Contribution of PowerPC port.

tools/gyp/v8.gyp

Index: tools/gyp/v8.gyp
diff --git a/tools/gyp/v8.gyp b/tools/gyp/v8.gyp
index d7afa3be4005be300eff1c434d24f86c7177ad4d..780c571ce9833866fba493a9ae6b23fe247bae2d 100644
--- a/tools/gyp/v8.gyp
+++ b/tools/gyp/v8.gyp
@@ -925,6 +925,40 @@
             '../../src/x64/stub-cache-x64.cc',
           ],
         }],
+        ['v8_target_arch=="ppc" or v8_target_arch=="ppc64"', {
+          'sources': [  ### gcmole(arch:ppc) ###
+            '../../src/ppc/assembler-ppc-inl.h',
+            '../../src/ppc/assembler-ppc.cc',
+            '../../src/ppc/assembler-ppc.h',
+            '../../src/ppc/builtins-ppc.cc',
+            '../../src/ppc/code-stubs-ppc.cc',
+            '../../src/ppc/code-stubs-ppc.h',
+            '../../src/ppc/codegen-ppc.cc',
+            '../../src/ppc/codegen-ppc.h',
+            '../../src/ppc/constants-ppc.h',
+            '../../src/ppc/constants-ppc.cc',
+            '../../src/ppc/cpu-ppc.cc',
+            '../../src/ppc/debug-ppc.cc',
+            '../../src/ppc/deoptimizer-ppc.cc',
+            '../../src/ppc/disasm-ppc.cc',
+            '../../src/ppc/frames-ppc.cc',
+            '../../src/ppc/frames-ppc.h',
+            '../../src/ppc/full-codegen-ppc.cc',
+            '../../src/ppc/ic-ppc.cc',
+            '../../src/ppc/lithium-ppc.cc',
+            '../../src/ppc/lithium-ppc.h',
+            '../../src/ppc/lithium-codegen-ppc.cc',
+            '../../src/ppc/lithium-codegen-ppc.h',
+            '../../src/ppc/lithium-gap-resolver-ppc.cc',
+            '../../src/ppc/lithium-gap-resolver-ppc.h',
+            '../../src/ppc/macro-assembler-ppc.cc',
+            '../../src/ppc/macro-assembler-ppc.h',
+            '../../src/ppc/regexp-macro-assembler-ppc.cc',
+            '../../src/ppc/regexp-macro-assembler-ppc.h',
+            '../../src/ppc/simulator-ppc.cc',
+            '../../src/ppc/stub-cache-ppc.cc',
+          ],
+        }],
         ['OS=="linux"', {
             'link_settings': {
               'conditions': [
@@ -999,6 +1033,7 @@
         '../../src/base/atomicops_internals_atomicword_compat.h',
         '../../src/base/atomicops_internals_mac.h',
         '../../src/base/atomicops_internals_mips_gcc.h',
+        '../../src/base/atomicops_internals_ppc_gcc.h',
         '../../src/base/atomicops_internals_tsan.h',
         '../../src/base/atomicops_internals_x86_gcc.cc',
         '../../src/base/atomicops_internals_x86_gcc.h',