diff --git a/lldb/test/Shell/Register/Core/Inputs/strip-coredump.py b/lldb/test/Shell/Register/Core/Inputs/strip-coredump.py
new file mode 100755
--- /dev/null
+++ b/lldb/test/Shell/Register/Core/Inputs/strip-coredump.py
@@ -0,0 +1,69 @@
+#!/usr/bin/env python
+# Strip unnecessary data from a core dump to reduce its size.
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+import argparse
+import os.path
+import sys
+import tempfile
+
+from elftools.elf.elffile import ELFFile
+
+
+def strip_non_notes(elf, inf, outf):
+    next_segment_offset = min(x.header.p_offset for x in elf.iter_segments())
+    copy_segments = filter(lambda x: x.header.p_type == "PT_NOTE",
+                           elf.iter_segments())
+
+    # first copy the headers
+    inf.seek(0)
+    outf.write(inf.read(next_segment_offset))
+
+    for seg in copy_segments:
+        assert seg.header.p_filesz > 0
+
+        inf.seek(seg.header.p_offset)
+        # fill the area between last write and new offset with zeros
+        outf.seek(seg.header.p_offset)
+
+        # now copy the segment
+        outf.write(inf.read(seg.header.p_filesz))
+
+
+def main():
+    argp = argparse.ArgumentParser()
+    action = argp.add_mutually_exclusive_group(required=True)
+    action.add_argument("--strip-non-notes",
+                        action="store_const",
+                        const=strip_non_notes,
+                        dest="action",
+                        help="Strip all segments except for notes")
+    argp.add_argument("elf",
+                      help="ELF file to strip (in place)",
+                      nargs='+')
+    args = argp.parse_args()
+
+    for path in args.elf:
+        with open(path, "rb") as f:
+            elf = ELFFile(f)
+            # we do not support copying the section table now
+            assert elf.num_sections() == 0
+
+            tmpf = tempfile.NamedTemporaryFile(dir=os.path.dirname(path),
+                                               delete=False)
+            try:
+                args.action(elf, f, tmpf)
+            except:
+                os.unlink(tmpf.name)
+                raise
+            else:
+                os.rename(tmpf.name, path)
+
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())
diff --git a/lldb/test/Shell/Register/Core/Inputs/x86-32-freebsd.core b/lldb/test/Shell/Register/Core/Inputs/x86-32-freebsd.core
new file mode 100644
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

literal 0
Hc$@<O00001

diff --git a/lldb/test/Shell/Register/Core/Inputs/x86-32-gp.check b/lldb/test/Shell/Register/Core/Inputs/x86-32-gp.check
new file mode 100644
--- /dev/null
+++ b/lldb/test/Shell/Register/Core/Inputs/x86-32-gp.check
@@ -0,0 +1,24 @@
+# CHECK-DAG: eax = 0x23222120
+# CHECK-DAG: ebx = 0x24232221
+# CHECK-DAG: ecx = 0x25242322
+# CHECK-DAG: edx = 0x26252423
+# CHECK-DAG: edi = 0x2a292827
+# CHECK-DAG: esi = 0x29282726
+# CHECK-DAG: ebp = 0x28272625
+# CHECK-DAG: esp = 0x27262524
+# CHECK-DAG: ax = 0x2120
+# CHECK-DAG: bx = 0x2221
+# CHECK-DAG: cx = 0x2322
+# CHECK-DAG: dx = 0x2423
+# CHECK-DAG: di = 0x2827
+# CHECK-DAG: si = 0x2726
+# CHECK-DAG: bp = 0x2625
+# CHECK-DAG: sp = 0x2524
+# CHECK-DAG: ah = 0x21
+# CHECK-DAG: bh = 0x22
+# CHECK-DAG: ch = 0x23
+# CHECK-DAG: dh = 0x24
+# CHECK-DAG: al = 0x20
+# CHECK-DAG: bl = 0x21
+# CHECK-DAG: cl = 0x22
+# CHECK-DAG: dl = 0x23
diff --git a/lldb/test/Shell/Register/Core/Inputs/x86-32-linux.core b/lldb/test/Shell/Register/Core/Inputs/x86-32-linux.core
new file mode 100644
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

