Changes in / [90ed058:873c681] in mainline
- Location:
- kernel
- Files:
-
- 4 edited
-
arch/ia32/include/interrupt.h (modified) (2 diffs)
-
arch/ia32/src/asm.S (modified) (3 diffs)
-
arch/ia32/src/interrupt.c (modified) (1 diff)
-
generic/src/debug/stacktrace.c (modified) (1 diff)
Legend:
- Unmodified
- Added
- Removed
-
kernel/arch/ia32/include/interrupt.h
r90ed058 r873c681 72 72 typedef struct istate { 73 73 uint32_t eax; 74 uint32_t ebx;75 74 uint32_t ecx; 76 75 uint32_t edx; 77 uint32_t edi;78 uint32_t esi;79 76 uint32_t ebp; 80 81 uint32_t ebp_frame; /* imitation of frame pointer linkage */82 uint32_t eip_frame; /* imitation of return address linkage */83 77 84 78 uint32_t gs; … … 87 81 uint32_t ds; 88 82 89 uint32_t error_word; /* real or fake error word */83 uint32_t error_word; 90 84 uint32_t eip; 91 85 uint32_t cs; 92 86 uint32_t eflags; 93 uint32_t esp; /* only if istate_t is from uspace */ 94 uint32_t ss; /* only if istate_t is from uspace */ 87 uint32_t stack[]; 95 88 } istate_t; 96 89 -
kernel/arch/ia32/src/asm.S
r90ed058 r873c681 142 142 .macro CLEAR_NT_FLAG 143 143 pushfl 144 andl $0xffffbfff, (%esp) 144 pop %ecx 145 and $0xffffbfff, %ecx 146 push %ecx 145 147 popfl 146 148 .endm … … 188 190 189 191 190 #define ISTATE_OFFSET_EAX 0191 #define ISTATE_OFFSET_EBX 4192 #define ISTATE_OFFSET_ECX 8193 #define ISTATE_OFFSET_EDX 12194 #define ISTATE_OFFSET_EDI 16195 #define ISTATE_OFFSET_ESI 20196 #define ISTATE_OFFSET_EBP 24197 #define ISTATE_OFFSET_EBP_FRAME 28198 #define ISTATE_OFFSET_EIP_FRAME 32199 #define ISTATE_OFFSET_GS 36200 #define ISTATE_OFFSET_FS 40201 #define ISTATE_OFFSET_ES 44202 #define ISTATE_OFFSET_DS 48203 #define ISTATE_OFFSET_ERROR_WORD 52204 #define ISTATE_OFFSET_EIP 56205 #define ISTATE_OFFSET_CS 60206 #define ISTATE_OFFSET_EFLAGS 64207 #define ISTATE_OFFSET_ESP 68208 #define ISTATE_OFFSET_SS 72209 210 /*211 * Size of the istate structure without the hardware-saved part and without the212 * error word.213 */214 #define ISTATE_SOFT_SIZE 52215 216 192 ## Declare interrupt handlers 217 193 # … … 222 198 # and call exc_dispatch(). 223 199 # 224 #define INTERRUPT_ALIGN 256200 #define INTERRUPT_ALIGN 128 225 201 .macro handler i n 226 202 227 .ifeq \i - 0x30 # Syscall handler 228 pushl %ds 229 pushl %es 230 pushl %fs 231 pushl %gs 232 233 # 234 # Push syscall arguments onto the stack 235 # 236 # NOTE: The idea behind the order of arguments passed in registers is to 237 # use all scratch registers first and preserved registers next. 238 # An optimized libc syscall wrapper can make use of this setup. 239 # 240 pushl %eax 241 pushl %ebp 242 pushl %edi 243 pushl %esi 244 pushl %ebx 245 pushl %ecx 246 pushl %edx 247 248 # we must fill the data segment registers 249 movw $16, %ax 250 movw %ax, %ds 251 movw %ax, %es 252 253 xorl %ebp, %ebp 254 255 cld 256 sti 257 # syscall_handler(edx, ecx, ebx, esi, edi, ebp, eax) 258 call syscall_handler 259 cli 260 261 movl 20(%esp), %ebp # restore EBP 262 addl $28, %esp # clean-up of parameters 263 264 popl %gs 265 popl %fs 266 popl %es 267 popl %ds 268 269 CLEAR_NT_FLAG 270 iret 271 .else 272 /* 273 * This macro distinguishes between two versions of ia32 exceptions. 