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0a48860c27
Author: Alex Suykov <alex.suykov@gmail.com> Author: Aric Belsito <lluixhi@gmail.com> Author: Drew DeVault <sir@cmpwn.com> Author: Michael Clark <mjc@sifive.com> Author: Michael Forney <mforney@mforney.org> Author: Stefan O'Rear <sorear2@gmail.com> 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.
113 lines
2.2 KiB
C
113 lines
2.2 KiB
C
#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
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|| defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
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#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
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# define MINSIGSTKSZ 2048
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# define SIGSTKSZ 8192
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#endif
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/* gregs[0] holds the program counter. */
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#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
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typedef unsigned long greg_t;
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typedef unsigned long gregset_t[32];
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struct __riscv_f_ext_state {
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unsigned int f[32];
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unsigned int fcsr;
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};
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struct __riscv_d_ext_state {
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unsigned long long f[32];
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unsigned int fcsr;
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};
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struct __riscv_q_ext_state {
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unsigned long long f[64] __attribute__((aligned(16)));
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unsigned int fcsr;
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unsigned int reserved[3];
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};
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union __riscv_fp_state {
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struct __riscv_f_ext_state f;
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struct __riscv_d_ext_state d;
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struct __riscv_q_ext_state q;
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};
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typedef union __riscv_fp_state fpregset_t;
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typedef struct sigcontext {
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gregset_t gregs;
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fpregset_t fpregs;
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} mcontext_t;
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#else
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typedef struct {
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unsigned long gregs[32];
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unsigned long long fpregs[66];
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} mcontext_t;
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#endif
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struct sigaltstack {
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void *ss_sp;
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int ss_flags;
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size_t ss_size;
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};
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typedef struct __ucontext
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{
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unsigned long uc_flags;
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struct __ucontext *uc_link;
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stack_t uc_stack;
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sigset_t uc_sigmask;
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mcontext_t uc_mcontext;
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} ucontext_t;
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#define SA_NOCLDSTOP 1
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#define SA_NOCLDWAIT 2
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#define SA_SIGINFO 4
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#define SA_ONSTACK 0x08000000
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#define SA_RESTART 0x10000000
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#define SA_NODEFER 0x40000000
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#define SA_RESETHAND 0x80000000
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#define SA_RESTORER 0x04000000
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#endif
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#define SIGHUP 1
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#define SIGINT 2
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#define SIGQUIT 3
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#define SIGILL 4
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#define SIGTRAP 5
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#define SIGABRT 6
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#define SIGIOT SIGABRT
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#define SIGBUS 7
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#define SIGFPE 8
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#define SIGKILL 9
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#define SIGUSR1 10
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#define SIGSEGV 11
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#define SIGUSR2 12
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#define SIGPIPE 13
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#define SIGALRM 14
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#define SIGTERM 15
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#define SIGSTKFLT 16
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#define SIGCHLD 17
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#define SIGCONT 18
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#define SIGSTOP 19
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#define SIGTSTP 20
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#define SIGTTIN 21
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#define SIGTTOU 22
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#define SIGURG 23
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#define SIGXCPU 24
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#define SIGXFSZ 25
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#define SIGVTALRM 26
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#define SIGPROF 27
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#define SIGWINCH 28
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#define SIGIO 29
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#define SIGPOLL SIGIO
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#define SIGPWR 30
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#define SIGSYS 31
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#define SIGUNUSED SIGSYS
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#define _NSIG 65
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