diff --git a/platform.txt b/platform.txt
index 2b2a2258..0f20ff62 100644
--- a/platform.txt
+++ b/platform.txt
@@ -14,12 +14,12 @@ compiler.prefix=arc-elf32
 
 compiler.path={runtime.tools.arc-elf32.path}/bin/
 compiler.c.cmd=arc-elf32-gcc
-compiler.c.flags=-c -mARCv2EM -mav2em -mlittle-endian -g -Os -Wall -fno-reorder-functions -fno-asynchronous-unwind-tables -fno-omit-frame-pointer -fno-defer-pop -Wno-unused-but-set-variable -Wno-main -ffreestanding -fno-stack-protector -mno-sdata -ffunction-sections -fdata-sections -fsigned-char -MMD -D__ARDUINO_ARC__
+compiler.c.flags=-c -mcpu=quarkse_em -mlittle-endian -g -Os -Wall -fno-reorder-functions -fno-asynchronous-unwind-tables -fno-omit-frame-pointer -fno-defer-pop -Wno-unused-but-set-variable -Wno-main -ffreestanding -fno-stack-protector -mno-sdata -ffunction-sections -fdata-sections -fsigned-char -MMD -D__ARDUINO_ARC__
 compiler.c.elf.cmd=arc-elf32-gcc
-compiler.c.elf.flags=-nostartfiles -nodefaultlibs -nostdlib -static -Wl,-X -Wl,-N -Wl,-mARCv2EM -Wl,-marcelf -Wl,--gc-sections
+compiler.c.elf.flags=-nostartfiles -nodefaultlibs -nostdlib -static -Wl,-X -Wl,-N -Wl,-mcpu=quarkse_em -Wl,-marcelf -Wl,--gc-sections
 compiler.S.flags=-c -g -x assembler-with-cpp
 compiler.cpp.cmd=arc-elf32-g++
-compiler.cpp.flags=-c -mARCv2EM -mav2em -mlittle-endian -g -Os -Wall -fno-reorder-functions -fno-asynchronous-unwind-tables -fno-omit-frame-pointer -fno-defer-pop -Wno-unused-but-set-variable -Wno-main -ffreestanding -fno-stack-protector -mno-sdata -ffunction-sections -fdata-sections -fsigned-char -MMD -fno-rtti -fno-exceptions -D__ARDUINO_ARC__ -std=c++11
+compiler.cpp.flags=-c -mcpu=quarkse_em -mlittle-endian -g -Os -Wall -fno-reorder-functions -fno-asynchronous-unwind-tables -fno-omit-frame-pointer -fno-defer-pop -Wno-unused-but-set-variable -Wno-main -ffreestanding -fno-stack-protector -mno-sdata -ffunction-sections -fdata-sections -fsigned-char -MMD -fno-rtti -fno-exceptions -D__ARDUINO_ARC__ -std=c++11
 compiler.ar.cmd=arc-elf32-ar
 compiler.ar.flags=rcs
 compiler.objcopy.cmd=arc-elf32-objcopy
@@ -68,7 +68,7 @@ recipe.cpp.o.pattern="{compiler.path}{compiler.cpp.cmd}" {compiler.cpp.flags} -D
 recipe.ar.pattern="{compiler.path}{compiler.ar.cmd}" {compiler.ar.flags} {compiler.ar.extra_flags} "{archive_file_path}" "{object_file}"
 
 ## Combine gc-sections, archives, and objects
-recipe.c.combine.pattern="{compiler.path}{compiler.c.elf.cmd}" {compiler.c.elf.flags} "-T{build.variant.path}/{build.ldscript}" "-Wl,-Map,{build.path}/{build.project_name}.map" {compiler.c.elf.extra_flags} -o "{build.path}/{build.project_name}.elf" "-L{build.path}" "-L{build.variant.path}" -Wl,--whole-archive "-l{build.variant_system_lib}" -Wl,--no-whole-archive -Wl,--start-group "-l{build.variant_system_lib}" -lc -lm -lgcc {object_files} "{build.path}/{archive_file}"
+recipe.c.combine.pattern="{compiler.path}{compiler.c.elf.cmd}" {compiler.c.elf.flags} "-T{build.variant.path}/{build.ldscript}" "-Wl,-Map,{build.path}/{build.project_name}.map" {compiler.c.elf.extra_flags} -o "{build.path}/{build.project_name}.elf" "-L{build.path}" "-L{build.variant.path}" -Wl,--whole-archive "-l{build.variant_system_lib}" -Wl,--no-whole-archive -Wl,--start-group "-l{build.variant_system_lib}" -lnsim -lc -lm -lgcc {object_files} "{build.path}/{archive_file}"
 
 ## Create output (.bin file)
 recipe.objcopy.bin.pattern="{compiler.path}{compiler.elf2bin.cmd}" {compiler.elf2bin.flags} {compiler.elf2hex.extra_flags} "{build.path}/{build.project_name}.elf" "{build.path}/{build.project_name}.bin"
diff --git a/system/libarc32_arduino101/bootcode/init.S b/system/libarc32_arduino101/bootcode/init.S
index 6b0aeea6..28aab7d6 100644
--- a/system/libarc32_arduino101/bootcode/init.S
+++ b/system/libarc32_arduino101/bootcode/init.S
@@ -21,6 +21,9 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 .globl _do_fault
 .type _do_fault,%function
 
+.globl _exit_halt
+.type _exit_halt,%function
+
 .globl _do_isr
 .type _do_isr,%function
 
@@ -57,6 +60,7 @@ _do_reset:
  */
 .balign 4
 _do_fault:
+_exit_halt:
     /* Set halt flag */
     flag 0x01
     nop
@@ -86,3 +90,4 @@ _do_isr:
     nop
 
     rtie
+
diff --git a/variants/arduino_101/libarc32drv_arduino101.a b/variants/arduino_101/libarc32drv_arduino101.a
index ae7eb78d..1228a153 100644
Binary files a/variants/arduino_101/libarc32drv_arduino101.a and b/variants/arduino_101/libarc32drv_arduino101.a differ