literal 0
Hc$@<O00001

diff --git a/lldb/test/Shell/Register/Core/Inputs/x86-32-netbsd.core b/lldb/test/Shell/Register/Core/Inputs/x86-32-netbsd.core
new file mode 100644
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

literal 0
Hc$@<O00001

diff --git a/lldb/test/Shell/Register/Core/Inputs/x86-64-freebsd.core b/lldb/test/Shell/Register/Core/Inputs/x86-64-freebsd.core
new file mode 100644
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

literal 0
Hc$@<O00001

diff --git a/lldb/test/Shell/Register/Core/Inputs/x86-64-gp-hixmm.check b/lldb/test/Shell/Register/Core/Inputs/x86-64-gp-hixmm.check
new file mode 100644
--- /dev/null
+++ b/lldb/test/Shell/Register/Core/Inputs/x86-64-gp-hixmm.check
@@ -0,0 +1,77 @@
+# CHECK-DAG: rax = 0x2726252423222120
+# CHECK-DAG: rbx = 0x2827262524232221
+# CHECK-DAG: rcx = 0x2928272625242322
+# CHECK-DAG: rdx = 0x2a29282726252423
+# CHECK-DAG: rdi = 0x2e2d2c2b2a292827
+# CHECK-DAG: rsi = 0x2d2c2b2a29282726
+# CHECK-DAG: rbp = 0x2c2b2a2928272625
+# CHECK-DAG: rsp = 0x2b2a292827262524
+# CHECK-DAG: r8 = 0x2f2e2d2c2b2a2928
+# CHECK-DAG: r9 = 0x302f2e2d2c2b2a29
+# CHECK-DAG: r10 = 0x31302f2e2d2c2b2a
+# CHECK-DAG: r11 = 0x3231302f2e2d2c2b
+# CHECK-DAG: r12 = 0x333231302f2e2d2c
+# CHECK-DAG: r13 = 0x34333231302f2e2d
+# CHECK-DAG: r14 = 0x3534333231302f2e
+# CHECK-DAG: r15 = 0x363534333231302f
+# CHECK-DAG: eax = 0x23222120
+# CHECK-DAG: ebx = 0x24232221
+# CHECK-DAG: ecx = 0x25242322
+# CHECK-DAG: edx = 0x26252423
+# CHECK-DAG: edi = 0x2a292827
+# CHECK-DAG: esi = 0x29282726
+# CHECK-DAG: ebp = 0x28272625
+# CHECK-DAG: esp = 0x27262524
+# CHECK-DAG: r8d = 0x2b2a2928
+# CHECK-DAG: r9d = 0x2c2b2a29
+# CHECK-DAG: r10d = 0x2d2c2b2a
+# CHECK-DAG: r11d = 0x2e2d2c2b
+# CHECK-DAG: r12d = 0x2f2e2d2c
+# CHECK-DAG: r13d = 0x302f2e2d
+# CHECK-DAG: r14d = 0x31302f2e
+# CHECK-DAG: r15d = 0x3231302f
+# CHECK-DAG: ax = 0x2120
+# CHECK-DAG: bx = 0x2221
