Contribution of PowerPC port.

src/flag-definitions.h

Index: src/flag-definitions.h
diff --git a/src/flag-definitions.h b/src/flag-definitions.h
index 3fc16fbef392c220a762c873bfa074c9056336ae..8b8c9817de6bd8ba89dca5e46d5408f587de17c0 100644
--- a/src/flag-definitions.h
+++ b/src/flag-definitions.h
@@ -376,7 +376,7 @@ DEFINE_BOOL(enable_32dregs, ENABLE_32DREGS_DEFAULT,
 DEFINE_BOOL(enable_vldr_imm, false,
             "enable use of constant pools for double immediate (ARM only)")
 DEFINE_BOOL(force_long_branches, false,
-            "force all emitted branches to be in long mode (MIPS only)")
+            "force all emitted branches to be in long mode (MIPS/PPC only)")
 
 // cpu-arm64.cc
 DEFINE_BOOL(enable_always_align_csp, true,
@@ -572,11 +572,13 @@ DEFINE_BOOL(trace_parse, false, "trace parsing and preparsing")
 
 // simulator-arm.cc, simulator-arm64.cc and simulator-mips.cc
 DEFINE_BOOL(trace_sim, false, "Trace simulator execution")
+DEFINE_BOOL(trace_sim_stubs, false, "Trace simulator execution w/ stub markers")

[danno, 2014/07/29 13:24:08]

This looks like new functionality not related to the PPC port? Please submit as
a separate patch.

[andrew_low, 2014/07/30 13:27:05]

Acknowledged.

 DEFINE_BOOL(debug_sim, false, "Enable debugging the simulator")
 DEFINE_BOOL(check_icache, false,
             "Check icache flushes in ARM and MIPS simulator")
 DEFINE_INT(stop_sim_at, 0, "Simulator stop after x number of instructions")
-#if defined(V8_TARGET_ARCH_ARM64) || defined(V8_TARGET_ARCH_MIPS64)
+#if defined(V8_TARGET_ARCH_ARM64) || defined(V8_TARGET_ARCH_MIPS64) || \
+    defined(V8_TARGET_ARCH_PPC64)
 DEFINE_INT(sim_stack_alignment, 16,
            "Stack alignment in bytes in simulator. This must be a power of two "
            "and it must be at least 16. 16 is default.")