define TS_VSRLOWOFFSET 1 +#define TS_FPR(i) fpr[i][TS_FPROFFSET] + struct thread_struct { unsigned long ksp; /* Kernel stack pointer */ unsigned long ksp_limit; /* if ksp <= ksp_limit stack overflow */ @@ -152,8 +167,9 @@ struct thread_struct { unsigned long dbcr0; /* debug control register values */ unsigned long dbcr1; #endif - double fpr[32]; /* Complete floating point set */ - struct { /* fpr ... fpscr must be contiguous */ + /* FP and VSX 0-31 register set */ + double fpr[32][TS_FPRWIDTH]; + struct { unsigned int pad; unsigned int val; /* Floating point status */ @@ -173,6 +189,10 @@ struct thread_struct { unsigned long vrsave; int used_vr; /* set if process has used altivec */ #endif /* CONFIG_ALTIVEC */ +#ifdef CONFIG_VSX + /* VSR status */ + int used_vsr; /* set if process has used altivec */ +#endif /* CONFIG_VSX */ #ifdef CONFIG_SPE unsigned long evr[32]; /* upper 32-bits of SPE regs */ u64 acc; /* Accumulator */ @@ -202,7 +222,7 @@ struct thread_struct { .ksp_limit = INIT_SP_LIMIT, \ .regs = (struct pt_regs *)INIT_SP - 1, /* XXX bogus, I think */ \ .fs = KERNEL_DS, \ - .fpr = {0}, \ + .fpr = {{0}}, \ .fpscr = { .val = 0, }, \ .fpexc_mode = 0, \ } @@ -214,6 +234,8 @@ struct thread_struct { #define thread_saved_pc(tsk) \ ((tsk)->thread.regs? (tsk)->thread.regs->nip: 0) +#define task_pt_regs(tsk) ((struct pt_regs *)(tsk)->thread.regs) + unsigned long get_wchan(struct task_struct *p); #define KSTK_EIP(tsk) ((tsk)->thread.regs? (tsk)->thread.regs->nip: 0) |