1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * arch/alpha/lib/fpreg.c
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * (C) Copyright 1998 Linus Torvalds
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #include <linux/compiler.h>
9*4882a593Smuzhiyun #include <linux/export.h>
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun #if defined(CONFIG_ALPHA_EV6) || defined(CONFIG_ALPHA_EV67)
12*4882a593Smuzhiyun #define STT(reg,val) asm volatile ("ftoit $f"#reg",%0" : "=r"(val));
13*4882a593Smuzhiyun #else
14*4882a593Smuzhiyun #define STT(reg,val) asm volatile ("stt $f"#reg",%0" : "=m"(val));
15*4882a593Smuzhiyun #endif
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun unsigned long
alpha_read_fp_reg(unsigned long reg)18*4882a593Smuzhiyun alpha_read_fp_reg (unsigned long reg)
19*4882a593Smuzhiyun {
20*4882a593Smuzhiyun unsigned long val;
21*4882a593Smuzhiyun
22*4882a593Smuzhiyun switch (reg) {
23*4882a593Smuzhiyun case 0: STT( 0, val); break;
24*4882a593Smuzhiyun case 1: STT( 1, val); break;
25*4882a593Smuzhiyun case 2: STT( 2, val); break;
26*4882a593Smuzhiyun case 3: STT( 3, val); break;
27*4882a593Smuzhiyun case 4: STT( 4, val); break;
28*4882a593Smuzhiyun case 5: STT( 5, val); break;
29*4882a593Smuzhiyun case 6: STT( 6, val); break;
30*4882a593Smuzhiyun case 7: STT( 7, val); break;
31*4882a593Smuzhiyun case 8: STT( 8, val); break;
32*4882a593Smuzhiyun case 9: STT( 9, val); break;
33*4882a593Smuzhiyun case 10: STT(10, val); break;
34*4882a593Smuzhiyun case 11: STT(11, val); break;
35*4882a593Smuzhiyun case 12: STT(12, val); break;
36*4882a593Smuzhiyun case 13: STT(13, val); break;
37*4882a593Smuzhiyun case 14: STT(14, val); break;
38*4882a593Smuzhiyun case 15: STT(15, val); break;
39*4882a593Smuzhiyun case 16: STT(16, val); break;
40*4882a593Smuzhiyun case 17: STT(17, val); break;
41*4882a593Smuzhiyun case 18: STT(18, val); break;
42*4882a593Smuzhiyun case 19: STT(19, val); break;
43*4882a593Smuzhiyun case 20: STT(20, val); break;
44*4882a593Smuzhiyun case 21: STT(21, val); break;
45*4882a593Smuzhiyun case 22: STT(22, val); break;
46*4882a593Smuzhiyun case 23: STT(23, val); break;
47*4882a593Smuzhiyun case 24: STT(24, val); break;
48*4882a593Smuzhiyun case 25: STT(25, val); break;
49*4882a593Smuzhiyun case 26: STT(26, val); break;
50*4882a593Smuzhiyun case 27: STT(27, val); break;
51*4882a593Smuzhiyun case 28: STT(28, val); break;
52*4882a593Smuzhiyun case 29: STT(29, val); break;
53*4882a593Smuzhiyun case 30: STT(30, val); break;
54*4882a593Smuzhiyun case 31: STT(31, val); break;
55*4882a593Smuzhiyun default: return 0;
56*4882a593Smuzhiyun }
57*4882a593Smuzhiyun return val;
58*4882a593Smuzhiyun }
59*4882a593Smuzhiyun EXPORT_SYMBOL(alpha_read_fp_reg);
60*4882a593Smuzhiyun
61*4882a593Smuzhiyun #if defined(CONFIG_ALPHA_EV6) || defined(CONFIG_ALPHA_EV67)
62*4882a593Smuzhiyun #define LDT(reg,val) asm volatile ("itoft %0,$f"#reg : : "r"(val));
63*4882a593Smuzhiyun #else
64*4882a593Smuzhiyun #define LDT(reg,val) asm volatile ("ldt $f"#reg",%0" : : "m"(val));
65*4882a593Smuzhiyun #endif
66*4882a593Smuzhiyun
67*4882a593Smuzhiyun void
alpha_write_fp_reg(unsigned long reg,unsigned long val)68*4882a593Smuzhiyun alpha_write_fp_reg (unsigned long reg, unsigned long val)
69*4882a593Smuzhiyun {
