/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ #ifndef _ASM_POWERPC_SIGCONTEXT_H #define _ASM_POWERPC_SIGCONTEXT_H /* * 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 of the License, or (at your option) any later version. */ #include <linux/compiler.h> #include <asm/ptrace.h> #ifdef __powerpc64__ #include <asm/elf.h> #endif struct sigcontext { unsigned long _unused[4]; int signal; #ifdef __powerpc64__ int _pad0; #endif unsigned long handler; unsigned long oldmask; struct pt_regs __user *regs; #ifdef __powerpc64__ elf_gregset_t gp_regs; elf_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 101 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 type compatible with * an array of 34 quadword entries (elf_vrregset_t). 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. * * Part of the VSX data is stored here also by extending vmx_restore * by an additional 32 double words. Architecturally the layout of * the VSR registers and how they overlap on top of the legacy FPR and * VR registers is shown below: * * VSR doubleword 0 VSR doubleword 1 * ---------------------------------------------------------------- * VSR[0] | FPR[0] | | * ---------------------------------------------------------------- * VSR[1] | FPR[1] | | * ---------------------------------------------------------------- * | ... | | * | ... | | * ---------------------------------------------------------------- * VSR[30] | FPR[30] | | * ---------------------------------------------------------------- * VSR[31] | FPR[31] | | * ---------------------------------------------------------------- * VSR[32] | VR[0] | * ---------------------------------------------------------------- * VSR[33] | VR[1] | * ---------------------------------------------------------------- * | ... | * | ... | * ---------------------------------------------------------------- * VSR[62] | VR[30] | * ---------------------------------------------------------------- * VSR[63] | VR[31] | * ---------------------------------------------------------------- * * FPR/VSR 0-31 doubleword 0 is stored in fp_regs, and VMX/VSR 32-63 * is stored at the start of vmx_reserve. vmx_reserve is extended for * backwards compatility to store VSR 0-31 doubleword 1 after the VMX * registers and vscr/vrsave. */ elf_vrreg_t __user *v_regs; long vmx_reserve[ELF_NVRREG + ELF_NVRREG + 1 + 32]; #endif }; #endif /* _ASM_POWERPC_SIGCONTEXT_H */
Name | Type | Size | Permission | Actions |
---|---|---|---|---|
Kbuild | File | 211 B | 0644 |
|
auxvec.h | File | 1.73 KB | 0644 |
|
bitsperlong.h | File | 312 B | 0644 |
|
bootx.h | File | 4.31 KB | 0644 |
|
byteorder.h | File | 550 B | 0644 |
|
cputable.h | File | 2.22 KB | 0644 |
|
eeh.h | File | 2.18 KB | 0644 |
|
elf.h | File | 12.99 KB | 0644 |
|
epapr_hcalls.h | File | 4.17 KB | 0644 |
|
errno.h | File | 278 B | 0644 |
|
fcntl.h | File | 367 B | 0644 |
|
ioctl.h | File | 302 B | 0644 |
|
ioctls.h | File | 4.07 KB | 0644 |
|
ipcbuf.h | File | 1.03 KB | 0644 |
|
kvm.h | File | 22.22 KB | 0644 |
|
kvm_para.h | File | 2.73 KB | 0644 |
|
mman.h | File | 1.33 KB | 0644 |
|
msgbuf.h | File | 1.02 KB | 0644 |
|
nvram.h | File | 2.03 KB | 0644 |
|
opal-prd.h | File | 1.74 KB | 0644 |
|
perf_event.h | File | 565 B | 0644 |
|
perf_regs.h | File | 1.2 KB | 0644 |
|
posix_types.h | File | 738 B | 0644 |
|
ps3fb.h | File | 1.74 KB | 0644 |
|
ptrace.h | File | 7.4 KB | 0644 |
|
sembuf.h | File | 1.07 KB | 0644 |
|
setup.h | File | 203 B | 0644 |
|
shmbuf.h | File | 1.61 KB | 0644 |
|
sigcontext.h | File | 4.28 KB | 0644 |
|
siginfo.h | File | 576 B | 0644 |
|
signal.h | File | 3.27 KB | 0644 |
|
socket.h | File | 592 B | 0644 |
|
spu_info.h | File | 1.48 KB | 0644 |
|
stat.h | File | 2.26 KB | 0644 |
|
swab.h | File | 602 B | 0644 |
|
termbits.h | File | 5.1 KB | 0644 |
|
termios.h | File | 1.67 KB | 0644 |
|
tm.h | File | 734 B | 0644 |
|
types.h | File | 1.29 KB | 0644 |
|
ucontext.h | File | 975 B | 0644 |
|
unistd.h | File | 10.87 KB | 0644 |
|