Back to home page

OSCL-LXR
 
 

     

0001 // SPDX-License-Identifier: GPL-2.0
0002 /*
0003  * arch/alpha/lib/fpreg.c
0004  *
0005  * (C) Copyright 1998 Linus Torvalds
0006  */
0007 
0008 #include <linux/compiler.h>
0009 #include <linux/export.h>
0010 
0011 #if defined(CONFIG_ALPHA_EV6) || defined(CONFIG_ALPHA_EV67)
0012 #define STT(reg,val)  asm volatile ("ftoit $f"#reg",%0" : "=r"(val));
0013 #else
0014 #define STT(reg,val)  asm volatile ("stt $f"#reg",%0" : "=m"(val));
0015 #endif
0016 
0017 unsigned long
0018 alpha_read_fp_reg (unsigned long reg)
0019 {
0020     unsigned long val;
0021 
0022     switch (reg) {
0023           case  0: STT( 0, val); break;
0024           case  1: STT( 1, val); break;
0025           case  2: STT( 2, val); break;
0026           case  3: STT( 3, val); break;
0027           case  4: STT( 4, val); break;
0028           case  5: STT( 5, val); break;
0029           case  6: STT( 6, val); break;
0030           case  7: STT( 7, val); break;
0031           case  8: STT( 8, val); break;
0032           case  9: STT( 9, val); break;
0033           case 10: STT(10, val); break;
0034           case 11: STT(11, val); break;
0035           case 12: STT(12, val); break;
0036           case 13: STT(13, val); break;
0037           case 14: STT(14, val); break;
0038           case 15: STT(15, val); break;
0039           case 16: STT(16, val); break;
0040           case 17: STT(17, val); break;
0041           case 18: STT(18, val); break;
0042           case 19: STT(19, val); break;
0043           case 20: STT(20, val); break;
0044           case 21: STT(21, val); break;
0045           case 22: STT(22, val); break;
0046           case 23: STT(23, val); break;
0047           case 24: STT(24, val); break;
0048           case 25: STT(25, val); break;
0049           case 26: STT(26, val); break;
0050           case 27: STT(27, val); break;
0051           case 28: STT(28, val); break;
0052           case 29: STT(29, val); break;
0053           case 30: STT(30, val); break;
0054           case 31: STT(31, val); break;
0055           default: return 0;
0056     }
0057     return val;
0058 }
0059 EXPORT_SYMBOL(alpha_read_fp_reg);
0060 
0061 #if defined(CONFIG_ALPHA_EV6) || defined(CONFIG_ALPHA_EV67)
0062 #define LDT(reg,val)  asm volatile ("itoft %0,$f"#reg : : "r"(val));
0063 #else
0064 #define LDT(reg,val)  asm volatile ("ldt $f"#reg",%0" : : "m"(val));
0065 #endif
0066 
0067 void
0068 alpha_write_fp_reg (unsigned long reg, unsigned long val)
0069 {
0070     switch (reg) {
0071           case  0: LDT( 0, val); break;
0072           case  1: LDT( 1, val); break;
0073           case  2: LDT( 2, val); break;
0074           case  3: LDT( 3, val); break;
0075           case  4: LDT( 4, val); break;
0076           case  5: LDT( 5, val); break;
0077           case  6: LDT( 6, val); break;
0078           case  7: LDT( 7, val); break;
0079           case  8: LDT( 8, val); break;
0080           case  9: LDT( 9, val); break;
0081           case 10: LDT(10, val); break;
0082           case 11: LDT(11, val); break;
0083           case 12: LDT(12, val); break;
0084           case 13: LDT(13, val); break;
0085           case 14: LDT(14, val); break;
0086           case 15: LDT(15, val); break;
0087           case 16: LDT(16, val); break;
0088           case 17: LDT(17, val); break;
0089           case 18: LDT(18, val); break;
0090           case 19: LDT(19, val); break;
0091           case 20: LDT(20, val); break;
0092           case 21: LDT(21, val); break;
0093           case 22: LDT(22, val); break;
0094           case 23: LDT(23, val); break;
0095           case 24: LDT(24, val); break;
0096           case 25: LDT(25, val); break;
0097           case 26: LDT(26, val); break;
0098           case 27: LDT(27, val); break;
0099           case 28: LDT(28, val); break;
0100           case 29: LDT(29, val); break;
0101           case 30: LDT(30, val); break;
0102           case 31: LDT(31, val); break;
0103     }
0104 }
