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[libc] Add symbolic constants for si_code values. (#211945)

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Extend SIGCHLD-specific `si_code` values, already available in
`signal-macros.h` with Linux values for the rest of the signal-specific
codes specified in the POSIX.1-2024.
This commit is contained in:
Alexey Samsonov 2026-07-24 16:57:00 -07:00 committed by GitHub
parent 9a606af2f2
commit efc78d2029
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1 changed files with 40 additions and 0 deletions
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40
libc/include/llvm-libc-macros/linux/signal-macros.h
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@ -95,6 +95,39 @@
#define SIG_IGN __LLVM_LIBC_CAST(reinterpret_cast, void (*)(int), 1)
#define SIG_HOLD __LLVM_LIBC_CAST(reinterpret_cast, void (*)(int), 2)
// SIGILL si_codes
#define ILL_ILLOPC 1 // Illegal opcode
#define ILL_ILLOPN 2 // Illegal operand
#define ILL_ILLADR 3 // Illegal addressing mode
#define ILL_ILLTRP 4 // Illegal trap
#define ILL_PRVOPC 5 // Privileged opcode
#define ILL_PRVREG 6 // Privileged register
#define ILL_COPROC 7 // Coprocessor error
#define ILL_BADSTK 8 // Internal stack error
// SIGFPE si_codes
#define FPE_INTDIV 1 // Integer divide by zero
#define FPE_INTOVF 2 // Integer overflow
#define FPE_FLTDIV 3 // Floating-point divide by zero
#define FPE_FLTOVF 4 // Floating-point overflow
#define FPE_FLTUND 5 // Floating-point underflow
#define FPE_FLTRES 6 // Floating-point inexact result
#define FPE_FLTINV 7 // Invalid floating-point operation
#define FPE_FLTSUB 8 // Subscript out of range
// SIGSEGV si_codes
#define SEGV_MAPERR 1 // Address not mapped to object
#define SEGV_ACCERR 2 // Invalid permissions for mapped object
// SIGBUS si_codes
#define BUS_ADRALN 1 // Invalid address alignment
#define BUS_ADRERR 2 // Non-existent physical address
#define BUS_OBJERR 3 // Object-specific hardware error
// SIGTRAP si_codes
#define TRAP_BRKPT 1 // Process breakpoint
#define TRAP_TRACE 2 // Process trace trap
// SIGCHLD si_codes
#define CLD_EXITED 1 // child has exited
#define CLD_KILLED 2 // child was killed
@ -103,4 +136,11 @@
#define CLD_STOPPED 5 // child has stopped
#define CLD_CONTINUED 6 // stopped child has continued
// Other si_codes.
#define SI_USER 0 // Sent by kill()
#define SI_QUEUE (-1) // Sent by sigqueue()
#define SI_TIMER (-2) // Expiration of a timer set by timer_settime()
#define SI_ASYNCIO (-4) // Completion of an synchronous I/O request
#define SI_MESGQ (-3) // Arrival of a message on an empty message queue
#endif // LLVM_LIBC_MACROS_LINUX_SIGNAL_MACROS_H