70*4882a593Smuzhiyun switch (reg) {
71*4882a593Smuzhiyun case 0: LDT( 0, val); break;
72*4882a593Smuzhiyun case 1: LDT( 1, val); break;
73*4882a593Smuzhiyun case 2: LDT( 2, val); break;
74*4882a593Smuzhiyun case 3: LDT( 3, val); break;
75*4882a593Smuzhiyun case 4: LDT( 4, val); break;
76*4882a593Smuzhiyun case 5: LDT( 5, val); break;
77*4882a593Smuzhiyun case 6: LDT( 6, val); break;
78*4882a593Smuzhiyun case 7: LDT( 7, val); break;
79*4882a593Smuzhiyun case 8: LDT( 8, val); break;
80*4882a593Smuzhiyun case 9: LDT( 9, val); break;
81*4882a593Smuzhiyun case 10: LDT(10, val); break;
82*4882a593Smuzhiyun case 11: LDT(11, val); break;
83*4882a593Smuzhiyun case 12: LDT(12, val); break;
84*4882a593Smuzhiyun case 13: LDT(13, val); break;
85*4882a593Smuzhiyun case 14: LDT(14, val); break;
86*4882a593Smuzhiyun case 15: LDT(15, val); break;
87*4882a593Smuzhiyun case 16: LDT(16, val); break;
88*4882a593Smuzhiyun case 17: LDT(17, val); break;
89*4882a593Smuzhiyun case 18: LDT(18, val); break;
90*4882a593Smuzhiyun case 19: LDT(19, val); break;
91*4882a593Smuzhiyun case 20: LDT(20, val); break;
92*4882a593Smuzhiyun case 21: LDT(21, val); break;
93*4882a593Smuzhiyun case 22: LDT(22, val); break;
94*4882a593Smuzhiyun case 23: LDT(23, val); break;
95*4882a593Smuzhiyun case 24: LDT(24, val); break;
96*4882a593Smuzhiyun case 25: LDT(25, val); break;
97*4882a593Smuzhiyun case 26: LDT(26, val); break;
98*4882a593Smuzhiyun case 27: LDT(27, val); break;
99*4882a593Smuzhiyun case 28: LDT(28, val); break;
100*4882a593Smuzhiyun case 29: LDT(29, val); break;
101*4882a593Smuzhiyun case 30: LDT(30, val); break;
102*4882a593Smuzhiyun case 31: LDT(31, val); break;
103*4882a593Smuzhiyun }
104*4882a593Smuzhiyun }
105*4882a593Smuzhiyun EXPORT_SYMBOL(alpha_write_fp_reg);
106*4882a593Smuzhiyun
107*4882a593Smuzhiyun #if defined(CONFIG_ALPHA_EV6) || defined(CONFIG_ALPHA_EV67)
108*4882a593Smuzhiyun #define STS(reg,val) asm volatile ("ftois $f"#reg",%0" : "=r"(val));
109*4882a593Smuzhiyun #else
110*4882a593Smuzhiyun #define STS(reg,val) asm volatile ("sts $f"#reg",%0" : "=m"(val));
111*4882a593Smuzhiyun #endif
112*4882a593Smuzhiyun
113*4882a593Smuzhiyun unsigned long
alpha_read_fp_reg_s(unsigned long reg)114*4882a593Smuzhiyun alpha_read_fp_reg_s (unsigned long reg)
115*4882a593Smuzhiyun {
116*4882a593Smuzhiyun unsigned long val;
117*4882a593Smuzhiyun
118*4882a593Smuzhiyun switch (reg) {
119*4882a593Smuzhiyun case 0: STS( 0, val); break;
120*4882a593Smuzhiyun case 1: STS( 1, val); break;
121*4882a593Smuzhiyun case 2: STS( 2, val); break;
122*4882a593Smuzhiyun case 3: STS( 3, val); break;
123*4882a593Smuzhiyun case 4: STS( 4, val); break;
124*4882a593Smuzhiyun case 5: STS( 5, val); break;
125*4882a593Smuzhiyun case 6: STS( 6, val); break;
126*4882a593Smuzhiyun case 7: STS( 7, val); break;
127*4882a593Smuzhiyun case 8: STS( 8, val); break;
128*4882a593Smuzhiyun case 9: STS( 9, val); break;
129*4882a593Smuzhiyun case 10: STS(10, val); break;
130*4882a593Smuzhiyun case 11: STS(11, val); break;
131*4882a593Smuzhiyun case 12: STS(12, val); break;
132*4882a593Smuzhiyun case 13: STS(13, val); break;
133*4882a593Smuzhiyun case 14: STS(14, val); break;
134*4882a593Smuzhiyun case 15: STS(15, val); break;
135*4882a593Smuzhiyun case 16: STS(16, val); break;
136*4882a593Smuzhiyun case 17: STS(17, val); break;
