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comparison zruntime.S @ 559:6b248602ab84

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blastem builds and almost works on OS X now
author Mike Pavone <pavone@retrodev.com>
date Tue, 17 Jun 2014 01:50:29 -0400
parents b3738ee58195
children e13f4fd9cf6d
comparison
equal deleted inserted replaced
558:dc9f178085a0 559:6b248602ab84
123 z80_read_bank: 123 z80_read_bank:
124 /* approximation of wait states for normal 68K bus access */ 124 /* approximation of wait states for normal 68K bus access */
125 add $3, %ebp 125 add $3, %ebp
126 push %rsi 126 push %rsi
127 mov 144(%rsi), %rsi /* get system context pointer */ 127 mov 144(%rsi), %rsi /* get system context pointer */
128 cmp $0, 120(%rsi) /* check bus busy flag */ 128 cmpb $0, 120(%rsi) /* check bus busy flag */
129 pop %rsi 129 pop %rsi
130 jne bus_busy 130 jne bus_busy
131 z80_read_bank_cont: 131 z80_read_bank_cont:
132 and $0x7FFF, %r13 132 and $0x7FFF, %r13
133 cmp $0, %r12 133 cmp $0, %r12
241 241
242 z80_read_bank_word: 242 z80_read_bank_word:
243 add $3, %ebp /* first read typically has 3 wait states */ 243 add $3, %ebp /* first read typically has 3 wait states */
244 push %rsi 244 push %rsi
245 mov 144(%rsi), %rsi /* get system context pointer */ 245 mov 144(%rsi), %rsi /* get system context pointer */
246 cmp $0, 120(%rsi) /* check bus busy flag */ 246 cmpb $0, 120(%rsi) /* check bus busy flag */
247 pop %rsi 247 pop %rsi
248 jne bus_busy_word 248 jne bus_busy_word
249 z80_read_bank_word_cont: 249 z80_read_bank_word_cont:
250 push %r13 250 push %r13
251 call z80_read_bank_cont 251 call z80_read_bank_cont
254 inc %r13 254 inc %r13
255 call z_inccycles 255 call z_inccycles
256 add $4, %ebp /* second read typically has 4 wait states */ 256 add $4, %ebp /* second read typically has 4 wait states */
257 push %rsi 257 push %rsi
258 mov 144(%rsi), %rsi /* get system context pointer */ 258 mov 144(%rsi), %rsi /* get system context pointer */
259 cmp $0, 120(%rsi) /* check bus busy flag */ 259 cmpb $0, 120(%rsi) /* check bus busy flag */
260 pop %rsi 260 pop %rsi
261 jne bus_busy_word2 261 jne bus_busy_word2
262 z80_read_bank_word_cont2: 262 z80_read_bank_word_cont2:
263 call z80_read_bank_cont 263 call z80_read_bank_cont
264 shl $8, %r13w 264 shl $8, %r13w