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Differential D20587 Diff 58520 sys/kern/subr_coverage.c

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sys/kern/subr_coverage.c

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*/ */
void void
__sanitizer_cov_trace_pc(void) __sanitizer_cov_trace_pc(void)
{ {
cov_trace_pc_t trace_pc; cov_trace_pc_t trace_pc;
trace_pc = (cov_trace_pc_t)atomic_load_ptr(&cov_trace_pc); trace_pc = (cov_trace_pc_t)atomic_load_ptr(&cov_trace_pc);
if (trace_pc != NULL) if (trace_pc != NULL)
trace_pc((uint64_t)__builtin_return_address(0)); trace_pc((uintptr_t)__builtin_return_address(0));
} }
/* /*
* Comparison entry points. When the kernel performs a comparison * Comparison entry points. When the kernel performs a comparison
* operation the compiler inserts a call to one of the following * operation the compiler inserts a call to one of the following
* functions to record the operation. * functions to record the operation.
*/ */
void void
__sanitizer_cov_trace_cmp1(uint8_t arg1, uint8_t arg2) __sanitizer_cov_trace_cmp1(uint8_t arg1, uint8_t arg2)
{ {
cov_trace_cmp_t trace_cmp; cov_trace_cmp_t trace_cmp;
trace_cmp = (cov_trace_cmp_t)atomic_load_ptr(&cov_trace_cmp); trace_cmp = (cov_trace_cmp_t)atomic_load_ptr(&cov_trace_cmp);
if (trace_cmp != NULL) if (trace_cmp != NULL)
trace_cmp(COV_CMP_SIZE(0), arg1, arg2, trace_cmp(COV_CMP_SIZE(0), arg1, arg2,
(uint64_t)__builtin_return_address(0)); (uintptr_t)__builtin_return_address(0));
} }
void void
__sanitizer_cov_trace_cmp2(uint16_t arg1, uint16_t arg2) __sanitizer_cov_trace_cmp2(uint16_t arg1, uint16_t arg2)
{ {
cov_trace_cmp_t trace_cmp; cov_trace_cmp_t trace_cmp;
trace_cmp = (cov_trace_cmp_t)atomic_load_ptr(&cov_trace_cmp); trace_cmp = (cov_trace_cmp_t)atomic_load_ptr(&cov_trace_cmp);
if (trace_cmp != NULL) if (trace_cmp != NULL)
trace_cmp(COV_CMP_SIZE(1), arg1, arg2, trace_cmp(COV_CMP_SIZE(1), arg1, arg2,
(uint64_t)__builtin_return_address(0)); (uintptr_t)__builtin_return_address(0));
} }
void void
__sanitizer_cov_trace_cmp4(uint32_t arg1, uint32_t arg2) __sanitizer_cov_trace_cmp4(uint32_t arg1, uint32_t arg2)
{ {
cov_trace_cmp_t trace_cmp; cov_trace_cmp_t trace_cmp;
trace_cmp = (cov_trace_cmp_t)atomic_load_ptr(&cov_trace_cmp); trace_cmp = (cov_trace_cmp_t)atomic_load_ptr(&cov_trace_cmp);
if (trace_cmp != NULL) if (trace_cmp != NULL)
trace_cmp(COV_CMP_SIZE(2), arg1, arg2, trace_cmp(COV_CMP_SIZE(2), arg1, arg2,
(uint64_t)__builtin_return_address(0)); (uintptr_t)__builtin_return_address(0));
} }
void void
__sanitizer_cov_trace_cmp8(uint64_t arg1, uint64_t arg2) __sanitizer_cov_trace_cmp8(uint64_t arg1, uint64_t arg2)
{ {
cov_trace_cmp_t trace_cmp; cov_trace_cmp_t trace_cmp;
trace_cmp = (cov_trace_cmp_t)atomic_load_ptr(&cov_trace_cmp); trace_cmp = (cov_trace_cmp_t)atomic_load_ptr(&cov_trace_cmp);
if (trace_cmp != NULL) if (trace_cmp != NULL)
trace_cmp(COV_CMP_SIZE(3), arg1, arg2, trace_cmp(COV_CMP_SIZE(3), arg1, arg2,
(uint64_t)__builtin_return_address(0)); (uintptr_t)__builtin_return_address(0));
} }
void void
__sanitizer_cov_trace_const_cmp1(uint8_t arg1, uint8_t arg2) __sanitizer_cov_trace_const_cmp1(uint8_t arg1, uint8_t arg2)
{ {
