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authorLen Brown <len.brown@intel.com>2005-08-05 00:44:28 -0400
committerLen Brown <len.brown@intel.com>2005-08-05 00:45:14 -0400
commit4be44fcd3bf648b782f4460fd06dfae6c42ded4b (patch)
tree5b5b7d296ea58786f53b95e5eac9565ff66890b0 /drivers/acpi/utilities/utmath.c
parentc65ade4dc8b486e8c8b9b0a6399789a5428e2039 (diff)
[ACPI] Lindent all ACPI files
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/utilities/utmath.c')
-rw-r--r--drivers/acpi/utilities/utmath.c144
1 files changed, 60 insertions, 84 deletions
diff --git a/drivers/acpi/utilities/utmath.c b/drivers/acpi/utilities/utmath.c
index 0d527c91543c..68a0a6f94129 100644
--- a/drivers/acpi/utilities/utmath.c
+++ b/drivers/acpi/utilities/utmath.c
@@ -41,19 +41,16 @@
41 * POSSIBILITY OF SUCH DAMAGES. 41 * POSSIBILITY OF SUCH DAMAGES.
42 */ 42 */
43 43
44
45#include <acpi/acpi.h> 44#include <acpi/acpi.h>
46 45
47
48#define _COMPONENT ACPI_UTILITIES 46#define _COMPONENT ACPI_UTILITIES
49 ACPI_MODULE_NAME ("utmath") 47ACPI_MODULE_NAME("utmath")
50 48
51/* 49/*
52 * Support for double-precision integer divide. This code is included here 50 * Support for double-precision integer divide. This code is included here
53 * in order to support kernel environments where the double-precision math 51 * in order to support kernel environments where the double-precision math
54 * library is not available. 52 * library is not available.
55 */ 53 */
56
57#ifndef ACPI_USE_NATIVE_DIVIDE 54#ifndef ACPI_USE_NATIVE_DIVIDE
58/******************************************************************************* 55/*******************************************************************************
59 * 56 *
@@ -71,27 +68,22 @@
71 * 32-bit remainder. 68 * 32-bit remainder.
72 * 69 *
73 ******************************************************************************/ 70 ******************************************************************************/
74
75acpi_status 71acpi_status
76acpi_ut_short_divide ( 72acpi_ut_short_divide(acpi_integer dividend,
77 acpi_integer dividend, 73 u32 divisor,
78 u32 divisor, 74 acpi_integer * out_quotient, u32 * out_remainder)
79 acpi_integer *out_quotient,
80 u32 *out_remainder)
81{ 75{
82 union uint64_overlay dividend_ovl; 76 union uint64_overlay dividend_ovl;
83 union uint64_overlay quotient; 77 union uint64_overlay quotient;
84 u32 remainder32; 78 u32 remainder32;
85
86
87 ACPI_FUNCTION_TRACE ("ut_short_divide");
88 79
80 ACPI_FUNCTION_TRACE("ut_short_divide");
89 81
90 /* Always check for a zero divisor */ 82 /* Always check for a zero divisor */
91 83
92 if (divisor == 0) { 84 if (divisor == 0) {
93 ACPI_REPORT_ERROR (("acpi_ut_short_divide: Divide by zero\n")); 85 ACPI_REPORT_ERROR(("acpi_ut_short_divide: Divide by zero\n"));
94 return_ACPI_STATUS (AE_AML_DIVIDE_BY_ZERO); 86 return_ACPI_STATUS(AE_AML_DIVIDE_BY_ZERO);
95 } 87 }
96 88
97 dividend_ovl.full = dividend; 89 dividend_ovl.full = dividend;
@@ -100,9 +92,9 @@ acpi_ut_short_divide (
100 * The quotient is 64 bits, the remainder is always 32 bits, 92 * The quotient is 64 bits, the remainder is always 32 bits,
101 * and is generated by the second divide. 93 * and is generated by the second divide.
