| ... | ... | @@ -40,6 +40,26 @@ pub fn fromPosixSignalContext(ctx_ptr: ?*const anyopaque) ?Native { |
| 40 | 40 | }, |
| 41 | 41 | .pc = @truncate(uc.mcontext.pc), |
| 42 | 42 | }; |
| 43 | } else if (native_arch.isSPARC() and native_os == .linux) { |
| 44 | const SparcStackFrame = extern struct { |
| 45 | l: [8]usize, |
| 46 | i: [8]usize, |
| 47 | _x: [8]usize, |
| 48 | }; |
| 49 | |
| 50 | // When invoking a signal handler, the kernel builds an `rt_signal_frame` structure on the |
| 51 | // stack and passes a pointer to its `info` field to the signal handler. This implies that |
| 52 | // prior to said `info` field, we will find the `ss` field which, among other things, |
| 53 | // contains the incoming and local registers of the interrupted code. |
| 54 | const frame = @as(*const SparcStackFrame, @ptrFromInt(@as(usize, @intFromPtr(ctx_ptr)) - @sizeOf(SparcStackFrame))); |
| 55 | |
| 56 | return .{ |
| 57 | .g = uc.mcontext.g, |
| 58 | .o = uc.mcontext.o, |
| 59 | .l = frame.l, |
| 60 | .i = frame.i, |
| 61 | .pc = uc.mcontext.pc, |
| 62 | }; |
| 43 | 63 | } |
| 44 | 64 | |
| 45 | 65 | // Only unified conversions from here. |
| ... | ... | @@ -1370,9 +1390,32 @@ const signal_ucontext_t = switch (native_os) { |
| 1370 | 1390 | lr: u32, |
| 1371 | 1391 | }, |
| 1372 | 1392 | }, |
| 1373 | | // https://github.com/torvalds/linux/blob/cd5a0afbdf8033dc83786315d63f8b325bdba2fd/arch/sparc/include/uapi/asm/uctx.h |
| 1374 | | .sparc => @compileError("sparc-linux ucontext_t missing"), |
| 1375 | | .sparc64 => @compileError("sparc64-linux ucontext_t missing"), |
| 1393 | // https://github.com/torvalds/linux/blob/cd5a0afbdf8033dc83786315d63f8b325bdba2fd/arch/sparc/kernel/signal_32.c#L48-L49 |
| 1394 | .sparc => extern struct { |
| 1395 | // Not actually a `ucontext_t` at all because, uh, reasons? |
| 1396 | |
| 1397 | _info: std.os.linux.siginfo_t, |
| 1398 | mcontext: extern struct { |
| 1399 | _psr: u32, |
| 1400 | pc: u32, |
| 1401 | _npc: u32, |
| 1402 | _y: u32, |
| 1403 | g: [8]u32, |
| 1404 | o: [8]u32, |
| 1405 | }, |
| 1406 | }, |
| 1407 | // https://github.com/torvalds/linux/blob/cd5a0afbdf8033dc83786315d63f8b325bdba2fd/arch/sparc/kernel/signal_64.c#L247-L248 |
| 1408 | .sparc64 => extern struct { |
| 1409 | // Ditto... |
| 1410 | |
| 1411 | _info: std.os.linux.siginfo_t, |
| 1412 | mcontext: extern struct { |
| 1413 | g: [8]u64, |
| 1414 | o: [8]u64, |
| 1415 | _tstate: u64, |
| 1416 | pc: u64, |
| 1417 | }, |
| 1418 | }, |
| 1376 | 1419 | else => unreachable, |
| 1377 | 1420 | }, |
| 1378 | 1421 | // https://github.com/freebsd/freebsd-src/blob/55c28005f544282b984ae0e15dacd0c108d8ab12/sys/sys/_ucontext.h |
| ... | ... | @@ -1497,14 +1540,14 @@ const signal_ucontext_t = switch (native_os) { |
| 1497 | 1540 | }, |
| 1498 | 1541 | }, |
| 1499 | 1542 | // This needs to be audited by someone with access to the Solaris headers. |
| 1500 | | .solaris => extern struct { |
| 1501 | | _flags: u64, |
| 1502 | | _link: ?*signal_ucontext_t, |
| 1503 | | _sigmask: std.c.sigset_t, |
| 1504 | | _stack: std.c.stack_t, |
| 1505 | | mcontext: switch (native_arch) { |
| 1506 | | .sparc64 => @compileError("sparc64-solaris mcontext_t missing"), |
| 1507 | | .x86_64 => extern struct { |
| 1543 | .solaris => switch (native_arch) { |
| 1544 | .sparc64 => @compileError("sparc64-solaris ucontext_t missing"), |
| 1545 | .x86_64 => extern struct { |
| 1546 | _flags: u64, |
| 1547 | _link: ?*signal_ucontext_t, |
| 1548 | _sigmask: std.c.sigset_t, |
| 1549 | _stack: std.c.stack_t, |
| 1550 | mcontext: extern struct { |
| 1508 | 1551 | r15: u64, |
| 1509 | 1552 | r14: u64, |
| 1510 | 1553 | r13: u64, |
| ... | ... | @@ -1524,8 +1567,8 @@ const signal_ucontext_t = switch (native_os) { |
| 1524 | 1567 | _err: i64, |
| 1525 | 1568 | rip: u64, |
| 1526 | 1569 | }, |
| 1527 | | else => unreachable, |
| 1528 | 1570 | }, |
| 1571 | else => unreachable, |
| 1529 | 1572 | }, |
| 1530 | 1573 | // https://github.com/illumos/illumos-gate/blob/d4ce137bba3bd16823db6374d9e9a643264ce245/usr/src/uts/intel/sys/ucontext.h |
| 1531 | 1574 | .illumos => extern struct { |
| ... | ... | @@ -1637,7 +1680,7 @@ const signal_ucontext_t = switch (native_os) { |
| 1637 | 1680 | }, |
| 1638 | 1681 | }, |
| 1639 | 1682 | // https://github.com/openbsd/src/blob/42468faed8369d07ae49ae02dd71ec34f59b66cd/sys/arch/sparc64/include/signal.h |
| 1640 | | .sparc64 => @compileError("sparc64-openbsd mcontext_t missing"), |
| 1683 | .sparc64 => @compileError("sparc64-openbsd ucontext_t missing"), |
| 1641 | 1684 | // https://github.com/openbsd/src/blob/42468faed8369d07ae49ae02dd71ec34f59b66cd/sys/arch/i386/include/signal.h |
| 1642 | 1685 | .x86 => extern struct { |
| 1643 | 1686 | mcontext: extern struct { |
Alex Rønne Petersen <alex@alexrp.com> 2025-10-14 09:44:42+02:00