cov_trace_cmp_t trace_cmp; cov_trace_cmp_t trace_cmp;
trace_cmp = (cov_trace_cmp_t)atomic_load_ptr(&cov_trace_cmp); trace_cmp = (cov_trace_cmp_t)atomic_load_ptr(&cov_trace_cmp);
if (trace_cmp != NULL) if (trace_cmp != NULL)
trace_cmp(COV_CMP_SIZE(0) | COV_CMP_CONST, arg1, arg2, trace_cmp(COV_CMP_SIZE(0) | COV_CMP_CONST, arg1, arg2,
(uint64_t)__builtin_return_address(0)); (uintptr_t)__builtin_return_address(0));
} }
void void
__sanitizer_cov_trace_const_cmp2(uint16_t arg1, uint16_t arg2) __sanitizer_cov_trace_const_cmp2(uint16_t arg1, uint16_t arg2)
{ {
cov_trace_cmp_t trace_cmp; cov_trace_cmp_t trace_cmp;
trace_cmp = (cov_trace_cmp_t)atomic_load_ptr(&cov_trace_cmp); trace_cmp = (cov_trace_cmp_t)atomic_load_ptr(&cov_trace_cmp);
if (trace_cmp != NULL) if (trace_cmp != NULL)
trace_cmp(COV_CMP_SIZE(1) | COV_CMP_CONST, arg1, arg2, trace_cmp(COV_CMP_SIZE(1) | COV_CMP_CONST, arg1, arg2,
(uint64_t)__builtin_return_address(0)); (uintptr_t)__builtin_return_address(0));
} }
void void
__sanitizer_cov_trace_const_cmp4(uint32_t arg1, uint32_t arg2) __sanitizer_cov_trace_const_cmp4(uint32_t arg1, uint32_t arg2)
{ {
cov_trace_cmp_t trace_cmp; cov_trace_cmp_t trace_cmp;
trace_cmp = (cov_trace_cmp_t)atomic_load_ptr(&cov_trace_cmp); trace_cmp = (cov_trace_cmp_t)atomic_load_ptr(&cov_trace_cmp);
if (trace_cmp != NULL) if (trace_cmp != NULL)
trace_cmp(COV_CMP_SIZE(2) | COV_CMP_CONST, arg1, arg2, trace_cmp(COV_CMP_SIZE(2) | COV_CMP_CONST, arg1, arg2,
(uint64_t)__builtin_return_address(0)); (uintptr_t)__builtin_return_address(0));
} }
void void
__sanitizer_cov_trace_const_cmp8(uint64_t arg1, uint64_t arg2) __sanitizer_cov_trace_const_cmp8(uint64_t arg1, uint64_t arg2)
{ {
cov_trace_cmp_t trace_cmp; cov_trace_cmp_t trace_cmp;
trace_cmp = (cov_trace_cmp_t)atomic_load_ptr(&cov_trace_cmp); trace_cmp = (cov_trace_cmp_t)atomic_load_ptr(&cov_trace_cmp);
if (trace_cmp != NULL) if (trace_cmp != NULL)
trace_cmp(COV_CMP_SIZE(3) | COV_CMP_CONST, arg1, arg2, trace_cmp(COV_CMP_SIZE(3) | COV_CMP_CONST, arg1, arg2,
(uint64_t)__builtin_return_address(0)); (uintptr_t)__builtin_return_address(0));
} }
/* /*
* val is the switch operand * val is the switch operand
* cases[0] is the number of case constants * cases[0] is the number of case constants
* cases[1] is the size of val in bits * cases[1] is the size of val in bits
* cases[2..n] are the case constants * cases[2..n] are the case constants
*/ */
void void
__sanitizer_cov_trace_switch(uint64_t val, uint64_t *cases) __sanitizer_cov_trace_switch(uint64_t val, uint64_t *cases)
{ {
uint64_t i, count, ret, type; uint64_t i, count, type;
uintptr_t ret;
cov_trace_cmp_t trace_cmp; cov_trace_cmp_t trace_cmp;
trace_cmp = (cov_trace_cmp_t)atomic_load_ptr(&cov_trace_cmp); trace_cmp = (cov_trace_cmp_t)atomic_load_ptr(&cov_trace_cmp);
if (trace_cmp == NULL) if (trace_cmp == NULL)
return; return;
count = cases[0]; count = cases[0];
ret = (uint64_t)__builtin_return_address(0); ret = (uintptr_t)__builtin_return_address(0);
switch (cases[1]) { switch (cases[1]) {
case 8: case 8:
type = COV_CMP_SIZE(0); type = COV_CMP_SIZE(0);
break; break;
case 16: case 16:
type = COV_CMP_SIZE(1); type = COV_CMP_SIZE(1);
break; break;
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