^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) #include <linux/regset.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <asm/switch_to.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include "ptrace-decl.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Regardless of transactions, 'fp_state' holds the current running
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * value of all FPR registers and 'ckfp_state' holds the last checkpointed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * value of all FPR registers for the current transaction.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * Userspace interface buffer layout:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * struct data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * u64 fpr[32];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * u64 fpscr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) int fpr_get(struct task_struct *target, const struct user_regset *regset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) struct membuf to)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) u64 buf[33];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) flush_fp_to_thread(target);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) /* copy to local buffer then write that out */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) for (i = 0; i < 32 ; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) buf[i] = target->thread.TS_FPR(i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) buf[32] = target->thread.fp_state.fpscr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) return membuf_write(&to, buf, 33 * sizeof(u64));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * Regardless of transactions, 'fp_state' holds the current running
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) * value of all FPR registers and 'ckfp_state' holds the last checkpointed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) * value of all FPR registers for the current transaction.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) * Userspace interface buffer layout:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) * struct data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) * u64 fpr[32];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) * u64 fpscr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) * };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) int fpr_set(struct task_struct *target, const struct user_regset *regset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) unsigned int pos, unsigned int count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) const void *kbuf, const void __user *ubuf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) u64 buf[33];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) flush_fp_to_thread(target);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) for (i = 0; i < 32 ; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) buf[i] = target->thread.TS_FPR(i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) buf[32] = target->thread.fp_state.fpscr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) /* copy to local buffer then write that out */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) i = user_regset_copyin(&pos, &count, &kbuf, &ubuf, buf, 0, -1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) if (i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) return i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) for (i = 0; i < 32 ; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) target->thread.TS_FPR(i) = buf[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) target->thread.fp_state.fpscr = buf[32];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) * Currently to set and and get all the vsx state, you need to call
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) * the fp and VMX calls as well. This only get/sets the lower 32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) * 128bit VSX registers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) int vsr_active(struct task_struct *target, const struct user_regset *regset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) flush_vsx_to_thread(target);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) return target->thread.used_vsr ? regset->n : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) * Regardless of transactions, 'fp_state' holds the current running
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) * value of all FPR registers and 'ckfp_state' holds the last
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) * checkpointed value of all FPR registers for the current
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * transaction.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) * Userspace interface buffer layout:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) * struct data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) * u64 vsx[32];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) * };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) int vsr_get(struct task_struct *target, const struct user_regset *regset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) struct membuf to)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) u64 buf[32];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) flush_tmregs_to_thread(target);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) flush_fp_to_thread(target);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) flush_altivec_to_thread(target);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) flush_vsx_to_thread(target);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) for (i = 0; i < 32 ; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) buf[i] = target->thread.fp_state.fpr[i][TS_VSRLOWOFFSET];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) return membuf_write(&to, buf, 32 * sizeof(double));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) * Regardless of transactions, 'fp_state' holds the current running
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) * value of all FPR registers and 'ckfp_state' holds the last
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) * checkpointed value of all FPR registers for the current
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) * transaction.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) * Userspace interface buffer layout:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) * struct data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) * u64 vsx[32];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) * };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) int vsr_set(struct task_struct *target, const struct user_regset *regset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) unsigned int pos, unsigned int count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) const void *kbuf, const void __user *ubuf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) u64 buf[32];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) int ret, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) flush_tmregs_to_thread(target);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) flush_fp_to_thread(target);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) flush_altivec_to_thread(target);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) flush_vsx_to_thread(target);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) for (i = 0; i < 32 ; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) buf[i] = target->thread.fp_state.fpr[i][TS_VSRLOWOFFSET];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) buf, 0, 32 * sizeof(double));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) if (!ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) for (i = 0; i < 32 ; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) target->thread.fp_state.fpr[i][TS_VSRLOWOFFSET] = buf[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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