[binutils-gdb] Add SVE register defines

[Alan Hayward <alahay01 at sourceware dot org>]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=739e8682ff1cffc2809c91853efeef232d29e582

commit 739e8682ff1cffc2809c91853efeef232d29e582
Author: Alan Hayward <alan.hayward@arm.com>
Date:   Fri Jun 1 16:02:37 2018 +0100

    Add SVE register defines
    
    In order to prevent gaps in the register numbering, the Z registers
    reuse the V register numbers (which become pseudos on SVE).
    
    2018-06-01  Alan Hayward  <alan.hayward@arm.com>
    
    	* aarch64-tdep.c (aarch64_sve_register_names): New const
    	var.
    	* arch/aarch64.h (enum aarch64_regnum): Add SVE entries.
    	(AARCH64_SVE_Z_REGS_NUM): New define.
    	(AARCH64_SVE_P_REGS_NUM): Likewise.
    	(AARCH64_SVE_NUM_REGS): Likewise.

Diff:
---
 gdb/ChangeLog      |  9 +++++++++
 gdb/aarch64-tdep.c | 21 +++++++++++++++++++++
 gdb/arch/aarch64.h | 15 ++++++++++++++-
 3 files changed, 44 insertions(+), 1 deletion(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 8af7e67..37656ad 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,12 @@
+2018-06-01  Alan Hayward  <alan.hayward@arm.com>
+
+	* aarch64-tdep.c (aarch64_sve_register_names): New const
+	var.
+	* arch/aarch64.h (enum aarch64_regnum): Add SVE entries.
+	(AARCH64_SVE_Z_REGS_NUM): New define.
+	(AARCH64_SVE_P_REGS_NUM): Likewise.
+	(AARCH64_SVE_NUM_REGS): Likewise.
+
 2018-05-31  Uros Bizjak  <ubizjak@gmail.com>
 
 	* nat/linux-ptrace.h [__alpha__]
diff --git a/gdb/aarch64-tdep.c b/gdb/aarch64-tdep.c
index 793b42a..1cd2015 100644
--- a/gdb/aarch64-tdep.c
+++ b/gdb/aarch64-tdep.c
@@ -156,6 +156,27 @@ static const char *const aarch64_v_register_names[] =
   "fpcr"
 };
 
+/* The SVE 'Z' and 'P' registers.  */
+static const char *const aarch64_sve_register_names[] =
+{
+  /* These registers must appear in consecutive RAW register number
+     order and they must begin with AARCH64_SVE_Z0_REGNUM! */
+  "z0", "z1", "z2", "z3",
+  "z4", "z5", "z6", "z7",
+  "z8", "z9", "z10", "z11",
+  "z12", "z13", "z14", "z15",
+  "z16", "z17", "z18", "z19",
+  "z20", "z21", "z22", "z23",
+  "z24", "z25", "z26", "z27",
+  "z28", "z29", "z30", "z31",
+  "fpsr", "fpcr",
+  "p0", "p1", "p2", "p3",
+  "p4", "p5", "p6", "p7",
+  "p8", "p9", "p10", "p11",
+  "p12", "p13", "p14", "p15",
+  "ffr", "vg"
+};
+
 /* AArch64 prologue cache structure.  */
 struct aarch64_prologue_cache
 {
diff --git a/gdb/arch/aarch64.h b/gdb/arch/aarch64.h
index 2f80a29..30f5360 100644
--- a/gdb/arch/aarch64.h
+++ b/gdb/arch/aarch64.h
@@ -28,7 +28,9 @@
 
 target_desc *aarch64_create_target_description (long vq);
 
-/* Register numbers of various important registers.  */
+/* Register numbers of various important registers.
+   Note that on SVE, the Z registers reuse the V register numbers and the V
+   registers become pseudo registers.  */
 enum aarch64_regnum
 {
   AARCH64_X0_REGNUM,		/* First integer register.  */
@@ -39,8 +41,15 @@ enum aarch64_regnum
   AARCH64_CPSR_REGNUM,		/* Current Program Status Register.  */
   AARCH64_V0_REGNUM,		/* First fp/vec register.  */
   AARCH64_V31_REGNUM = AARCH64_V0_REGNUM + 31,	/* Last fp/vec register.  */
+  AARCH64_SVE_Z0_REGNUM = AARCH64_V0_REGNUM,	/* First SVE Z register.  */
+  AARCH64_SVE_Z31_REGNUM = AARCH64_V31_REGNUM,  /* Last SVE Z register.  */
   AARCH64_FPSR_REGNUM,		/* Floating Point Status Register.  */
   AARCH64_FPCR_REGNUM,		/* Floating Point Control Register.  */
+  AARCH64_SVE_P0_REGNUM,	/* First SVE predicate register.  */
+  AARCH64_SVE_P15_REGNUM = AARCH64_SVE_P0_REGNUM + 15,	/* Last SVE predicate
+							   register.  */
+  AARCH64_SVE_FFR_REGNUM,	/* SVE First Fault Register.  */
+  AARCH64_SVE_VG_REGNUM,	/* SVE Vector Gradient.  */
 
   /* Other useful registers.  */
   AARCH64_LAST_X_ARG_REGNUM = AARCH64_X0_REGNUM + 7,
@@ -50,7 +59,11 @@ enum aarch64_regnum
 
 #define AARCH64_X_REGS_NUM 31
 #define AARCH64_V_REGS_NUM 32
+#define AARCH64_SVE_Z_REGS_NUM AARCH64_V_REGS_NUM
+#define AARCH64_SVE_P_REGS_NUM 16
 #define AARCH64_NUM_REGS AARCH64_FPCR_REGNUM + 1
+#define AARCH64_SVE_NUM_REGS AARCH64_SVE_VG_REGNUM + 1
+
 
 /* There are a number of ways of expressing the current SVE vector size: