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authorIngo Molnar <mingo@elte.hu>2008-01-30 07:30:11 -0500
committerIngo Molnar <mingo@elte.hu>2008-01-30 07:30:11 -0500
commit3d0d14f983b55a570b976976284df4c434af3223 (patch)
tree864f11c0ce5ee1e15acdd196018b79d0d0e2685d /arch/x86/math-emu/fpu_etc.c
parenta4ec1effce83796209a0258602b0cf50026d86f2 (diff)
x86: lindent arch/i386/math-emu
lindent these files: errors lines of code errors/KLOC arch/x86/math-emu/ 2236 9424 237.2 arch/x86/math-emu/ 128 8706 14.7 no other changes. No code changed: text data bss dec hex filename 5589802 612739 3833856 10036397 9924ad vmlinux.before 5589802 612739 3833856 10036397 9924ad vmlinux.after the intent of this patch is to ease the automated tracking of kernel code quality - it's just much easier for us to maintain it if every file in arch/x86 is supposed to be clean. NOTE: it is a known problem of lindent that it causes some style damage of its own, but it's a safe tool (well, except for the gcc array range initializers extension), so we did the bulk of the changes via lindent, and did the manual fixups in a followup patch. the resulting math-emu code has been tested by Thomas Gleixner on a real 386 DX CPU as well, and it works fine. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/math-emu/fpu_etc.c')
-rw-r--r--arch/x86/math-emu/fpu_etc.c193
1 files changed, 90 insertions, 103 deletions
diff --git a/arch/x86/math-emu/fpu_etc.c b/arch/x86/math-emu/fpu_etc.c
index e3b5d465587f..e73631e0cde9 100644
--- a/arch/x86/math-emu/fpu_etc.c
+++ b/arch/x86/math-emu/fpu_etc.c
@@ -16,128 +16,115 @@
16#include "status_w.h" 16#include "status_w.h"
17#include "reg_constant.h" 17#include "reg_constant.h"
18 18
19 19static void fchs(FPU_REG * st0_ptr, u_char st0tag)
20static void fchs(FPU_REG *st0_ptr, u_char st0tag)
21{ 20{
22 if ( st0tag ^ TAG_Empty ) 21 if (st0tag ^ TAG_Empty) {
23 { 22 signbyte(st0_ptr) ^= SIGN_NEG;
24 signbyte(st0_ptr) ^= SIGN_NEG; 23 clear_C1();
25 clear_C1(); 24 } else
26 } 25 FPU_stack_underflow();
27 else
28 FPU_stack_underflow();
29} 26}
30 27
31 28static void fabs(FPU_REG * st0_ptr, u_char st0tag)
32static void fabs(FPU_REG *st0_ptr, u_char st0tag)
33{ 29{
34 if ( st0tag ^ TAG_Empty ) 30 if (st0tag ^ TAG_Empty) {
35 { 31 setpositive(st0_ptr);
36 setpositive(st0_ptr); 32 clear_C1();
37 clear_C1(); 33 } else
38 } 34 FPU_stack_underflow();
39 else
40 FPU_stack_underflow();
41} 35}
42 36
43 37static void ftst_(FPU_REG * st0_ptr, u_char st0tag)
44static void ftst_(FPU_REG *st0_ptr, u_char st0tag)
45{ 38{
46 switch (st0tag) 39 switch (st0tag) {
47 { 40 case TAG_Zero:
48 case TAG_Zero:
49 setcc(SW_C3);
50 break;
51 case TAG_Valid:
52 if (getsign(st0_ptr) == SIGN_POS)
53 setcc(0);
54 else
55 setcc(SW_C0);
56 break;
57 case TAG_Special:
58 switch ( FPU_Special(st0_ptr) )
59 {
60 case TW_Denormal:
61 if (getsign(st0_ptr) == SIGN_POS)
62 setcc(0);
63 else
64 setcc(SW_C0);
65 if ( denormal_operand() < 0 )
66 {
67#ifdef PECULIAR_486
68 /* This is weird! */
69 if (getsign(st0_ptr) == SIGN_POS)
70 setcc(SW_C3); 41 setcc(SW_C3);
42 break;
43 case TAG_Valid:
44 if (getsign(st0_ptr) == SIGN_POS)
45 setcc(0);
46 else
47 setcc(SW_C0);
48 break;
49 case TAG_Special:
50 switch (FPU_Special(st0_ptr)) {
51 case TW_Denormal:
52 if (getsign(st0_ptr) == SIGN_POS)
53 setcc(0);
54 else
55 setcc(SW_C0);
56 if (denormal_operand() < 0) {
57#ifdef PECULIAR_486
58 /* This is weird! */
59 if (getsign(st0_ptr) == SIGN_POS)
60 setcc(SW_C3);
71#endif /* PECULIAR_486 */ 61#endif /* PECULIAR_486 */
72 return; 62 return;
73 } 63 }
74 break; 64 break;
75 case TW_NaN: 65 case TW_NaN:
76 setcc(SW_C0|SW_C2|SW_C3); /* Operand is not comparable */ 66 setcc(SW_C0 | SW_C2 | SW_C3); /* Operand is not comparable */
77 EXCEPTION(EX_Invalid); 67 EXCEPTION(EX_Invalid);
78 break; 68 break;
79 case TW_Infinity: 69 case TW_Infinity:
80 if (getsign(st0_ptr) == SIGN_POS) 70 if (getsign(st0_ptr) == SIGN_POS)
81 setcc(0); 71 setcc(0);
82 else 72 else
83 setcc(SW_C0); 73 setcc(SW_C0);
84 break; 74 break;
85 default: 75 default:
86 setcc(SW_C0|SW_C2|SW_C3); /* Operand is not comparable */ 76 setcc(SW_C0 | SW_C2 | SW_C3); /* Operand is not comparable */
87 EXCEPTION(EX_INTERNAL|0x14); 77 EXCEPTION(EX_INTERNAL | 0x14);
88 break; 78 break;
79 }
80 break;
81 case TAG_Empty:
82 setcc(SW_C0 | SW_C2 | SW_C3);
83 EXCEPTION(EX_StackUnder);
84 break;
89 } 85 }
90 break;
91 case TAG_Empty:
92 setcc(SW_C0|SW_C2|SW_C3);
93 EXCEPTION(EX_StackUnder);
94 break;
95 }
96} 86}
97 87
98 88static void fxam(FPU_REG * st0_ptr, u_char st0tag)
99static void fxam(FPU_REG *st0_ptr, u_char st0tag)
100{ 89{
101 int c = 0; 90 int c = 0;
102 switch (st0tag) 91 switch (st0tag) {
103 { 92 case TAG_Empty:
104 case TAG_Empty: 93 c = SW_C3 | SW_C0;
105 c = SW_C3|SW_C0; 94 break;
106 break; 95 case TAG_Zero:
107 case TAG_Zero: 96 c = SW_C3;
108 c = SW_C3; 97 break;
109 break; 98 case TAG_Valid:
110 case TAG_Valid: 99 c = SW_C2;
111 c = SW_C2; 100 break;
112 break; 101 case TAG_Special:
113 case TAG_Special: 102 switch (FPU_Special(st0_ptr)) {
114 switch ( FPU_Special(st0_ptr) ) 103 case TW_Denormal:
115 { 104 c = SW_C2 | SW_C3; /* Denormal */
116 case TW_Denormal: 105 break;
117 c = SW_C2|SW_C3; /* Denormal */ 106 case TW_NaN:
118 break; 107 /* We also use NaN for unsupported types. */
119 case TW_NaN: 108 if ((st0_ptr->sigh & 0x80000000)
120 /* We also use NaN for unsupported types. */ 109 && (exponent(st0_ptr) == EXP_OVER))
121 if ( (st0_ptr->sigh & 0x80000000) && (exponent(st0_ptr) == EXP_OVER) ) 110 c = SW_C0;
122 c = SW_C0; 111 break;
123 break; 112 case TW_Infinity:
124 case TW_Infinity: 113 c = SW_C2 | SW_C0;
125 c = SW_C2|SW_C0; 114 break;
126 break; 115 }
127 } 116 }
128 } 117 if (getsign(st0_ptr) == SIGN_NEG)
129 if ( getsign(st0_ptr) == SIGN_NEG ) 118 c |= SW_C1;
130 c |= SW_C1; 119 setcc(c);
131 setcc(c);
132} 120}
133 121
134
135static FUNC_ST0 const fp_etc_table[] = { 122static FUNC_ST0 const fp_etc_table[] = {
136 fchs, fabs, (FUNC_ST0)FPU_illegal, (FUNC_ST0)FPU_illegal, 123 fchs, fabs, (FUNC_ST0) FPU_illegal, (FUNC_ST0) FPU_illegal,
137 ftst_, fxam, (FUNC_ST0)FPU_illegal, (FUNC_ST0)FPU_illegal 124 ftst_, fxam, (FUNC_ST0) FPU_illegal, (FUNC_ST0) FPU_illegal
138}; 125};
139 126
140void FPU_etc(void) 127void FPU_etc(void)
141{ 128{
142 (fp_etc_table[FPU_rm])(&st(0), FPU_gettag0()); 129 (fp_etc_table[FPU_rm]) (&st(0), FPU_gettag0());
143} 130}
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