+# CHECK-DAG: cx = 0x2322
+# CHECK-DAG: dx = 0x2423
+# CHECK-DAG: di = 0x2827
+# CHECK-DAG: si = 0x2726
+# CHECK-DAG: bp = 0x2625
+# CHECK-DAG: sp = 0x2524
+# CHECK-DAG: r8w = 0x2928
+# CHECK-DAG: r9w = 0x2a29
+# CHECK-DAG: r10w = 0x2b2a
+# CHECK-DAG: r11w = 0x2c2b
+# CHECK-DAG: r12w = 0x2d2c
+# CHECK-DAG: r13w = 0x2e2d
+# CHECK-DAG: r14w = 0x2f2e
+# CHECK-DAG: r15w = 0x302f
+# CHECK-DAG: ah = 0x21
+# CHECK-DAG: bh = 0x22
+# CHECK-DAG: ch = 0x23
+# CHECK-DAG: dh = 0x24
+# CHECK-DAG: al = 0x20
+# CHECK-DAG: bl = 0x21
+# CHECK-DAG: cl = 0x22
+# CHECK-DAG: dl = 0x23
+# CHECK-DAG: dil = 0x27
+# CHECK-DAG: sil = 0x26
+# CHECK-DAG: bpl = 0x25
+# CHECK-DAG: spl = 0x24
+# CHECK-DAG: r8l = 0x28
+# CHECK-DAG: r9l = 0x29
+# CHECK-DAG: r10l = 0x2a
+# CHECK-DAG: r11l = 0x2b
+# CHECK-DAG: r12l = 0x2c
+# CHECK-DAG: r13l = 0x2d
+# CHECK-DAG: r14l = 0x2e
+# CHECK-DAG: r15l = 0x2f
+
+# CHECK-DAG: xmm8 = {0x08 0x09 0x0a 0x0b 0x0c 0x0d 0x0e 0x0f 0x10 0x11 0x12 0x13 0x14 0x15 0x16 0x17}
+# CHECK-DAG: xmm9 = {0x09 0x0a 0x0b 0x0c 0x0d 0x0e 0x0f 0x10 0x11 0x12 0x13 0x14 0x15 0x16 0x17 0x18}
+# CHECK-DAG: xmm10 = {0x0a 0x0b 0x0c 0x0d 0x0e 0x0f 0x10 0x11 0x12 0x13 0x14 0x15 0x16 0x17 0x18 0x19}
+# CHECK-DAG: xmm11 = {0x0b 0x0c 0x0d 0x0e 0x0f 0x10 0x11 0x12 0x13 0x14 0x15 0x16 0x17 0x18 0x19 0x1a}
+# CHECK-DAG: xmm12 = {0x0c 0x0d 0x0e 0x0f 0x10 0x11 0x12 0x13 0x14 0x15 0x16 0x17 0x18 0x19 0x1a 0x1b}
+# CHECK-DAG: xmm13 = {0x0d 0x0e 0x0f 0x10 0x11 0x12 0x13 0x14 0x15 0x16 0x17 0x18 0x19 0x1a 0x1b 0x1c}
+# CHECK-DAG: xmm14 = {0x0e 0x0f 0x10 0x11 0x12 0x13 0x14 0x15 0x16 0x17 0x18 0x19 0x1a 0x1b 0x1c 0x1d}
+# CHECK-DAG: xmm15 = {0x0f 0x10 0x11 0x12 0x13 0x14 0x15 0x16 0x17 0x18 0x19 0x1a 0x1b 0x1c 0x1d 0x1e}
diff --git a/lldb/test/Shell/Register/Core/Inputs/x86-64-linux.core b/lldb/test/Shell/Register/Core/Inputs/x86-64-linux.core
new file mode 100644
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

