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Introduce FreeBSD ARM64 support
It's 100% passing test fleet. Solid as a rock.
This commit is contained in:
Justine Tunney
parent
43fe5956ad
commit
83107f78ed
455 changed files with 778 additions and 551 deletions
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@ -16,8 +16,8 @@
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/struct/seccomp.internal.h"
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#include "libc/calls/calls.h"
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#include "libc/calls/struct/seccomp.internal.h"
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#include "libc/calls/syscall-sysv.internal.h"
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#include "libc/dce.h"
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#include "libc/errno.h"
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@ -62,16 +62,20 @@ int seccomp(unsigned operation, unsigned flags, void *args) {
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rc = -1;
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}
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#elif defined(__aarch64__)
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register long r0 asm("x0") = (long)operation;
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register long r1 asm("x1") = (long)flags;
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register long r2 asm("x2") = (long)args;
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register long res_x0 asm("x0");
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asm volatile("mov\tx8,%1\n\t"
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"svc\t0"
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: "=r"(res_x0)
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: "i"(211), "r"(r0), "r"(r1), "r"(r2)
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: "x8", "memory");
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rc = _sysret(res_x0);
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if (IsLinux()) {
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register long r0 asm("x0") = (long)operation;
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register long r1 asm("x1") = (long)flags;
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register long r2 asm("x2") = (long)args;
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register long res_x0 asm("x0");
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asm volatile("mov\tx8,%1\n\t"
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"svc\t0"
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: "=r"(res_x0)
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: "i"(211), "r"(r0), "r"(r1), "r"(r2)
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: "x8", "memory");
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rc = _sysret(res_x0);
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} else {
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rc = enosys();
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}
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#else
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#error "arch unsupported"
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#endif
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@ -20,6 +20,7 @@
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#include "libc/calls/calls.h"
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#include "libc/calls/internal.h"
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#include "libc/calls/state.internal.h"
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#include "libc/calls/struct/aarch64.internal.h"
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#include "libc/calls/struct/sigaction.h"
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#include "libc/calls/struct/siginfo-freebsd.internal.h"
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#include "libc/calls/struct/siginfo-meta.internal.h"
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@ -33,18 +34,18 @@
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#include "libc/str/str.h"
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#include "libc/sysv/consts/sa.h"
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#ifdef __x86_64__
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privileged void __sigenter_freebsd(int sig, struct siginfo_freebsd *freebsdinfo,
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struct ucontext_freebsd *ctx) {
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#pragma GCC push_options
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#pragma GCC diagnostic ignored "-Wframe-larger-than="
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struct Goodies {
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struct {
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ucontext_t uc;
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siginfo_t si;
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} g;
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CheckLargeStackAllocation(&g, sizeof(g));
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#pragma GCC pop_options
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int rva, flags;
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rva = __sighandrvas[sig];
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if (rva >= kSigactionMinRva) {
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@ -52,12 +53,20 @@ privileged void __sigenter_freebsd(int sig, struct siginfo_freebsd *freebsdinfo,
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if (~flags & SA_SIGINFO) {
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((sigaction_f)(__executable_start + rva))(sig, 0, 0);
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} else {
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//
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// TRANSLATE FREEBSD SIGNAL TO LINUX SIGNAL
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//
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__repstosb(&g, 0, sizeof(g));
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g.uc.uc_mcontext.fpregs = &g.uc.__fpustate;
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__siginfo2cosmo(&g.si, (void *)freebsdinfo);
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g.uc.uc_stack.ss_sp = ctx->uc_stack.ss_sp;
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g.uc.uc_stack.ss_size = ctx->uc_stack.ss_size;
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g.uc.uc_stack.ss_flags = ctx->uc_stack.ss_flags;
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g.uc.uc_sigmask = ctx->uc_sigmask[0] | (uint64_t)ctx->uc_sigmask[0] << 32;
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#ifdef __x86_64__
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g.uc.uc_mcontext.fpregs = &g.uc.__fpustate;
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g.uc.uc_mcontext.r8 = ctx->uc_mcontext.mc_r8;
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g.uc.uc_mcontext.r9 = ctx->uc_mcontext.mc_r9;
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g.uc.uc_mcontext.r10 = ctx->uc_mcontext.mc_r10;
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@ -81,14 +90,39 @@ privileged void __sigenter_freebsd(int sig, struct siginfo_freebsd *freebsdinfo,
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g.uc.uc_mcontext.err = ctx->uc_mcontext.mc_err;
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g.uc.uc_mcontext.trapno = ctx->uc_mcontext.mc_trapno;
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__repmovsb(&g.uc.__fpustate, &ctx->uc_mcontext.mc_fpstate, 512);
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__siginfo2cosmo(&g.si, (void *)freebsdinfo);
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#endif /* __x86_64__ */
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#ifdef __aarch64__
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__memcpy(g.uc.uc_mcontext.regs, &ctx->uc_mcontext.mc_gpregs, 34 * 8);
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if (ctx->uc_mcontext.mc_flags & _MC_FP_VALID) {
