Fail to build from source (aarch64-freebsd14.0)

[bregma]

Code fails to build from source.

$ uname -psr
FreeBSD 14.0-CURRENT aarch64c
$ grep 'host=' config.status
host='aarch64-unknown-freebsd14.0'

First error

--- os-freebsd.lo ---
../../src/os-freebsd.c:144:75: error: expected ';' after expression
       ret = strlen (kv->kve_path) >= pathlen ? -UNW_ENOMEM : UNW_ESUCCESS:;
                                                                          ^
                                                                          ;

Second error

../../src/mi/backtrace.c:72:7: error: no member named 'mc_gpregs' in 'struct __mcontext'
      unw_getcontext (&uc);
      ^~~~~~~~~~~~~~~~~~~~
../include/libunwind-common.h:127:29: note: expanded from macro 'unw_getcontext'
#define unw_getcontext(uc)              unw_tdep_getcontext(uc)
                                        ^~~~~~~~~~~~~~~~~~~~~~~
../../include/libunwind-aarch64.h:251:3: note: expanded from macro 'unw_tdep_getcontext'
  UNW_BASE \
  ^~~~~~~~
../../include/libunwind-aarch64.h:242:95: note: expanded from macro 'UNW_BASE'
# define UNW_BASE register uint64_t unw_base __asm__ ("x0") = (uint64_t) unw_ctx->uc_mcontext.mc_gpregs.gp_x;
                                                                         ~~~~~~~~~~~~~~~~~~~~ ^

Third error

--- aarch64/Los-freebsd.lo ---
In file included from ../../src/aarch64/Los-freebsd.c:4:
In file included from ../../src/aarch64/Gos-freebsd.c:33:
In file included from ../../src/aarch64/unwind_i.h:33:
../../include/libunwind_i.h:240:12: warning: cast from provenance-free integer type to pointer type will give pointer that can not be dereferenced [-Wcheri-capability-misuse]
    return (void *)ret;
           ^
In file included from ../../src/aarch64/Los-freebsd.c:4:
In file included from ../../src/aarch64/Gos-freebsd.c:33:
In file included from ../../src/aarch64/unwind_i.h:33:
In file included from ../../include/libunwind_i.h:422:
In file included from ../include/tdep/libunwind_i.h:7:
../../include/tdep-aarch64/libunwind_i.h:138:11: warning: cast from provenance-free integer type to pointer type will give pointer that can not be dereferenced [-Wcheri-capability-misuse]
  *val = *(unw_fpreg_t *) DWARF_GET_LOC (loc);
          ^
../../include/tdep-aarch64/libunwind_i.h:147:4: warning: cast from provenance-free integer type to pointer type will give pointer that can not be dereferenced [-Wcheri-capability-misuse]
  *(unw_fpreg_t *) DWARF_GET_LOC (loc) = val;
   ^
../../include/tdep-aarch64/libunwind_i.h:156:11: warning: cast from provenance-free integer type to pointer type will give pointer that can not be dereferenced [-Wcheri-capability-misuse]
  *val = *(unw_word_t *) DWARF_GET_LOC (loc);
          ^
../../include/tdep-aarch64/libunwind_i.h:165:4: warning: cast from provenance-free integer type to pointer type will give pointer that can not be dereferenced [-Wcheri-capability-misuse]
  *(unw_word_t *) DWARF_GET_LOC (loc) = val;
   ^
In file included from ../../src/aarch64/Los-freebsd.c:4:
../../src/aarch64/Gos-freebsd.c:53:24: warning: cast from provenance-free integer type to pointer type will give pointer that can not be dereferenced [-Wcheri-capability-misuse]
      ucontext_t *uc = (ucontext_t *)(c->sigcontext_sp + offsetof(struct sigframe, sf_uc));
                       ^
../../src/aarch64/Gos-freebsd.c:56:25: error: no member named 'mc_gpregs' in 'struct __mcontext'
        uc->uc_mcontext.mc_gpregs.gp_x[0] = c->dwarf.eh_args[0];
        ~~~~~~~~~~~~~~~ ^
../../src/aarch64/Gos-freebsd.c:58:25: error: no member named 'mc_gpregs' in 'struct __mcontext'
        uc->uc_mcontext.mc_gpregs.gp_x[1] = c->dwarf.eh_args[1];
        ~~~~~~~~~~~~~~~ ^
../../src/aarch64/Gos-freebsd.c:60:25: error: no member named 'mc_gpregs' in 'struct __mcontext'
        uc->uc_mcontext.mc_gpregs.gp_x[2] = c->dwarf.eh_args[2];
        ~~~~~~~~~~~~~~~ ^
6 warnings and 3 errors generated.