102 */ 94 */
103 ACPI_DIV_64_BY_32 (0, dividend_ovl.part.hi, divisor, 95 ACPI_DIV_64_BY_32(0, dividend_ovl.part.hi, divisor,
104 quotient.part.hi, remainder32); 96 quotient.part.hi, remainder32);
105 ACPI_DIV_64_BY_32 (remainder32, dividend_ovl.part.lo, divisor, 97 ACPI_DIV_64_BY_32(remainder32, dividend_ovl.part.lo, divisor,
106 quotient.part.lo, remainder32); 98 quotient.part.lo, remainder32);
107 99
108 /* Return only what was requested */ 100 /* Return only what was requested */
@@ -114,10 +106,9 @@ acpi_ut_short_divide (
114 *out_remainder = remainder32; 106 *out_remainder = remainder32;
115 } 107 }
116 108
117 return_ACPI_STATUS (AE_OK); 109 return_ACPI_STATUS(AE_OK);
118} 110}
119 111
120
121/******************************************************************************* 112/*******************************************************************************
122 * 113 *
123 * FUNCTION: acpi_ut_divide 114 * FUNCTION: acpi_ut_divide
@@ -134,34 +125,30 @@ acpi_ut_short_divide (
134 ******************************************************************************/ 125 ******************************************************************************/
135 126
136acpi_status 127acpi_status
137acpi_ut_divide ( 128acpi_ut_divide(acpi_integer in_dividend,
138 acpi_integer in_dividend, 129 acpi_integer in_divisor,
139 acpi_integer in_divisor, 130 acpi_integer * out_quotient, acpi_integer * out_remainder)
140 acpi_integer *out_quotient,
141 acpi_integer *out_remainder)
142{ 131{
143 union uint64_overlay dividend; 132 union uint64_overlay dividend;
144 union uint64_overlay divisor; 133 union uint64_overlay divisor;
145 union uint64_overlay quotient; 134 union uint64_overlay quotient;
146 union uint64_overlay remainder; 135 union uint64_overlay remainder;
147 union uint64_overlay normalized_dividend; 136 union uint64_overlay normalized_dividend;
148 union uint64_overlay normalized_divisor; 137 union uint64_overlay normalized_divisor;
149 u32 partial1; 138 u32 partial1;
150 union uint64_overlay partial2; 139 union uint64_overlay partial2;
151 union uint64_overlay partial3; 140 union uint64_overlay partial3;
152 141
153 142 ACPI_FUNCTION_TRACE("ut_divide");
154 ACPI_FUNCTION_TRACE ("ut_divide");
155
156 143
157 /* Always check for a zero divisor */ 144 /* Always check for a zero divisor */
158 145
159 if (in_divisor == 0) { 146 if (in_divisor == 0) {
160 ACPI_REPORT_ERROR (("acpi_ut_divide: Divide by zero\n")); 147 ACPI_REPORT_ERROR(("acpi_ut_divide: Divide by zero\n"));
161 return_ACPI_STATUS (AE_AML_DIVIDE_BY_ZERO); 148 return_ACPI_STATUS(AE_AML_DIVIDE_BY_ZERO);
162 } 149 }
163 150
164 divisor.full = in_divisor; 151 divisor.full = in_divisor;
165 dividend.full = in_dividend; 152 dividend.full = in_dividend;
166 if (divisor.part.hi == 0) { 153 if (divisor.part.hi == 0) {
167 /* 154 /*
@@ -174,9 +161,9 @@ acpi_ut_divide (
174 * The quotient is 64 bits, the remainder is always 32 bits, 161 * The quotient is 64 bits, the remainder is always 32 bits,
175 * and is generated by the second divide. 162 * and is generated by the second divide.