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struct fpsimd_context *vc =
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(struct fpsimd_context *)g.uc.uc_mcontext.__reserved;
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vc->head.magic = FPSIMD_MAGIC;
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vc->head.size = sizeof(*vc);
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vc->fpsr = ctx->uc_mcontext.mc_fpregs.fp_sr;
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vc->fpcr = ctx->uc_mcontext.mc_fpregs.fp_cr;
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__memcpy(vc->vregs, ctx->uc_mcontext.mc_fpregs.fp_q, 32 * 16);
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}
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#endif /* __aarch64__ */
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//
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// INVOKE SIGNAL HANDLER
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//
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((sigaction_f)(__executable_start + rva))(sig, &g.si, &g.uc);
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//
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// TRANSLATE LINUX SIGNAL TO FREEBSD SIGNAL
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//
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ctx->uc_stack.ss_sp = g.uc.uc_stack.ss_sp;
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ctx->uc_stack.ss_size = g.uc.uc_stack.ss_size;
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ctx->uc_stack.ss_flags = g.uc.uc_stack.ss_flags;
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ctx->uc_flags = g.uc.uc_flags;
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ctx->uc_sigmask[0] = g.uc.uc_sigmask;
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ctx->uc_sigmask[1] = g.uc.uc_sigmask >> 32;
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#ifdef __x86_64__
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ctx->uc_mcontext.mc_rdi = g.uc.uc_mcontext.rdi;
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ctx->uc_mcontext.mc_rsi = g.uc.uc_mcontext.rsi;
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ctx->uc_mcontext.mc_rdx = g.uc.uc_mcontext.rdx;
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@ -112,13 +146,24 @@ privileged void __sigenter_freebsd(int sig, struct siginfo_freebsd *freebsdinfo,
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ctx->uc_mcontext.mc_rip = g.uc.uc_mcontext.rip;
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ctx->uc_mcontext.mc_rsp = g.uc.uc_mcontext.rsp;
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__repmovsb(&ctx->uc_mcontext.mc_fpstate, &g.uc.__fpustate, 512);
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#endif /* __x86_64__ */
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#ifdef __aarch64__
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__memcpy(&ctx->uc_mcontext.mc_gpregs, g.uc.uc_mcontext.regs, 34 * 8);
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struct fpsimd_context *vc =
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(struct fpsimd_context *)g.uc.uc_mcontext.__reserved;
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if (vc->head.magic == FPSIMD_MAGIC) {
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ctx->uc_mcontext.mc_flags |= _MC_FP_VALID;
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ctx->uc_mcontext.mc_fpregs.fp_sr = vc->fpsr;
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ctx->uc_mcontext.mc_fpregs.fp_cr = vc->fpcr;
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__memcpy(ctx->uc_mcontext.mc_fpregs.fp_q, vc->vregs, 32 * 16);
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}
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#endif /* __aarch64__ */
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// done
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}
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}
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/*
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* When the FreeBSD kernel invokes this signal handler it pushes a
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* trampoline on the stack which does two things: 1) it calls this
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* function, and 2) calls sys_sigreturn() once this returns.
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*/
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// When the FreeBSD kernel invokes this signal handler it pushes a
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// trampoline on the stack which does two things: 1) it calls this
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// function, and 2) calls sys_sigreturn() once this returns.
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}
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#endif /* __x86_64__ */
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@ -2,6 +2,22 @@
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#define COSMOPOLITAN_LIBC_CALLS_STRUCT_UCONTEXT_FREEBSD_INTERNAL_H_
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COSMOPOLITAN_C_START_
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struct gpregs_freebsd_aarch64 {
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int64_t gp_x[30];
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int64_t gp_lr;
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int64_t gp_sp;
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int64_t gp_elr; /* pc */
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uint64_t gp_spsr; /* pstate or cpsr */
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};
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struct fpregs_freebsd_aarch64 {
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uint128_t fp_q[32];
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uint32_t fp_sr;
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uint32_t fp_cr;
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int fp_flags;
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int fp_pad;
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};
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struct stack_freebsd {
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void *ss_sp;
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uint64_t ss_size;
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@ -9,6 +25,7 @@ struct stack_freebsd {
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};
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struct mcontext_freebsd {
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#ifdef __x86_64__
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int64_t mc_onstack;
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int64_t mc_rdi;
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int64_t mc_rsi;
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@ -47,6 +64,14 @@ struct mcontext_freebsd {
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int64_t mc_xfpustate;
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int64_t mc_xfpustate_len;
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int64_t mc_spare[4];
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#elif defined(__aarch64__)
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struct gpregs_freebsd_aarch64 mc_gpregs;
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struct fpregs_freebsd_aarch64 mc_fpregs;
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int mc_flags;
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#define _MC_FP_VALID 0x1 /* Set when mc_fpregs has valid data */
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int mc_pad; /* Padding */
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uint64_t mc_spare[8]; /* Space for expansion, set to zero */
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#endif
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};
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struct ucontext_freebsd {
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