[PATCH v5 13/17] xenctx: Add convert of more registers to symbols

[Don Slutz <dslutz@verizon.com>]

For example can change:
 gs: 0000 @ ffffffff803ac000/0000000000000000
to
 gs: 0000 @ ffffffff803ac000/0000000000000000 boot_cpu_pda/

Signed-off-by: Don Slutz <dslutz@verizon.com>
---
v5: Add reg_is_addr_mask.

 tools/xentrace/xenctx.c | 53 ++++++++++++++++++++++++++++++++++++++-----------
 1 file changed, 41 insertions(+), 12 deletions(-)

diff --git a/tools/xentrace/xenctx.c b/tools/xentrace/xenctx.c
index c574996..5dfa7e6 100644
--- a/tools/xentrace/xenctx.c
+++ b/tools/xentrace/xenctx.c
@@ -330,17 +330,29 @@ static void print_flags(uint64_t flags)
     printf("\n");
 }
 
-static void print_special(void *regs, const char *name, unsigned int mask, int width)
+static void print_special(void *regs, const char *name, unsigned int mask,
+                          uint64_t reg_is_addr_mask[], int width)
 {
     unsigned int i;
 
     printf("\n");
     for (i = 0; mask; mask >>= 1, ++i)
         if (mask & 1) {
-            if (width == 4)
-                printf("%s%u: %08"PRIx32"\n", name, i, ((uint32_t *) regs)[i]);
+            if ( width == 4 )
+            {
+                printf("%s%u: %08"PRIx32, name, i, ((uint32_t *) regs)[i]);
+                if ( reg_is_addr_mask[i] )
+                    print_symbol(reg_is_addr_mask[i] & ((uint32_t *) regs)[i],
+                                 KERNEL_DATA_ADDR);
+            }
             else
-                printf("%s%u: %08"PRIx64"\n", name, i, ((uint64_t *) regs)[i]);
+            {
+                printf("%s%u: %016"PRIx64, name, i, ((uint64_t *) regs)[i]);
+                if ( reg_is_addr_mask[i] )
+                    print_symbol(reg_is_addr_mask[i] & ((uint64_t *) regs)[i],
+                                 KERNEL_DATA_ADDR);
+            }
+            printf("\n");
         }
 }
 
@@ -368,8 +380,11 @@ static void print_ctx_32(vcpu_guest_context_x86_32_t *ctx)
     printf(" gs:     %04x\n", regs->gs);
 
     if (xenctx.disp_all) {
-        print_special(ctx->ctrlreg, "cr", 0x1d, 4);
-        print_special(ctx->debugreg, "dr", 0xcf, 4);
+        uint64_t cr_reg_mask[5] = {0, 0, ~0ULL};
+        uint64_t dr_reg_mask[8] = {~0ULL, ~0ULL, ~0ULL, ~0ULL};
+
+        print_special(ctx->ctrlreg, "cr", 0x1d, cr_reg_mask, 4);
+        print_special(ctx->debugreg, "dr", 0xcf, dr_reg_mask, 4);
     }
 }
 
@@ -397,8 +412,11 @@ static void print_ctx_32on64(vcpu_guest_context_x86_64_t *ctx)
     printf(" gs:     %04x\n", regs->gs);
 
     if (xenctx.disp_all) {
-        print_special(ctx->ctrlreg, "cr", 0x1d, 4);
-        print_special(ctx->debugreg, "dr", 0xcf, 4);
+        uint64_t cr_reg_mask[5] = {0, 0, ~0ULL};
+        uint64_t dr_reg_mask[8] = {~0ULL, ~0ULL, ~0ULL, ~0ULL};
+
+        print_special(ctx->ctrlreg, "cr", 0x1d, cr_reg_mask, 4);
+        print_special(ctx->debugreg, "dr", 0xcf, dr_reg_mask, 4);
     }
 }
 
@@ -436,13 +454,24 @@ static void print_ctx_64(vcpu_guest_context_x86_64_t *ctx)
     printf(" ds: %04x\t", regs->ds);
     printf(" es: %04x\n", regs->es);
 
-    printf(" fs: %04x @ %016"PRIx64"\n", regs->fs, ctx->fs_base);
-    printf(" gs: %04x @ %016"PRIx64"/%016"PRIx64"\n", regs->gs,
+    printf(" fs: %04x @ %016"PRIx64, regs->fs, ctx->fs_base);
+    print_symbol(ctx->fs_base, KERNEL_DATA_ADDR);
+    printf("\n");
+    printf(" gs: %04x @ %016"PRIx64"/%016"PRIx64, regs->gs,
            ctx->gs_base_kernel, ctx->gs_base_user);
+    if (symbol_table) {
+        print_symbol(ctx->gs_base_kernel, KERNEL_DATA_ADDR);
+        printf("/");
+        print_symbol(ctx->gs_base_user, KERNEL_DATA_ADDR);
+    }
+    printf("\n");
 
     if (xenctx.disp_all) {
-        print_special(ctx->ctrlreg, "cr", 0x1d, 8);
-        print_special(ctx->debugreg, "dr", 0xcf, 8);
+        uint64_t cr_reg_mask[5] = {0, 0, ~0ULL};
+        uint64_t dr_reg_mask[8] = {~0ULL, ~0ULL, ~0ULL, ~0ULL};
+
+        print_special(ctx->ctrlreg, "cr", 0x1d, cr_reg_mask, 8);
+        print_special(ctx->debugreg, "dr", 0xcf, dr_reg_mask, 8);
     }
 }
 
-- 
1.8.4