176 */ 163 */
177 ACPI_DIV_64_BY_32 (0, dividend.part.hi, divisor.part.lo, 164 ACPI_DIV_64_BY_32(0, dividend.part.hi, divisor.part.lo,
178 quotient.part.hi, partial1); 165 quotient.part.hi, partial1);
179 ACPI_DIV_64_BY_32 (partial1, dividend.part.lo, divisor.part.lo, 166 ACPI_DIV_64_BY_32(partial1, dividend.part.lo, divisor.part.lo,
180 quotient.part.lo, remainder.part.lo); 167 quotient.part.lo, remainder.part.lo);
181 } 168 }
182 169
@@ -185,23 +172,23 @@ acpi_ut_divide (
185 * 2) The general case where the divisor is a full 64 bits 172 * 2) The general case where the divisor is a full 64 bits
186 * is more difficult 173 * is more difficult
187 */ 174 */
188 quotient.part.hi = 0; 175 quotient.part.hi = 0;
189 normalized_dividend = dividend; 176 normalized_dividend = dividend;
190 normalized_divisor = divisor; 177 normalized_divisor = divisor;
191 178
192 /* Normalize the operands (shift until the divisor is < 32 bits) */ 179 /* Normalize the operands (shift until the divisor is < 32 bits) */
193 180
194 do { 181 do {
195 ACPI_SHIFT_RIGHT_64 (normalized_divisor.part.hi, 182 ACPI_SHIFT_RIGHT_64(normalized_divisor.part.hi,
196 normalized_divisor.part.lo); 183 normalized_divisor.part.lo);
197 ACPI_SHIFT_RIGHT_64 (normalized_dividend.part.hi, 184 ACPI_SHIFT_RIGHT_64(normalized_dividend.part.hi,
198 normalized_dividend.part.lo); 185 normalized_dividend.part.lo);
199 186
200 } while (normalized_divisor.part.hi != 0); 187 } while (normalized_divisor.part.hi != 0);
201 188
202 /* Partial divide */ 189 /* Partial divide */
203 190
204 ACPI_DIV_64_BY_32 (normalized_dividend.part.hi, 191 ACPI_DIV_64_BY_32(normalized_dividend.part.hi,
205 normalized_dividend.part.lo, 192 normalized_dividend.part.lo,
206 normalized_divisor.part.lo, 193 normalized_divisor.part.lo,
207 quotient.part.lo, partial1); 194 quotient.part.lo, partial1);
@@ -210,8 +197,9 @@ acpi_ut_divide (
210 * The quotient is always 32 bits, and simply requires adjustment. 197 * The quotient is always 32 bits, and simply requires adjustment.
211 * The 64-bit remainder must be generated. 198 * The 64-bit remainder must be generated.
212 */ 199 */
213 partial1 = quotient.part.lo * divisor.part.hi; 200 partial1 = quotient.part.lo * divisor.part.hi;
214 partial2.full = (acpi_integer) quotient.part.lo * divisor.part.lo; 201 partial2.full =
202 (acpi_integer) quotient.part.lo * divisor.part.lo;
215 partial3.full = (acpi_integer) partial2.part.hi + partial1; 203 partial3.full = (acpi_integer) partial2.part.hi + partial1;
216 204
217 remainder.part.hi = partial3.part.lo; 205 remainder.part.hi = partial3.part.lo;
@@ -224,16 +212,15 @@ acpi_ut_divide (
224 quotient.part.lo--; 212 quotient.part.lo--;
225 remainder.full -= divisor.full; 213 remainder.full -= divisor.full;
226 } 214 }
227 } 215 } else {
228 else {
229 quotient.part.lo--; 216 quotient.part.lo--;
230 remainder.full -= divisor.full; 217 remainder.full -= divisor.full;
231 } 218 }
232 } 219 }
233 220
234 remainder.full = remainder.full - dividend.full; 221 remainder.full = remainder.full - dividend.full;
235 remainder.part.hi = (u32) -((s32) remainder.part.hi); 222 remainder.part.hi = (u32) - ((s32) remainder.part.hi);
236 remainder.part.lo = (u32) -((s32) remainder.part.lo); 223 remainder.part.lo = (u32) - ((s32) remainder.part.lo);
237 224
238 if (remainder.part.lo) { 225 if (remainder.part.lo) {
239 remainder.part.hi--; 226 remainder.part.hi--;
@@ -250,11 +237,10 @@ acpi_ut_divide (
250 *out_remainder = remainder.full; 237 *out_remainder = remainder.full;
251 } 238 }
252 239
253 return_ACPI_STATUS (AE_OK); 240 return_ACPI_STATUS(AE_OK);
254} 241}
255 242
256#else 243#else
257
258/******************************************************************************* 244/*******************************************************************************
259 * 245 *
260 * FUNCTION: acpi_ut_short_divide, acpi_ut_divide 246 * FUNCTION: acpi_ut_short_divide, acpi_ut_divide
@@ -269,23 +255,19 @@ acpi_ut_divide (
269 * perform the divide. 255 * perform the divide.
