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Line 66... Line 66...
66 
	wrmsr
 66 
	wrmsr
67 
 
 67 
 
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	pop %eax
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	pop %eax
69 
	ret
 69 
	ret
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 70 
 
- 
 
 71 
# Clear nested flag
- 
 
 72 
# overwrites %ecx
- 
 
 73 
.macro CLEAR_NT_FLAG
- 
 
 74 
	pushfl
- 
 
 75 
	pop %ecx
- 
 
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	and $0xffffbfff,%ecx
- 
 
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	push %ecx
- 
 
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	popfl
- 
 
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.endm
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 80 
 
72 
## Declare interrupt handlers
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## Declare interrupt handlers
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#
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#
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# Declare interrupt handlers for n interrupt
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# Declare interrupt handlers for n interrupt
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# vectors starting at vector i.
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# vectors starting at vector i.
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#
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#
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# The handlers setup data segment registers
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# The handlers setup data segment registers
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# and call exc_dispatch().
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# and call exc_dispatch().
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#
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#
- 
 
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#define INTERRUPT_ALIGN 64
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.macro handler i n
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.macro handler i n
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 91 
 
- 
 
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.ifeq \i-0x30     # Syscall handler
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	push %ds
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	push %es
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	push %fs
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	push %gs
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- 
 
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	# Push arguments on stack
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	push %edi
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	push %esi
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	push %edx
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	push %ecx
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	push %eax
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- 
 
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	# we must fill the data segment registers
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	movw $16,%ax
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	movw %ax,%ds
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	movw %ax,%es
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- 
 
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	sti
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	call syscall_handler   # syscall_handler(ax,cx,dx,si,di)
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	cli
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	addl $20, %esp         # clean-up of parameters
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- 
 
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	pop %gs
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	pop %fs
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	pop %es
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	pop %ds
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- 
 
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	CLEAR_NT_FLAG
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	iret
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.else
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	/*
 123 
	/*
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	 * This macro distinguishes between two versions of ia32 exceptions.
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	 * This macro distinguishes between two versions of ia32 exceptions.
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	 * One version has error word and the other does not have it.
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	 * One version has error word and the other does not have it.
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	 * The latter version fakes the error word on the stack so that the
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	 * The latter version fakes the error word on the stack so that the
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	 * handlers and istate_t can be the same for both types.
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	 * handlers and istate_t can be the same for both types.
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	 */
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	 */
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 - 
 
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	.iflt \i-32
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	.iflt \i-32
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		.if (1 << \i) & ERROR_WORD_INTERRUPT_LIST
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		.if (1 << \i) & ERROR_WORD_INTERRUPT_LIST
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			/*
 131 
			/*
92 
			 * Version with error word.
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			 * With error word, do nothing
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			 * Just take space equal to subl $4, %esp.
 - 
 
94 
			 */
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			 */
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			nop
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			nop
 - 
 
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			nop
 - 
 
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                .else
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                .else
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                        /*
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                        /*
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                         * Version without error word,
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                         * Version without error word,
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                         */
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                         */
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			subl $4, %esp
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			subl $4, %esp
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        .else
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        .else
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                /*
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                /*
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                 * Version without error word,
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                 * Version without error word,
107 
                 */
 143 
                 */
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		subl $4, %esp
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		subl $4, %esp
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        .endif
 145 
	.endif
110 
 
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111 
	pusha
 - 
 
112 
	movl %esp, %ebp
 - 
 
113 
	push %ds
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	push %ds
114 
	push %es
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	push %es
115 
	push %fs
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	push %fs
116 
	push %gs
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	push %gs
117 
 
 151 
 
- 
 
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#ifdef CONFIG_DEBUG_ALLREGS
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	push %ebx
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	push %ebp
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	push %edi
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	push %esi
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#else
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	sub $16, %esp
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#endif
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	push %edx
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	push %ecx
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	push %eax
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118 
	# we must fill the data segment registers
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	# we must fill the data segment registers
119 
	movw $16,%ax
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	movw $16,%ax
120 
	movw %ax,%ds
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	movw %ax,%ds
121 
	movw %ax,%es
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	movw %ax,%es
122 
 
 168 
 
123 
	pushl %ebp
 169 
	pushl %esp          # *istate
124 
	pushl $(\i)
 170 
	pushl $(\i)         # intnum
125 
	call exc_dispatch
 171 
	call exc_dispatch   # excdispatch(intnum, *istate)
126 
	addl $8,%esp
 172 
	addl $8,%esp        # Clear arguments from stack
127 
 
 173 
 
- 
 
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	CLEAR_NT_FLAG # Modifies %ecx
- 
 
 175
- 
 
 176 
	pop %eax
- 
 
 177 
	pop %ecx
- 
 
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	pop %edx
- 
 
 179 
#ifdef CONFIG_DEBUG_ALLREGS
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	pop %esi
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	pop %edi
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	pop %ebp
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 183 
	pop %ebx
- 
 
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#else
- 
 
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	add $16, %esp
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#endif
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128 
	pop %gs
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	pop %gs
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	pop %fs
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	pop %fs
130 
	pop %es
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	pop %es
131 
	pop %ds
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	pop %ds
132 
 
 192 
 
133 
# Clear Nested Task flag.
 - 
 
134 
	pushfl
 - 
 
135 
	pop %eax
 - 
 
136 
	and $0xffffbfff,%eax
 - 
 
137 
	push %eax
 - 
 
138 
	popfl
 - 
 
139
- 
 
140 
	popa
 - 
 
141 
	addl $4,%esp	# Skip error word, no matter whether real or fake.
 193 
	addl $4,%esp	# Skip error word, no matter whether real or fake.
142 
	iret
 194 
	iret
- 
 
 195 
.endif
143 
 
 196 
 
- 
 
 197 
	.align INTERRUPT_ALIGN
144 
	.if (\n-\i)-1
 198 
	.if (\n-\i)-1
145 
	handler "(\i+1)",\n
 199 
	handler "(\i+1)",\n
146 
	.endif
 200 
	.endif
147 
.endm
 201 
.endm
148 
 
 202 
 
149 
# keep in sync with pm.h !!!
 203 
# keep in sync with pm.h !!!
150 
IDT_ITEMS=64
 204 
IDT_ITEMS=64
- 
 
 205 
.align INTERRUPT_ALIGN
151 
interrupt_handlers:
 206 
interrupt_handlers:
152 
h_start:
 207 
h_start:
153 
	handler 0 64
 208 
	handler 0 IDT_ITEMS
154 
#	handler 64 128
- 
 
155 
#	handler 128 192
 - 
 
156 
#	handler 192 256
 - 
 
157 
h_end:
 209 
h_end:
158 
 
 210 
 
159 
.data
 211 
.data
160 
.global interrupt_handler_size
 212 
.global interrupt_handler_size
161 
 
 213