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comparison runtime.S @ 547:3090d016c9e9

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Generate get_sr, set_sr and set_ccr at runtime so they can respect the flag_regs setting
author Michael Pavone <pavone@retrodev.com>
date Tue, 18 Feb 2014 20:32:10 -0800
parents 67cf0ce57d8d
children 6b248602ab84 5a6ff0d76032
comparison
equal deleted inserted replaced
546:90aca661542b 547:3090d016c9e9
68 no_adjust_hs: 68 no_adjust_hs:
69 69
70 mov %rdi, %rax 70 mov %rdi, %rax
71 ret 71 ret
72 72
73 .global get_sr
74 get_sr:
75 mov 5(%rsi), %cl
76 shl $8, %cx
77 mov (%rsi), %cl
78 shl $1, %cl
79 or %bl, %cl
80 shl $1, %cl
81 or %dl, %cl
82 shl $1, %cl
83 or %bh, %cl
84 shl $1, %cl
85 or %dh, %cl
86 ret
87 73
88 .global set_sr
89 set_sr:
90 mov %cl, %dh
91 and $1, %dh
92 shr $1, %cl
93 mov %cl, %bh
94 and $1, %bh
95 shr $1, %cl
96 mov %cl, %dl
97 and $1, %dl
98 shr $1, %cl
99 mov %cl, %bl
100 and $1, %bl
101 shr $1, %cl
102 and $1, %cl
103 mov %cl, (%rsi)
104 shr $8, %cx
105 mov %cl, 5(%rsi)
106 ret
107 74
108 .global set_ccr
109 set_ccr:
110 mov %cl, %dh
111 and $1, %dh
112 shr $1, %cl
113 mov %cl, %bh
114 and $1, %bh
115 shr $1, %cl
116 mov %cl, %dl
117 and $1, %dl
118 shr $1, %cl
119 mov %cl, %bl
120 and $1, %bl
121 shr $1, %cl
122 and $1, %cl
123 mov %cl, (%rsi)
124 ret
125