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Make considerably more progress on AARCH64

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- Utilities like pledge.com now build
- kprintf() will no longer balk at 48-bit addresses
- There's a new aarch64-dbg build mode that should work
- gc() and defer() are mostly pacified; avoid using them on aarch64
- THIRD_PART_STB now has Arm Neon intrinsics for fast image handling
This commit is contained in:
Justine Tunney 2023-05-12 22:42:57 -07:00
parent 1bfb3aab1b
commit fd34ef732d
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GPG key ID: BE714B4575D6E328
91 changed files with 1288 additions and 1192 deletions
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12
libc/calls/unveil.c
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@ -49,6 +49,12 @@
#include "libc/thread/tls.h"
#ifdef __x86_64__
#define ARCHITECTURE AUDIT_ARCH_X86_64
#elif defined(__aarch64__)
#define ARCHITECTURE AUDIT_ARCH_AARCH64
#else
#error "unsupported architecture"
#endif
#define OFF(f) offsetof(struct seccomp_data, f)
@ -70,7 +76,7 @@
static const struct sock_filter kUnveilBlacklistAbiVersionBelow3[] = {
BPF_STMT(BPF_LD | BPF_W | BPF_ABS, OFF(arch)),
BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, AUDIT_ARCH_X86_64, 1, 0),
BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, ARCHITECTURE, 1, 0),
BPF_STMT(BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS),
BPF_STMT(BPF_LD | BPF_W | BPF_ABS, OFF(nr)),
BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, __NR_linux_truncate, 1, 0),
@ -81,7 +87,7 @@ static const struct sock_filter kUnveilBlacklistAbiVersionBelow3[] = {
static const struct sock_filter kUnveilBlacklistLatestAbi[] = {
BPF_STMT(BPF_LD | BPF_W | BPF_ABS, OFF(arch)),
BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, AUDIT_ARCH_X86_64, 1, 0),
BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, ARCHITECTURE, 1, 0),
BPF_STMT(BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS),
BPF_STMT(BPF_LD | BPF_W | BPF_ABS, OFF(nr)),
BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, __NR_linux_setxattr, 0, 1),
@ -402,5 +408,3 @@ int unveil(const char *path, const char *permissions) {
STRACE("unveil(%#s, %#s) → %d% m", path, permissions, rc);
return rc;
}
#endif /* __x86_64__ */