aarch64: morello: update sysdep.h for purecap ABI

Add macro definitions for purecap ABI in sysdep.h.

diff --git a/sysdeps/aarch64/sysdep.h b/sysdeps/aarch64/sysdep.h
index 5c8e6d50c2b31e8e074951c746a0fd83d4f9eb04..6575503c8b65e27420c4e4ccc13e73a66f8b672c 100644 (file)
--- a/sysdeps/aarch64/sysdep.h
+++ b/sysdeps/aarch64/sysdep.h
@@ -21,12 +21,19 @@
 
 #include <sysdeps/generic/sysdep.h>
 
-#ifdef __LP64__
+#if defined __LP64__ || defined __CHERI_PURE_CAPABILITY__
 # define AARCH64_R(NAME)       R_AARCH64_ ## NAME
 # define PTR_REG(n)            x##n
 # define PTR_LOG_SIZE          3
 # define PTR_ARG(n)
 # define SIZE_ARG(n)
+# ifdef __CHERI_PURE_CAPABILITY__
+#  define MORELLO_R(NAME)      R_MORELLO_ ## NAME
+#  undef PTR_REG
+#  define PTR_REG(n)           c##n
+#  undef PTR_LOG_SIZE
+#  define PTR_LOG_SIZE         4
+# endif
 #else
 # define AARCH64_R(NAME)       R_AARCH64_P32_ ## NAME
 # define PTR_REG(n)            w##n
@@ -145,6 +152,9 @@ GNU_PROPERTY (FEATURE_1_AND, FEATURE_1_BTI)
 
 /* If compiled for profiling, call `mcount' at the start of each function.  */
 #ifdef PROF
+# ifdef __CHERI_PURE_CAPABILITY__
+#  error mcount profiling is not supported with purecap ABI
+# endif
 # define CALL_MCOUNT                                           \
        str     x30, [sp, #-80]!;                               \
        cfi_adjust_cfa_offset (80);                             \
@@ -200,9 +210,15 @@ GNU_PROPERTY (FEATURE_1_AND, FEATURE_1_BTI)
        ldr     PTR_REG (T), [x##T, #:got_lo12:EXPR];   \
        OP      PTR_REG (R), [x##T];
 
+#ifdef __CHERI_PURE_CAPABILITY__
+/* These are not used in purecap asm.  */
+# undef LDST_PCREL
+# undef LDST_GLOBAL
+#endif
+
 /* Load an immediate into R.
    Note R is a register number and not a register name.  */
-#ifdef __LP64__
+#if defined __LP64__ || defined __CHERI_PURE_CAPABILITY__
 # define MOVL(R, NAME)                                 \
        movz    x##R, #:abs_g3:NAME;                    \
        movk    x##R, #:abs_g2_nc:NAME;                 \