diff options
Diffstat (limited to 'libc/sysdeps/linux/powerpc/sys/ucontext.h')
| -rw-r--r-- | libc/sysdeps/linux/powerpc/sys/ucontext.h | 78 |
1 files changed, 0 insertions, 78 deletions
diff --git a/libc/sysdeps/linux/powerpc/sys/ucontext.h b/libc/sysdeps/linux/powerpc/sys/ucontext.h index 72fbae4f2..fa3cbb68d 100644 --- a/libc/sysdeps/linux/powerpc/sys/ucontext.h +++ b/libc/sysdeps/linux/powerpc/sys/ucontext.h @@ -25,8 +25,6 @@ included in <signal.h>. */ #include <bits/sigcontext.h> -#if __WORDSIZE == 32 - /* Number of general registers. */ # define NGREG 48 @@ -59,84 +57,12 @@ typedef struct vrregset_t vrregs __attribute__((__aligned__(16))); } mcontext_t; -#else - -/* For 64-bit kernels with Altivec support, a machine context is exactly - * a sigcontext. For older kernel (without Altivec) the sigcontext matches - * the mcontext upto but not including the v_regs field. For kernels that - * don't AT_HWCAP or return AT_HWCAP without PPC_FEATURE_HAS_ALTIVEC the - * v_regs field may not exit and should not be referenced. The v_regd field - * can be refernced safely only after verifying that PPC_FEATURE_HAS_ALTIVEC - * is set in AT_HWCAP. */ - -/* Number of general registers. */ -# define NGREG 48 /* includes r0-r31, nip, msr, lr, etc. */ -# define NFPREG 33 /* includes fp0-fp31 &fpscr. */ -# define NVRREG 34 /* includes v0-v31, vscr, & vrsave in split vectors */ - -typedef unsigned long gregset_t[NGREG]; -typedef double fpregset_t[NFPREG]; - -/* Container for Altivec/VMX Vector Status and Control Register. Only 32-bits - but can only be copied to/from a 128-bit vector register. So we allocated - a whole quadword speedup save/restore. */ -typedef struct _libc_vscr -{ - unsigned int __pad[3]; - unsigned int vscr_word; -} vscr_t; - -/* Container for Altivec/VMX registers and status. - Must to be aligned on a 16-byte boundary. */ -typedef struct _libc_vrstate -{ - unsigned int vrregs[32][4]; - vscr_t vscr; - unsigned int vrsave; - unsigned int __pad[3]; -} vrregset_t __attribute__((__aligned__(16))); - -typedef struct { - unsigned long __unused[4]; - int signal; - int __pad0; - unsigned long handler; - unsigned long oldmask; - struct pt_regs *regs; - gregset_t gp_regs; - fpregset_t fp_regs; -/* - * To maintain compatibility with current implementations the sigcontext is - * extended by appending a pointer (v_regs) to a quadword type (elf_vrreg_t) - * followed by an unstructured (vmx_reserve) field of 69 doublewords. This - * allows the array of vector registers to be quadword aligned independent of - * the alignment of the containing sigcontext or ucontext. It is the - * responsibility of the code setting the sigcontext to set this pointer to - * either NULL (if this processor does not support the VMX feature) or the - * address of the first quadword within the allocated (vmx_reserve) area. - * - * The pointer (v_regs) of vector type (elf_vrreg_t) is essentually - * an array of 34 quadword entries. The entries with - * indexes 0-31 contain the corresponding vector registers. The entry with - * index 32 contains the vscr as the last word (offset 12) within the - * quadword. This allows the vscr to be stored as either a quadword (since - * it must be copied via a vector register to/from storage) or as a word. - * The entry with index 33 contains the vrsave as the first word (offset 0) - * within the quadword. - */ - vrregset_t *v_regs; - long vmx_reserve[NVRREG+NVRREG+1]; -} mcontext_t; - -#endif - /* Userlevel context. */ typedef struct ucontext { unsigned long int uc_flags; struct ucontext *uc_link; stack_t uc_stack; -#if __WORDSIZE == 32 /* * These fields are set up this way to maximize source and * binary compatibility with code written for the old @@ -167,10 +93,6 @@ typedef struct ucontext } uc_mcontext; sigset_t uc_sigmask; char uc_reg_space[sizeof(mcontext_t) + 12]; /* last for extensibility */ -#else /* 64-bit */ - sigset_t uc_sigmask; - mcontext_t uc_mcontext; /* last for extensibility */ -#endif } ucontext_t; #endif /* sys/ucontext.h */ |