270 * 256 *
271 ******************************************************************************/ 257 ******************************************************************************/
272
273acpi_status 258acpi_status
274acpi_ut_short_divide ( 259acpi_ut_short_divide(acpi_integer in_dividend,
275 acpi_integer in_dividend, 260 u32 divisor,
276 u32 divisor, 261 acpi_integer * out_quotient, u32 * out_remainder)
277 acpi_integer *out_quotient,
278 u32 *out_remainder)
279{ 262{
280 263
281 ACPI_FUNCTION_TRACE ("ut_short_divide"); 264 ACPI_FUNCTION_TRACE("ut_short_divide");
282
283 265
284 /* Always check for a zero divisor */ 266 /* Always check for a zero divisor */
285 267
286 if (divisor == 0) { 268 if (divisor == 0) {
287 ACPI_REPORT_ERROR (("acpi_ut_short_divide: Divide by zero\n")); 269 ACPI_REPORT_ERROR(("acpi_ut_short_divide: Divide by zero\n"));
288 return_ACPI_STATUS (AE_AML_DIVIDE_BY_ZERO); 270 return_ACPI_STATUS(AE_AML_DIVIDE_BY_ZERO);
289 } 271 }
290 272
291 /* Return only what was requested */ 273 /* Return only what was requested */
@@ -297,27 +279,23 @@ acpi_ut_short_divide (
297 *out_remainder = (u32) in_dividend % divisor; 279 *out_remainder = (u32) in_dividend % divisor;
298 } 280 }
299 281
300 return_ACPI_STATUS (AE_OK); 282 return_ACPI_STATUS(AE_OK);
301} 283}
302 284
303acpi_status 285acpi_status
304acpi_ut_divide ( 286acpi_ut_divide(acpi_integer in_dividend,
305 acpi_integer in_dividend, 287 acpi_integer in_divisor,
306 acpi_integer in_divisor, 288 acpi_integer * out_quotient, acpi_integer * out_remainder)
307 acpi_integer *out_quotient,
308 acpi_integer *out_remainder)
309{ 289{
310 ACPI_FUNCTION_TRACE ("ut_divide"); 290 ACPI_FUNCTION_TRACE("ut_divide");
311
312 291
313 /* Always check for a zero divisor */ 292 /* Always check for a zero divisor */
314 293
315 if (in_divisor == 0) { 294 if (in_divisor == 0) {
316 ACPI_REPORT_ERROR (("acpi_ut_divide: Divide by zero\n")); 295 ACPI_REPORT_ERROR(("acpi_ut_divide: Divide by zero\n"));
317 return_ACPI_STATUS (AE_AML_DIVIDE_BY_ZERO); 296 return_ACPI_STATUS(AE_AML_DIVIDE_BY_ZERO);
318 } 297 }
319 298
320
321 /* Return only what was requested */ 299 /* Return only what was requested */
322 300
323 if (out_quotient) { 301 if (out_quotient) {
@@ -327,9 +305,7 @@ acpi_ut_divide (
327 *out_remainder = in_dividend % in_divisor; 305 *out_remainder = in_dividend % in_divisor;
328 } 306 }
329 307
330 return_ACPI_STATUS (AE_OK); 308 return_ACPI_STATUS(AE_OK);
331} 309}
332 310
333#endif 311#endif
334
335