Rev 952 | Rev 1008 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed
Rev 952 | Rev 958 | ||
---|---|---|---|
Line 76... | Line 76... | ||
76 | # |
76 | # |
77 | # The handlers setup data segment registers |
77 | # The handlers setup data segment registers |
78 | # and call exc_dispatch(). |
78 | # and call exc_dispatch(). |
79 | # |
79 | # |
80 | .macro handler i n |
80 | .macro handler i n |
81 | push %ebp |
81 | push %eax |
- | 82 | ||
- | 83 | # Test if this is interrupt with error word or not |
|
82 | movl %esp,%ebp |
84 | movl $(1<<\i), %eax |
- | 85 | andl $ERROR_WORD_INTERRUPT_LIST,%eax |
|
- | 86 | ||
- | 87 | /* |
|
- | 88 | * If this interrupt/exception stores error word, |
|
- | 89 | * we need to pop EAX. |
|
- | 90 | * If this interrupt doesn't store error word, we emulate it |
|
- | 91 | * for the sake of consistent pstate structure. In that case |
|
- | 92 | * we merely leave the EAX on the stack. |
|
- | 93 | */ |
|
83 | pusha |
94 | jz 0f |
- | 95 | ||
- | 96 | /* |
|
- | 97 | * This exception stores error word. |
|
- | 98 | */ |
|
- | 99 | pop %eax |
|
- | 100 | jmp 1f |
|
- | 101 | ||
- | 102 | 0: |
|
- | 103 | /* |
|
- | 104 | * This interrupt doesn't store error word. |
|
- | 105 | * Just restore EAX without doing POP. |
|
- | 106 | */ |
|
- | 107 | movl (%esp), %eax |
|
84 | 108 | ||
- | 109 | 1: |
|
- | 110 | pusha |
|
- | 111 | movl %esp, %ebp |
|
85 | push %ds |
112 | push %ds |
86 | push %es |
113 | push %es |
87 | 114 | ||
88 | # we must fill the data segment registers |
115 | # we must fill the data segment registers |
89 | movw $16,%ax |
116 | movw $16,%ax |
90 | movw %ax,%ds |
117 | movw %ax,%ds |
91 | movw %ax,%es |
118 | movw %ax,%es |
92 | 119 | ||
93 | movl $(\i),%edi |
120 | movl $(\i),%edi |
94 | pushl %ebp |
121 | pushl %ebp |
95 | addl $4,(%esp) |
- | |
96 | pushl %edi |
122 | pushl %edi |
97 | call exc_dispatch |
123 | call exc_dispatch |
98 | addl $8,%esp |
124 | addl $8,%esp |
99 | 125 | ||
100 | pop %es |
126 | pop %es |
101 | pop %ds |
127 | pop %ds |
102 | 128 | ||
103 | - | ||
104 | # CLNT |
129 | # Clear Nested Task flag. |
105 | pushfl |
130 | pushfl |
106 | pop %eax |
131 | pop %eax |
107 | and $0xFFFFBFFF,%eax |
132 | and $0xFFFFBFFF,%eax |
108 | push %eax |
133 | push %eax |
109 | popfl |
134 | popfl |
110 | 135 | ||
111 | - | ||
112 | - | ||
113 | # Test if this is interrupt with error word or not |
- | |
114 | mov $\i,%cl |
- | |
115 | movl $1,%eax |
- | |
116 | test $0xe0,%cl |
- | |
117 | jnz 0f |
- | |
118 | and $0x1f,%cl |
- | |
119 | shl %cl,%eax |
- | |
120 | and $ERROR_WORD_INTERRUPT_LIST,%eax |
- | |
121 | jz 0f |
- | |
122 | - | ||
123 | - | ||
124 | # Return with error word |
- | |
125 | popa |
- | |
126 | pop %ebp |
- | |
127 | add $4,%esp # Skip error word |
- | |
128 | iret |
- | |
129 | - | ||
130 | 0: |
- | |
131 | # Return with no error word |
- | |
132 | popa |
136 | popa |
133 | pop %ebp |
137 | add $4,%esp # Skip error word, whether real or fake. |
134 | iret |
138 | iret |
135 | 139 | ||
136 | .if (\n-\i)-1 |
140 | .if (\n-\i)-1 |
137 | handler "(\i+1)",\n |
141 | handler "(\i+1)",\n |
138 | .endif |
142 | .endif |