137*4882a593Smuzhiyun case 18: STS(18, val); break;
138*4882a593Smuzhiyun case 19: STS(19, val); break;
139*4882a593Smuzhiyun case 20: STS(20, val); break;
140*4882a593Smuzhiyun case 21: STS(21, val); break;
141*4882a593Smuzhiyun case 22: STS(22, val); break;
142*4882a593Smuzhiyun case 23: STS(23, val); break;
143*4882a593Smuzhiyun case 24: STS(24, val); break;
144*4882a593Smuzhiyun case 25: STS(25, val); break;
145*4882a593Smuzhiyun case 26: STS(26, val); break;
146*4882a593Smuzhiyun case 27: STS(27, val); break;
147*4882a593Smuzhiyun case 28: STS(28, val); break;
148*4882a593Smuzhiyun case 29: STS(29, val); break;
149*4882a593Smuzhiyun case 30: STS(30, val); break;
150*4882a593Smuzhiyun case 31: STS(31, val); break;
151*4882a593Smuzhiyun default: return 0;
152*4882a593Smuzhiyun }
153*4882a593Smuzhiyun return val;
154*4882a593Smuzhiyun }
155*4882a593Smuzhiyun EXPORT_SYMBOL(alpha_read_fp_reg_s);
156*4882a593Smuzhiyun
157*4882a593Smuzhiyun #if defined(CONFIG_ALPHA_EV6) || defined(CONFIG_ALPHA_EV67)
158*4882a593Smuzhiyun #define LDS(reg,val) asm volatile ("itofs %0,$f"#reg : : "r"(val));
159*4882a593Smuzhiyun #else
160*4882a593Smuzhiyun #define LDS(reg,val) asm volatile ("lds $f"#reg",%0" : : "m"(val));
161*4882a593Smuzhiyun #endif
162*4882a593Smuzhiyun
163*4882a593Smuzhiyun void
alpha_write_fp_reg_s(unsigned long reg,unsigned long val)164*4882a593Smuzhiyun alpha_write_fp_reg_s (unsigned long reg, unsigned long val)
165*4882a593Smuzhiyun {
166*4882a593Smuzhiyun switch (reg) {
167*4882a593Smuzhiyun case 0: LDS( 0, val); break;
168*4882a593Smuzhiyun case 1: LDS( 1, val); break;
169*4882a593Smuzhiyun case 2: LDS( 2, val); break;
170*4882a593Smuzhiyun case 3: LDS( 3, val); break;
171*4882a593Smuzhiyun case 4: LDS( 4, val); break;
172*4882a593Smuzhiyun case 5: LDS( 5, val); break;
173*4882a593Smuzhiyun case 6: LDS( 6, val); break;
174*4882a593Smuzhiyun case 7: LDS( 7, val); break;
175*4882a593Smuzhiyun case 8: LDS( 8, val); break;
176*4882a593Smuzhiyun case 9: LDS( 9, val); break;
177*4882a593Smuzhiyun case 10: LDS(10, val); break;
178*4882a593Smuzhiyun case 11: LDS(11, val); break;
179*4882a593Smuzhiyun case 12: LDS(12, val); break;
180*4882a593Smuzhiyun case 13: LDS(13, val); break;
181*4882a593Smuzhiyun case 14: LDS(14, val); break;
182*4882a593Smuzhiyun case 15: LDS(15, val); break;
183*4882a593Smuzhiyun case 16: LDS(16, val); break;
184*4882a593Smuzhiyun case 17: LDS(17, val); break;
185*4882a593Smuzhiyun case 18: LDS(18, val); break;
186*4882a593Smuzhiyun case 19: LDS(19, val); break;
187*4882a593Smuzhiyun case 20: LDS(20, val); break;
188*4882a593Smuzhiyun case 21: LDS(21, val); break;
189*4882a593Smuzhiyun case 22: LDS(22, val); break;
190*4882a593Smuzhiyun case 23: LDS(23, val); break;
191*4882a593Smuzhiyun case 24: LDS(24, val); break;
192*4882a593Smuzhiyun case 25: LDS(25, val); break;
193*4882a593Smuzhiyun case 26: LDS(26, val); break;
194*4882a593Smuzhiyun case 27: LDS(27, val); break;
195*4882a593Smuzhiyun case 28: LDS(28, val); break;
196*4882a593Smuzhiyun case 29: LDS(29, val); break;
197*4882a593Smuzhiyun case 30: LDS(30, val); break;
198*4882a593Smuzhiyun case 31: LDS(31, val); break;
199*4882a593Smuzhiyun }
200*4882a593Smuzhiyun }
201*4882a593Smuzhiyun EXPORT_SYMBOL(alpha_write_fp_reg_s);
202