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--- mono/utils/mono-sigcontext.h.orig 2021-10-05 20:43:22.170433000 +0200
+++ mono/utils/mono-sigcontext.h 2021-10-05 20:43:36.848022000 +0200
@@ -363,10 +363,10 @@
#elif defined(__FreeBSD__)
typedef ucontext_t os_ucontext;
- #define UCONTEXT_REG_Rn(ctx, n) ((ctx)->uc_mcontext.mc_gpr [(n)])
- #define UCONTEXT_REG_FPRn(ctx, n) ((ctx)->uc_mcontext.mc_fpreg [(n)])
- #define UCONTEXT_REG_NIP(ctx) ((ctx)->uc_mcontext.mc_srr0)
- #define UCONTEXT_REG_LNK(ctx) ((ctx)->uc_mcontext.mc_lr)
+ #define UCONTEXT_REG_Rn(ctx, n) (((os_ucontext*)(ctx))->uc_mcontext.mc_gpr [(n)])
+ #define UCONTEXT_REG_FPRn(ctx, n) (((os_ucontext*)(ctx))->uc_mcontext.mc_fpreg [(n)])
+ #define UCONTEXT_REG_NIP(ctx) (((os_ucontext*)(ctx))->uc_mcontext.mc_srr0)
+ #define UCONTEXT_REG_LNK(ctx) (((os_ucontext*)(ctx))->uc_mcontext.mc_lr)
#endif
#elif defined(TARGET_ARM)
@@ -460,6 +460,13 @@ typedef struct ucontext {
#define UCONTEXT_REG_SP(ctx) (((ucontext64_t*)(ctx))->uc_mcontext64->__ss.__sp)
#define UCONTEXT_REG_R0(ctx) (((ucontext64_t*)(ctx))->uc_mcontext64->__ss.__x [ARMREG_R0])
#define UCONTEXT_GREGS(ctx) (&(((ucontext64_t*)(ctx))->uc_mcontext64->__ss.__x))
+#elif defined(__FreeBSD__)
+#include <ucontext.h>
+ /* https://lists.freebsd.org/pipermail/freebsd-arm/2017-February/015611.html */
+ #define UCONTEXT_REG_PC(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_gpregs.gp_elr)
+ #define UCONTEXT_REG_SP(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_gpregs.gp_sp)
+ #define UCONTEXT_REG_R0(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_gpregs.gp_x [ARMREG_R0])
+ #define UCONTEXT_GREGS(ctx) (&(((ucontext_t*)(ctx))->uc_mcontext.mc_gpregs.gp_x))
#else
#include <ucontext.h>
#define UCONTEXT_REG_PC(ctx) (((ucontext_t*)(ctx))->uc_mcontext.pc)
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