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-rw-r--r--Build/source/libs/luajit/LuaJIT-src/src/lj_gdbjit.c32
1 files changed, 31 insertions, 1 deletions
diff --git a/Build/source/libs/luajit/LuaJIT-src/src/lj_gdbjit.c b/Build/source/libs/luajit/LuaJIT-src/src/lj_gdbjit.c
index f2bd865e600..c219ffac0a8 100644
--- a/Build/source/libs/luajit/LuaJIT-src/src/lj_gdbjit.c
+++ b/Build/source/libs/luajit/LuaJIT-src/src/lj_gdbjit.c
@@ -1,6 +1,6 @@
/*
** Client for the GDB JIT API.
-** Copyright (C) 2005-2016 Mike Pall. See Copyright Notice in luajit.h
+** Copyright (C) 2005-2017 Mike Pall. See Copyright Notice in luajit.h
*/
#define lj_gdbjit_c
@@ -296,6 +296,9 @@ enum {
#elif LJ_TARGET_ARM
DW_REG_SP = 13,
DW_REG_RA = 14,
+#elif LJ_TARGET_ARM64
+ DW_REG_SP = 31,
+ DW_REG_RA = 30,
#elif LJ_TARGET_PPC
DW_REG_SP = 1,
DW_REG_RA = 65,
@@ -374,6 +377,8 @@ static const ELFheader elfhdr_template = {
.machine = 62,
#elif LJ_TARGET_ARM
.machine = 40,
+#elif LJ_TARGET_ARM64
+ .machine = 183,
#elif LJ_TARGET_PPC
.machine = 20,
#elif LJ_TARGET_MIPS
@@ -563,6 +568,13 @@ static void LJ_FASTCALL gdbjit_ehframe(GDBJITctx *ctx)
int i;
for (i = 11; i >= 4; i--) { DB(DW_CFA_offset|i); DUV(2+(11-i)); }
}
+#elif LJ_TARGET_ARM64
+ {
+ int i;
+ DB(DW_CFA_offset|31); DUV(2);
+ for (i = 28; i >= 19; i--) { DB(DW_CFA_offset|i); DUV(3+(28-i)); }
+ for (i = 15; i >= 8; i--) { DB(DW_CFA_offset|32|i); DUV(28-i); }
+ }
#elif LJ_TARGET_PPC
{
int i;
@@ -719,6 +731,20 @@ static void gdbjit_buildobj(GDBJITctx *ctx)
/* -- Interface to GDB JIT API -------------------------------------------- */
+static int gdbjit_lock;
+
+static void gdbjit_lock_acquire()
+{
+ while (__sync_lock_test_and_set(&gdbjit_lock, 1)) {
+ /* Just spin; futexes or pthreads aren't worth the portability cost. */
+ }
+}
+
+static void gdbjit_lock_release()
+{
+ __sync_lock_release(&gdbjit_lock);
+}
+
/* Add new entry to GDB JIT symbol chain. */
static void gdbjit_newentry(lua_State *L, GDBJITctx *ctx)
{
@@ -730,6 +756,7 @@ static void gdbjit_newentry(lua_State *L, GDBJITctx *ctx)
ctx->T->gdbjit_entry = (void *)eo;
/* Link new entry to chain and register it. */
eo->entry.prev_entry = NULL;
+ gdbjit_lock_acquire();
eo->entry.next_entry = __jit_debug_descriptor.first_entry;
if (eo->entry.next_entry)
eo->entry.next_entry->prev_entry = &eo->entry;
@@ -739,6 +766,7 @@ static void gdbjit_newentry(lua_State *L, GDBJITctx *ctx)
__jit_debug_descriptor.relevant_entry = &eo->entry;
__jit_debug_descriptor.action_flag = GDBJIT_REGISTER;
__jit_debug_register_code();
+ gdbjit_lock_release();
}
/* Add debug info for newly compiled trace and notify GDB. */
@@ -770,6 +798,7 @@ void lj_gdbjit_deltrace(jit_State *J, GCtrace *T)
{
GDBJITentryobj *eo = (GDBJITentryobj *)T->gdbjit_entry;
if (eo) {
+ gdbjit_lock_acquire();
if (eo->entry.prev_entry)
eo->entry.prev_entry->next_entry = eo->entry.next_entry;
else
@@ -779,6 +808,7 @@ void lj_gdbjit_deltrace(jit_State *J, GCtrace *T)
__jit_debug_descriptor.relevant_entry = &eo->entry;
__jit_debug_descriptor.action_flag = GDBJIT_UNREGISTER;
__jit_debug_register_code();
+ gdbjit_lock_release();
lj_mem_free(J2G(J), eo, eo->sz);
}
}