1 // SPDX-License-Identifier: GPL-2.0-or-later
34 #define VSX20 20 /* First VSX register to check in vsr20-vsr31 subset */
43 	/* First context will be set with these values, i.e. non-speculative */
51 	{-1, -2, -3, -4 },{-5, -6, -7, -8 },{-9, -10,-11,-12},
52 	{-13,-14,-15,-16},{-17,-18,-19,-20},{-21,-22,-23,-24},
53 	{-25,-26,-27,-28},{-29,-30,-31,-32},{-33,-34,-35,-36},
54 	{-37,-38,-39,-40},{-41,-42,-43,-44},{-45,-46,-47,-48}
63 	ucontext_t *tm_ucp = ucp->uc_link;  in signal_usr1()
68 	 * FP registers (f0-31) overlap the most significant 64 bits of VSX  in signal_usr1()
69 	 * registers vsr0-31, whilst VMX registers vr0-31, being 128-bit like  in signal_usr1()
70 	 * the VSX registers, overlap fully the other half of VSX registers,  in signal_usr1()
71 	 * i.e. vr0-31 overlaps fully vsr32-63.  in signal_usr1()
74 	 * appeared first on the architecture), VMX registers vr0-31 (so VSX  in signal_usr1()
75 	 * half vsr32-63 too) are stored right after the v_regs pointer, in an  in signal_usr1()
80 	 * The other VSX half (vsr0-31) is hence stored below vr0-31/vsr32-63  in signal_usr1()
81 	 * registers, but only the least significant 64 bits of vsr0-31. The  in signal_usr1()
82 	 * most significant 64 bits of vsr0-31 (f0-31), as it overlaps the FP  in signal_usr1()
87 	 * exists, so v_regs points to where vr0-31 / vsr32-63 registers are  in signal_usr1()
89 	 * skips all the slots used to store vr0-31 / vsr32-64 and points to  in signal_usr1()
90 	 * part of one VSX half, i.e. v_regs + 1 points to the least significant  in signal_usr1()
91 	 * 64 bits of vsr0-31. The other part of this half (the most significant  in signal_usr1()
92 	 * part of vsr0-31) is stored in fp_regs.  in signal_usr1()
95 	/* Get pointer to least significant doubleword of vsr0-31 */  in signal_usr1()
96 	long *vsx_ptr = (long *)(ucp->uc_mcontext.v_regs + 1);  in signal_usr1()
97 	long *tm_vsx_ptr = (long *)(tm_ucp->uc_mcontext.v_regs + 1);  in signal_usr1()
103 		 * copy VSX least significant one from 64-bit slots below  in signal_usr1()
106 		memcpy(vsx, &ucp->uc_mcontext.fp_regs[FPR20 + i], 8);  in signal_usr1()
127 		 * copy VSX least significant one from 64-bit slots below  in signal_usr1()
130 		memcpy(vsx_tm, &tm_ucp->uc_mcontext.fp_regs[FPR20 + i], 8);  in signal_usr1()
170                 * contexts accordingly to the values passed through non-NULL  in tm_signal_context_chk()