Minix/minix
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

- exact magic values for entered/nonentered states in recursive enter check

Browse Source 
- read_*() functions to read segment selector values
 - decode loaded segments on panic
This commit is contained in:
Ben Gras
2009-10-03 12:17:46 +00:00
parent fe35879325
commit 6bd3002f06
4 changed files with 47 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
kernel/debug.h
View File

@@ -41,24 +41,38 @@
#define TRACE(code, statement)
#endif
#define ENTERED 0xBA5E1514
#define NOTENTERED 0x1415BEE1
#define NOREC_ENTER(varname) \
static int varname = 0; \
static int varname = NOTENTERED; \
int mustunlock = 0; \
if(!intr_disabled()) { lock; mustunlock = 1; } \
if(varname != ENTERED && varname != NOTENTERED) { \
printf("magictest: 0x%lx local: 0x%lx\n", magictest, varname);\
minix_panic(#varname " bogus value on enter", varname); \
} \
if(magictest != MAGICTEST) { \
printf("magictest: 0x%lx local: 0x%lx\n", magictest, varname);\
minix_panic(#varname " magictest failed", __LINE__); \
} \
if(varname) { \
if(varname == ENTERED) { \
minix_panic(#varname " recursive enter", __LINE__); \
} \
varname = 1;
varname = ENTERED;
#define NOREC_RETURN(varname, v) do { \
if(!varname) \
minix_panic(#varname " flag off", __LINE__); \
if(!intr_disabled()) \
minix_panic(#varname " interrupts on", __LINE__); \
varname = 0; \
if(magictest != MAGICTEST) { \
printf("magictest: 0x%lx local: 0x%lx\n", magictest, varname);\
minix_panic(#varname " magictest failed", __LINE__); \
} \
if(varname != ENTERED && varname != NOTENTERED) { \
printf("magictest: 0x%lx local: 0x%lx\n", magictest, varname);\
minix_panic(#varname " bogus value on return", varname); \
} \
varname = NOTENTERED; \
if(mustunlock) { unlock; } \
return v; \
} while(0)