From 0a48860c27a8eb291bcc7616ea9eb073dc660cab Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Fri, 24 May 2019 10:46:08 -0400 Subject: add riscv64 architecture support Author: Alex Suykov Author: Aric Belsito Author: Drew DeVault Author: Michael Clark Author: Michael Forney Author: Stefan O'Rear This port has involved the work of many people over several years. I have tried to ensure that everyone with substantial contributions has been credited above; if any omissions are found they will be noted later in an update to the authors/contributors list in the COPYRIGHT file. The version committed here comes from the riscv/riscv-musl repo's commit 3fe7e2c75df78eef42dcdc352a55757729f451e2, with minor changes by me for issues found during final review: - a_ll/a_sc atomics are removed (according to the ISA spec, lr/sc are not safe to use in separate inline asm fragments) - a_cas[_p] is fixed to be a memory barrier - the call from the _start assembly into the C part of crt1/ldso is changed to allow for the possibility that the linker does not place them nearby each other. - DTP_OFFSET is defined correctly so that local-dynamic TLS works - reloc.h LDSO_ARCH logic is simplified and made explicit. - unused, non-functional crti/n asm files are removed. - an empty .sdata section is added to crt1 so that the __global_pointer reference is resolvable. - indentation style errors in some asm files are fixed. --- arch/riscv64/bits/signal.h | 112 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 112 insertions(+) create mode 100644 arch/riscv64/bits/signal.h (limited to 'arch/riscv64/bits/signal.h') diff --git a/arch/riscv64/bits/signal.h b/arch/riscv64/bits/signal.h new file mode 100644 index 00000000..4c94a8f0 --- /dev/null +++ b/arch/riscv64/bits/signal.h @@ -0,0 +1,112 @@ +#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \ + || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE) + +#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE) +# define MINSIGSTKSZ 2048 +# define SIGSTKSZ 8192 +#endif + +/* gregs[0] holds the program counter. */ + +#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE) +typedef unsigned long greg_t; +typedef unsigned long gregset_t[32]; + +struct __riscv_f_ext_state { + unsigned int f[32]; + unsigned int fcsr; +}; + +struct __riscv_d_ext_state { + unsigned long long f[32]; + unsigned int fcsr; +}; + +struct __riscv_q_ext_state { + unsigned long long f[64] __attribute__((aligned(16))); + unsigned int fcsr; + unsigned int reserved[3]; +}; + +union __riscv_fp_state { + struct __riscv_f_ext_state f; + struct __riscv_d_ext_state d; + struct __riscv_q_ext_state q; +}; + +typedef union __riscv_fp_state fpregset_t; + +typedef struct sigcontext { + gregset_t gregs; + fpregset_t fpregs; +} mcontext_t; + +#else +typedef struct { + unsigned long gregs[32]; + unsigned long long fpregs[66]; +} mcontext_t; +#endif + +struct sigaltstack { + void *ss_sp; + int ss_flags; + size_t ss_size; +}; + +typedef struct __ucontext +{ + unsigned long uc_flags; + struct __ucontext *uc_link; + stack_t uc_stack; + sigset_t uc_sigmask; + mcontext_t uc_mcontext; +} ucontext_t; + +#define SA_NOCLDSTOP 1 +#define SA_NOCLDWAIT 2 +#define SA_SIGINFO 4 +#define SA_ONSTACK 0x08000000 +#define SA_RESTART 0x10000000 +#define SA_NODEFER 0x40000000 +#define SA_RESETHAND 0x80000000 +#define SA_RESTORER 0x04000000 + +#endif + +#define SIGHUP 1 +#define SIGINT 2 +#define SIGQUIT 3 +#define SIGILL 4 +#define SIGTRAP 5 +#define SIGABRT 6 +#define SIGIOT SIGABRT +#define SIGBUS 7 +#define SIGFPE 8 +#define SIGKILL 9 +#define SIGUSR1 10 +#define SIGSEGV 11 +#define SIGUSR2 12 +#define SIGPIPE 13 +#define SIGALRM 14 +#define SIGTERM 15 +#define SIGSTKFLT 16 +#define SIGCHLD 17 +#define SIGCONT 18 +#define SIGSTOP 19 +#define SIGTSTP 20 +#define SIGTTIN 21 +#define SIGTTOU 22 +#define SIGURG 23 +#define SIGXCPU 24 +#define SIGXFSZ 25 +#define SIGVTALRM 26 +#define SIGPROF 27 +#define SIGWINCH 28 +#define SIGIO 29 +#define SIGPOLL SIGIO +#define SIGPWR 30 +#define SIGSYS 31 +#define SIGUNUSED SIGSYS + +#define _NSIG 65 -- cgit v1.2.1