[SanCov] Support SanitizerCoverage for CHERI purecap binaries #765
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This commit fixes type mismatches between uptr and usize.
This avoids the following errors:
<inline asm>:10:1: error: instruction requires the following: Not Capability Mode
10 | tail __interceptor_signal@plt
| ^
<inline asm>:19:1: error: instruction requires the following: Not Capability Mode
19 | tail __interceptor_sigaction@plt
|
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…n CHERI When multiple private sancov global variables across object files share the same name, even though they won't collide when they are linked together, their corresponding __cap_merged_table will. This commit appends a unique module identifier to the sancov global variable names to prevent collision. In the event that the unique module identifier obtained through getUniqueModuleId() is empty, we use the clang PID and time.
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This PR adds support for compiling purecap binaries with
-fsanitize-coverage.I have tested this in CHERI RISCV qemu.