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kernel/log: Add log_str helper for custom log_* functions/overloads

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When implementing custom log_... functions or custom overloads for the
core log functions like log_signal it is necessary to return `char *`
that are valid long enough.

The log_... functions implemented in log.cc use either `log_id_cache` or
`string_buf` which both are cleared on log_pop.

This commit adds a public `log_str` function which stores its argument
in the `log_id_cache` and returns the stored copy, such that custom
log functions outside of log.cc can also create strings that remain
valid until the next `log_pop`.
This commit is contained in:
Jannis Harder 2024-04-15 14:01:10 +02:00 • committed by Emily Schmidt
parent 0922142567
commit c73c8a39cf
2 changed files with 12 additions and 0 deletions
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kernel/log.h
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@ -206,6 +206,8 @@ void log_check_expected();
const char *log_signal(const RTLIL::SigSpec &sig, bool autoint = true);
const char *log_const(const RTLIL::Const &value, bool autoint = true);
const char *log_id(const RTLIL::IdString &id);
const char *log_str(const char *str);
const char *log_str(std::string const &str);
template<typename T> static inline const char *log_id(T *obj, const char *nullstr = nullptr) {
if (nullstr && obj == nullptr)