274 * One version has error word and the other does not have it. 275 * The latter version fakes the error word on the stack so that the 276 * handlers and istate_t can be the same for both types. 277 */ 278 .iflt \i - 32 279 .if (1 << \i) & ERROR_WORD_INTERRUPT_LIST 280 # 281 # Exception with error word: do nothing 282 # 283 .else 284 # 285 # Exception without error word: fake up one 286 # 287 pushl $0 288 .endif 289 .else 290 # 291 # Interrupt: fake up one 292 # 293 pushl $0 294 .endif 295 296 subl $ISTATE_SOFT_SIZE, %esp 297 298 # 299 # Save the general purpose registers. 300 # 301 movl %eax, ISTATE_OFFSET_EAX(%esp) 302 movl %ebx, ISTATE_OFFSET_EBX(%esp) 303 movl %ecx, ISTATE_OFFSET_ECX(%esp) 304 movl %edx, ISTATE_OFFSET_EDX(%esp) 305 movl %edi, ISTATE_OFFSET_EDI(%esp) 306 movl %esi, ISTATE_OFFSET_ESI(%esp) 307 movl %ebp, ISTATE_OFFSET_EBP(%esp) 308 309 # 310 # Save the selector registers. 311 # 312 movl %gs, %eax 313 movl %fs, %ebx 314 movl %es, %ecx 315 movl %ds, %edx 316 317 movl %eax, ISTATE_OFFSET_GS(%esp) 318 movl %ebx, ISTATE_OFFSET_FS(%esp) 319 movl %ecx, ISTATE_OFFSET_ES(%esp) 320 movl %edx, ISTATE_OFFSET_DS(%esp) 321 322 # 323 # Switch to kernel selectors. 324 # 325 movl $16, %eax 326 movl %eax, %ds 327 movl %eax, %es 328 329 # 330 # Imitate a regular stack frame linkage. 331 # Stop stack traces here if we came from userspace. 332 # 333 cmpl $8, ISTATE_OFFSET_CS(%esp) 334 jz 0f 335 xorl %ebp, %ebp 336 0: movl %ebp, ISTATE_OFFSET_EBP_FRAME(%esp) 337 movl ISTATE_OFFSET_EIP(%esp), %eax 338 movl %eax, ISTATE_OFFSET_EIP_FRAME(%esp) 339 leal ISTATE_OFFSET_EBP_FRAME(%esp), %ebp 340 341 cld 342 343 pushl %esp # pass istate address 344 pushl $(\i) # pass intnum 345 call exc_dispatch # exc_dispatch(intnum, istate) 346 addl $8, %esp # Clear arguments from the stack 347 348 CLEAR_NT_FLAG 349 350 # 351 # Restore the selector registers. 352 # 353 movl ISTATE_OFFSET_GS(%esp), %eax 354 movl ISTATE_OFFSET_FS(%esp), %ebx 355 movl ISTATE_OFFSET_ES(%esp), %ecx 356 movl ISTATE_OFFSET_DS(%esp), %edx 357 358 movl %eax, %gs 359 movl %ebx, %fs 360 movl %ecx, %es 361 movl %edx, %ds 362 363 # 364 # Restore the scratch registers and the preserved registers the handler 365 # cloberred itself (i.e. EBX and EBP). 366 # 367 movl ISTATE_OFFSET_EAX(%esp), %eax 368 movl ISTATE_OFFSET_EBX(%esp), %ebx 369 movl ISTATE_OFFSET_ECX(%esp), %ecx 370 movl ISTATE_OFFSET_EDX(%esp), %edx 371 movl ISTATE_OFFSET_EBP(%esp), %ebp 372 373 addl $(ISTATE_SOFT_SIZE + 4), %esp 374 iret 375 .endif 376 377 .align INTERRUPT_ALIGN 378 .if (\n- \i) - 1 379 handler "(\i + 1)", \n 380 .endif 203 .ifeq \i - 0x30 # Syscall handler 204 pushl %ds 205 pushl %es 206 pushl %fs 207 pushl %gs 208 209 # 210 # Push syscall arguments onto the stack 211 # 212 # NOTE: The idea behind the order of arguments passed in registers is to 213 # use all scratch registers first and preserved registers next. 214 # An optimized libc syscall wrapper can make use of this setup. 