0105 EXPORT_SYMBOL(alpha_write_fp_reg);
0106 
0107 #if defined(CONFIG_ALPHA_EV6) || defined(CONFIG_ALPHA_EV67)
0108 #define STS(reg,val)  asm volatile ("ftois $f"#reg",%0" : "=r"(val));
0109 #else
0110 #define STS(reg,val)  asm volatile ("sts $f"#reg",%0" : "=m"(val));
0111 #endif
0112 
0113 unsigned long
0114 alpha_read_fp_reg_s (unsigned long reg)
0115 {
0116     unsigned long val;
0117 
0118     switch (reg) {
0119           case  0: STS( 0, val); break;
0120           case  1: STS( 1, val); break;
0121           case  2: STS( 2, val); break;
0122           case  3: STS( 3, val); break;
0123           case  4: STS( 4, val); break;
0124           case  5: STS( 5, val); break;
0125           case  6: STS( 6, val); break;
0126           case  7: STS( 7, val); break;
0127           case  8: STS( 8, val); break;
0128           case  9: STS( 9, val); break;
0129           case 10: STS(10, val); break;
0130           case 11: STS(11, val); break;
0131           case 12: STS(12, val); break;
0132           case 13: STS(13, val); break;
0133           case 14: STS(14, val); break;
0134           case 15: STS(15, val); break;
0135           case 16: STS(16, val); break;
0136           case 17: STS(17, val); break;
0137           case 18: STS(18, val); break;
0138           case 19: STS(19, val); break;
0139           case 20: STS(20, val); break;
0140           case 21: STS(21, val); break;
0141           case 22: STS(22, val); break;
0142           case 23: STS(23, val); break;
0143           case 24: STS(24, val); break;
0144           case 25: STS(25, val); break;
0145           case 26: STS(26, val); break;
0146           case 27: STS(27, val); break;
0147           case 28: STS(28, val); break;
0148           case 29: STS(29, val); break;
0149           case 30: STS(30, val); break;
0150           case 31: STS(31, val); break;
0151           default: return 0;
0152     }
0153     return val;
0154 }
0155 EXPORT_SYMBOL(alpha_read_fp_reg_s);
0156 
0157 #if defined(CONFIG_ALPHA_EV6) || defined(CONFIG_ALPHA_EV67)
0158 #define LDS(reg,val)  asm volatile ("itofs %0,$f"#reg : : "r"(val));
0159 #else
0160 #define LDS(reg,val)  asm volatile ("lds $f"#reg",%0" : : "m"(val));
0161 #endif
0162 
0163 void
0164 alpha_write_fp_reg_s (unsigned long reg, unsigned long val)
0165 {
0166     switch (reg) {
0167           case  0: LDS( 0, val); break;
0168           case  1: LDS( 1, val); break;
0169           case  2: LDS( 2, val); break;
0170           case  3: LDS( 3, val); break;
0171           case  4: LDS( 4, val); break;
0172           case  5: LDS( 5, val); break;
0173           case  6: LDS( 6, val); break;
0174           case  7: LDS( 7, val); break;
0175           case  8: LDS( 8, val); break;
0176           case  9: LDS( 9, val); break;
0177           case 10: LDS(10, val); break;
0178           case 11: LDS(11, val); break;
0179           case 12: LDS(12, val); break;
0180           case 13: LDS(13, val); break;
0181           case 14: LDS(14, val); break;
0182           case 15: LDS(15, val); break;
0183           case 16: LDS(16, val); break;
0184           case 17: LDS(17, val); break;
0185           case 18: LDS(18, val); break;
0186           case 19: LDS(19, val); break;
0187           case 20: LDS(20, val); break;
0188           case 21: LDS(21, val); break;
0189           case 22: LDS(22, val); break;
0190           case 23: LDS(23, val); break;
0191           case 24: LDS(24, val); break;
0192           case 25: LDS(25, val); break;
0193           case 26: LDS(26, val); break;
0194           case 27: LDS(27, val); break;
0195           case 28: LDS(28, val); break;
0196           case 29: LDS(29, val); break;
0197           case 30: LDS(30, val); break;
0198           case 31: LDS(31, val); break;
0199     }
0200 }
0201 EXPORT_SYMBOL(alpha_write_fp_reg_s);
[ Source navigation ] [ Diff markup ] [ Identifier search ] [ general search ]

This page was automatically generated by the 2.1.0 LXR engine.

The LXR team
Valid CSS 2.1! Valid HTML 4.01!