[Qemu-devel] [PATCH 4/7] Add VSR to Global Registers

[Anton Blanchard <anton@samba.org>]

From: Tom Musta <tommusta@gmail.com>

This patch adds VSX VSRs to the the list of global register indices.
More specifically, it adds the lower halves of the first 32 VSRs to
the list of global register indices.  The upper halves of the first
32 VSRs are already defined via cpu_fpr[].  And the second 32 VSRs
are already defined via the cpu_avrh[] and cpu_avrl[] arrays.

Signed-off-by: Tom Musta <tommusta@gmail.com>
Signed-off-by: Anton Blanchard <anton@samba.org>
---

Index: b/target-ppc/translate.c
===================================================================
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -51,6 +51,7 @@ static char cpu_reg_names[10*3 + 22*4 /*
 #endif
     + 10*4 + 22*5 /* FPR */
     + 2*(10*6 + 22*7) /* AVRh, AVRl */
+    + 10*5 + 22*6 /* VSR */
     + 8*5 /* CRF */];
 static TCGv cpu_gpr[32];
 #if !defined(TARGET_PPC64)
@@ -58,6 +59,7 @@ static TCGv cpu_gprh[32];
 #endif
 static TCGv_i64 cpu_fpr[32];
 static TCGv_i64 cpu_avrh[32], cpu_avrl[32];
+static TCGv_i64 cpu_vsr[32];
 static TCGv_i32 cpu_crf[8];
 static TCGv cpu_nip;
 static TCGv cpu_msr;
@@ -137,6 +139,11 @@ void ppc_translate_init(void)
 #endif
         p += (i < 10) ? 6 : 7;
         cpu_reg_names_size -= (i < 10) ? 6 : 7;
+        snprintf(p, cpu_reg_names_size, "vsr%d", i);
+        cpu_vsr[i] = tcg_global_mem_new_i64(TCG_AREG0,
+                                             offsetof(CPUPPCState, vsr[i]), p);
+        p += (i < 10) ? 5 : 6;
+        cpu_reg_names_size -= (i < 10) ? 5 : 6;
     }
 
     cpu_nip = tcg_global_mem_new(TCG_AREG0,
@@ -6980,6 +6987,26 @@ GEN_VAFORM_PAIRED(vmsumshm, vmsumshs, 20
 GEN_VAFORM_PAIRED(vsel, vperm, 21)
 GEN_VAFORM_PAIRED(vmaddfp, vnmsubfp, 23)
 
+/***                           VSX extension                               ***/
+
+static inline TCGv_i64 cpu_vsrh(int n)
+{
+    if (n < 32) {
+        return cpu_fpr[n];
+    } else {
+        return cpu_avrh[n-32];
+    }
+}
+
+static inline TCGv_i64 cpu_vsrl(int n)
+{
+    if (n < 32) {
+        return cpu_vsr[n];
+    } else {
+        return cpu_avrl[n-32];
+    }
+}
+
 /***                           SPE extension                               ***/
 /* Register moves */