215 # 216 pushl %eax 217 pushl %ebp 218 pushl %edi 219 pushl %esi 220 pushl %ebx 221 pushl %ecx 222 pushl %edx 223 224 # we must fill the data segment registers 225 movw $16, %ax 226 movw %ax, %ds 227 movw %ax, %es 228 229 xorl %ebp, %ebp 230 231 cld 232 sti 233 # syscall_handler(edx, ecx, ebx, esi, edi, ebp, eax) 234 call syscall_handler 235 cli 236 237 movl 20(%esp), %ebp # restore EBP 238 addl $28, %esp # clean-up of parameters 239 240 popl %gs 241 popl %fs 242 popl %es 243 popl %ds 244 245 CLEAR_NT_FLAG 246 iret 247 .else 248 /* 249 * This macro distinguishes between two versions of ia32 exceptions. 250 * One version has error word and the other does not have it. 251 * The latter version fakes the error word on the stack so that the 252 * handlers and istate_t can be the same for both types. 253 */ 254 .iflt \i - 32 255 .if (1 << \i) & ERROR_WORD_INTERRUPT_LIST 256 /* 257 * With error word, do nothing 258 */ 259 .else 260 /* 261 * Version without error word 262 */ 263 subl $4, %esp 264 .endif 265 .else 266 /* 267 * Version without error word 268 */ 269 subl $4, %esp 270 .endif 271 272 pushl %ds 273 pushl %es 274 pushl %fs 275 pushl %gs 276 277 pushl %ebp 278 pushl %edx 279 pushl %ecx 280 pushl %eax 281 282 # we must fill the data segment registers 283 284 movw $16, %ax 285 movw %ax, %ds 286 movw %ax, %es 287 288 # stop stack traces here if we came from userspace 289 cmpl $8, 40(%esp) 290 jz 0f 291 xorl %ebp, %ebp 292 293 0: 294 pushl %esp # *istate 295 pushl $(\i) # intnum 296 call exc_dispatch # exc_dispatch(intnum, *istate) 297 addl $8, %esp # Clear arguments from stack 298 299 CLEAR_NT_FLAG # Modifies %ecx 300 301 popl %eax 302 popl %ecx 303 popl %edx 304 popl %ebp 305 306 popl %gs 307 popl %fs 308 popl %es 309 popl %ds 310 311 # skip error word, no matter whether real or fake 312 addl $4, %esp 313 iret 314 .endif 315 316 .align INTERRUPT_ALIGN 317 .if (\n- \i) - 1 318 handler "(\i + 1)", \n 319 .endif 381 320 .endm 382 321 -
kernel/arch/ia32/src/interrupt.c
r90ed058 r873c681 65 65 void istate_decode(istate_t *istate) 66 66 { 67 printf("error_word=%p\n", istate->error_word); 68 printf("eflags=%p\n", istate->eflags); 69 70 printf("cs =%p\tds =%p\tes =%p\n", istate->cs, istate->ds, istate->es); 71 printf("fs =%p\tgs =%p", istate->fs, istate->gs); 72 if (istate_from_uspace(istate)) 73 printf("\tss =%p\n", istate->ss); 74 else 75 printf("\n"); 76 77 printf("eax=%p\tebx=%p\tecx=%p\n", istate->eax, istate->ebx, 78 istate->ecx); 79 printf("edx=%p\tedi=%p\tesi=%p\n", istate->edx, istate->edi, 80 istate->esi); 81 printf("ebp=%p\tesp=%p\teip=%p\n", istate->ebp, 82 istate_from_uspace(istate) ? istate->esp : (uintptr_t) &istate->esp, 83 istate->eip); 67 printf("error_word=%#lx\n", istate->error_word); 68 printf("cs =%#0.8lx\teflags=%#0.8lx\n", istate->cs, istate->eflags); 69 printf("eax=%#0.8lx\tecx=%#0.8lx\tedx=%#0.8lx\n", 70 istate->eax, istate->ecx, istate->edx); 84 71 } 85 72 -
kernel/generic/src/debug/stacktrace.c
r90ed058 r873c681 52 52 ops->symbol_resolve(pc, &symbol, &offset)) { 53 53 if (offset) 54 printf("%p: %s+% lx()\n", fp, symbol, offset);54 printf("%p: %s+%p()\n", fp, symbol, offset); 55 55 else 56 56 printf("%p: %s()\n", fp, symbol);
Note:
See TracChangeset
for help on using the changeset viewer.
