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https://github.com/jart/cosmopolitan.git
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69f4152f38
We had previously not enabled TLS in MODE=tiny in order to keep the smallest example programs (e.g. life.com) just 16kb in size. But it was error prone doing that, so now we just always enable it because this change uses hacks to ensure it won't increase life.com's size. This change also fixes a bug on NetBSD, where signal handlers would break thread local storage if SA_SIGINFO was being used. This looks like it might be a bug in NetBSD, but it's got a simple workaround.
84 lines
1.7 KiB
C
84 lines
1.7 KiB
C
#ifndef COSMOPOLITAN_LIBC_CALLS_STRUCT_UCONTEXT_NETBSD_INTERNAL_H_
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#define COSMOPOLITAN_LIBC_CALLS_STRUCT_UCONTEXT_NETBSD_INTERNAL_H_
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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// clang-format off
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#include "libc/calls/ucontext.h"
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#define __UCONTEXT_SIZE 784
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#define _UC_SIGMASK 0x01
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#define _UC_STACK 0x02
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#define _UC_CPU 0x04
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#define _UC_FPU 0x08
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#define _UC_TLSBASE 0x00080000
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#define _UC_SETSTACK 0x00010000
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#define _UC_CLRSTACK 0x00020000
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union sigval_netbsd {
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int32_t sival_int;
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void *sival_ptr;
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};
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struct sigset_netbsd {
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uint32_t __bits[4];
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};
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struct stack_netbsd {
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void *ss_sp;
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size_t ss_size;
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int32_t ss_flags;
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};
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struct mcontext_netbsd {
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union {
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struct {
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uint64_t rdi;
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uint64_t rsi;
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uint64_t rdx;
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uint64_t rcx;
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uint64_t r8;
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uint64_t r9;
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uint64_t r10;
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uint64_t r11;
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uint64_t r12;
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uint64_t r13;
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uint64_t r14;
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uint64_t r15;
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uint64_t rbp;
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uint64_t rbx;
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uint64_t rax;
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uint64_t gs;
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uint64_t fs;
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uint64_t es;
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uint64_t ds;
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uint64_t trapno;
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uint64_t err;
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uint64_t rip;
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uint64_t cs;
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uint64_t rflags;
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uint64_t rsp;
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uint64_t ss;
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};
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int64_t __gregs[26];
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};
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int64_t _mc_tlsbase;
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struct FpuState __fpregs;
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};
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struct ucontext_netbsd {
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union {
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struct {
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uint32_t uc_flags; /* see _UC_* above */
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struct ucontext_netbsd *uc_link;
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struct sigset_netbsd uc_sigmask;
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struct stack_netbsd uc_stack;
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struct mcontext_netbsd uc_mcontext;
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};
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char __pad[__UCONTEXT_SIZE];
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};
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};
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_CALLS_STRUCT_UCONTEXT_NETBSD_INTERNAL_H_ */
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