Fourth error

--- aarch64/setcontext.lo ---
../../src/aarch64/setcontext.S:39:15: error: invalid operand for instruction
 ldp x0, x1, [x9, #(0x10 + 0x00)]
              ^
../../src/aarch64/setcontext.S:40:15: error: invalid operand for instruction
 ldp x2, x3, [x9, #(0x10 + 0x00 + 2 * 8)]
              ^
../../src/aarch64/setcontext.S:41:17: error: invalid operand for instruction
 ldp x19, x20, [x9, #(0x10 + 0x00 + 19 * 8)]
                ^
../../src/aarch64/setcontext.S:42:17: error: invalid operand for instruction
 ldp x21, x22, [x9, #(0x10 + 0x00 + 21 * 8)]
                ^
../../src/aarch64/setcontext.S:43:17: error: invalid operand for instruction
 ldp x23, x24, [x9, #(0x10 + 0x00 + 23 * 8)]
                ^
../../src/aarch64/setcontext.S:44:17: error: invalid operand for instruction
 ldp x25, x26, [x9, #(0x10 + 0x00 + 25 * 8)]
                ^
../../src/aarch64/setcontext.S:45:17: error: invalid operand for instruction
 ldp x27, x28, [x9, #(0x10 + 0x00 + 27 * 8)]
                ^
../../src/aarch64/setcontext.S:46:17: error: invalid operand for instruction
 ldp x29, x30, [x9, #(0x10 + 0x00 + 29 * 8)]
                ^
../../src/aarch64/setcontext.S:48:15: error: invalid operand for instruction
 ldp q8, q9, [x9, #(0x10 + 0x110 + 8 * 16)]
              ^
../../src/aarch64/setcontext.S:49:17: error: invalid operand for instruction
 ldp q10, q11, [x9, #(0x10 + 0x110 + 10 * 16)]
                ^
../../src/aarch64/setcontext.S:50:17: error: invalid operand for instruction
 ldp q12, q13, [x9, #(0x10 + 0x110 + 12 * 16)]
                ^
../../src/aarch64/setcontext.S:51:17: error: invalid operand for instruction
 ldp q14, q15, [x9, #(0x10 + 0x110 + 14 * 16)]
                ^

make.log

[lemul]

#687 fixes this too

[ararslan]

Is this issue still relevant? I haven't tried FreeBSD 14.0 but I'm able to build current libunwind master on aarch64-unknown-freebsd14.1 without issue. I get a few warnings, but no errors:

• aarch64/Gstep.c:719:40: warning: implicit truncation from 'int' to a one-bit wide bit-field changes value from 1 to -1 [-Wsingle-bit-bitfield-constant-conversion]
• coredump/_UPT_get_dyn_info_list_addr.c:86:3: warning: Implement get_list_addr(), please. [-W#warnings]
• ./Gtest-nomalloc.c:49:16: warning: passing arguments to a function without a prototype is deprecated in all versions of C and is not supported in C23 [-Wdeprecated-non-prototype]

Most tests pass as well, except for G/Larm64-test-sve-signal (skipped) and check-namespace.sh (fails).

[bregma]

I do not believe this problem applies any more. Closing.