--- auxil/spicy/3rdparty/fiber/CMakeLists.txt	2025-08-19 02:02:17.000000000 +0800
+++ auxil/spicy/3rdparty/fiber/CMakeLists.txt	2025-08-20 10:50:33.000000000 +0800
@@ -84,6 +84,10 @@
   set(asm_sources src/fiber_asm_riscv_elf.S)
 elseif(CMU_OS_POSIX AND CMU_ARCH_PPC AND FIBER_BITS_64 AND CMU_LITTLE_ENDIAN)
   set(asm_sources src/fiber_asm_ppc64le_elf2.S)
+#elseif(CMU_OS_POSIX AND CMU_ARCH_PPC AND FIBER_BITS_64)
+#  set(asm_sources src/fiber_asm_ppc64_mach.S)
+elseif(CMU_OS_POSIX AND CMU_ARCH_PPC AND FIBER_BITS_32)
+  set(asm_sources src/fiber_asm_ppc_mach.S)
 endif()
 
 if(CMU_COMP_MSVC)

--- auxil/spicy/3rdparty/fiber/src/fiber.c	2025-08-19 02:02:17.000000000 +0800
+++ auxil/spicy/3rdparty/fiber/src/fiber.c	2025-08-20 12:54:46.000000000 +0800
@@ -8,10 +8,16 @@
 #include <stdlib.h>
 #include <string.h>
 
+#ifdef __APPLE__
+#include <AvailabilityMacros.h>
+#endif
+
 #if HU_OS_POSIX_P
 #    include <sys/mman.h>
 #    include <unistd.h>
-#    if HU_C_11_P
+#    if defined(__APPLE__) && MAC_OS_X_VERSION_MIN_REQUIRED < 101300
+#        define USE_POSIX_MEMALIGN 1 /* No aligned_alloc on macOS < 10.13 */
+#    elif HU_C_11_P
 #        define ALIGNED_ALLOC aligned_alloc
 #    elif HU_OS_BSD_P || defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 200112L
 #        define USE_POSIX_MEMALIGN 1

--- auxil/spicy/3rdparty/fiber/include/fiber/fiber_mach.h	2025-08-19 02:02:17.000000000 +0800
+++ auxil/spicy/3rdparty/fiber/include/fiber/fiber_mach.h	2025-08-20 12:46:29.000000000 +0800
@@ -119,6 +119,19 @@
         double *f[18];        /* f14 - f31 */                                  \
         double *v[12 * 2 + 1] /* v20 - v31, adjusted to be 16 byte aligned */
 
+#elif HU_ARCH_PPC_P && HU_BITS_32_P
+#    define FIBER_TARGET_PPC_MACH 1
+#    define FIBER_DEFAULT_STACK_ALIGNMENT 16
+#    define FIBER_ARCH_REGS                                                    \
+        uint32_t cr;                                                           \
+        uint32_t vrsave;                                                       \
+        void *lr;            /* r0 */                                          \
+        void *sp;            /* r1 */                                          \
+        void *r[19];         /* r13 - r31 */                                   \
+        uint32_t __pad;      /* align f[] to 8 bytes */                        \
+        double f[18];        /* f14 - f31, 8 bytes each */                     \
+        double v[12 * 2 + 2] /* v20 - v31 + slack for 4-aligned struct base */
+
 #else
 #    error "fiber: system/architecture target not supported"
 #endif