literal 0
Hc$@<O00001

diff --git a/lldb/test/Shell/Register/Core/Inputs/x86-64-netbsd.core b/lldb/test/Shell/Register/Core/Inputs/x86-64-netbsd.core
new file mode 100644
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

literal 0
Hc$@<O00001

diff --git a/lldb/test/Shell/Register/Core/Inputs/x86-core-dump.cpp b/lldb/test/Shell/Register/Core/Inputs/x86-core-dump.cpp
new file mode 100644
--- /dev/null
+++ b/lldb/test/Shell/Register/Core/Inputs/x86-core-dump.cpp
@@ -0,0 +1,324 @@
+// This program is used to generate a core dump for testing register dumps.
+// The exact set of registers dumped depends on the instruction sets enabled
+// via compiler flags.
+
+#include <cstdint>
+
+struct alignas(64) zmm_t {
+  uint64_t a, b, c, d, e, f, g, h;
+};
+
+struct alignas(16) float80_raw {
+  uint64_t mantissa;
+  uint16_t sign_exp;
+};
+
+int main() {
+  // test data for xmm, ymm and zmm registers
+  constexpr zmm_t zmm[] = {
+    { 0x0706050403020100, 0x0F0E0D0C0B0A0908,
+      0x1716151413121110, 0x1F1E1D1C1B1A1918,
+      0x2726252423222120, 0x2F2E2D2C2B2A2928,
+      0x3736353433323130, 0x3F3E3D3C3B3A3938, },
+    { 0x0807060504030201, 0x100F0E0D0C0B0A09,
+      0x1817161514131211, 0x201F1E1D1C1B1A19,
+      0x2827262524232221, 0x302F2E2D2C2B2A29,
+      0x3837363534333231, 0x403F3E3D3C3B3A39, },
+    { 0x0908070605040302, 0x11100F0E0D0C0B0A,
+      0x1918171615141312, 0x21201F1E1D1C1B1A,
+      0x2928272625242322, 0x31302F2E2D2C2B2A,
+      0x3938373635343332, 0x41403F3E3D3C3B3A, },
+    { 0x0A09080706050403, 0x1211100F0E0D0C0B,
+      0x1A19181716151413, 0x2221201F1E1D1C1B,
+      0x2A29282726252423, 0x3231302F2E2D2C2B,
+      0x3A39383736353433, 0x4241403F3E3D3C3B, },
+    { 0x0B0A090807060504, 0x131211100F0E0D0C,
+      0x1B1A191817161514, 0x232221201F1E1D1C,
+      0x2B2A292827262524, 0x333231302F2E2D2C,
+      0x3B3A393837363534, 0x434241403F3E3D3C, },
+    { 0x0C0B0A0908070605, 0x14131211100F0E0D,
+      0x1C1B1A1918171615, 0x24232221201F1E1D,
+      0x2C2B2A2928272625, 0x34333231302F2E2D,
+      0x3C3B3A3938373635, 0x44434241403F3E3D, },
+    { 0x0D0C0B0A09080706, 0x1514131211100F0E,
+      0x1D1C1B1A19181716, 0x2524232221201F1E,
+      0x2D2C2B2A29282726, 0x3534333231302F2E,
+      0x3D3C3B3A39383736, 0x4544434241403F3E, },
+    { 0x0E0D0C0B0A090807, 0x161514131211100F,
+      0x1E1D1C1B1A191817, 0x262524232221201F,
+      0x2E2D2C2B2A292827, 0x363534333231302F,
+      0x3E3D3C3B3A393837, 0x464544434241403F, },
+#if defined(__x86_64__) || defined(_M_X64)
+    { 0x0F0E0D0C0B0A0908, 0x1716151413121110,
+      0x1F1E1D1C1B1A1918, 0x2726252423222120,
+      0x2F2E2D2C2B2A2928, 0x3736353433323130,
+      0x3F3E3D3C3B3A3938, 0x4746454443424140, },
+    { 0x100F0E0D0C0B0A09, 0x1817161514131211,
+      0x201F1E1D1C1B1A19, 0x2827262524232221,
+      0x302F2E2D2C2B2A29, 0x3837363534333231,
+      0x403F3E3D3C3B3A39, 0x4847464544434241, },
+    { 0x11100F0E0D0C0B0A, 0x1918171615141312,
+      0x21201F1E1D1C1B1A, 0x2928272625242322,
+      0x31302F2E2D2C2B2A, 0x3938373635343332,
+      0x41403F3E3D3C3B3A, 0x4948474645444342, },
+    { 0x1211100F0E0D0C0B, 0x1A19181716151413,
+      0x2221201F1E1D1C1B, 0x2A29282726252423,
+      0x3231302F2E2D2C2B, 0x3A39383736353433,
+      0x4241403F3E3D3C3B, 0x4A49484746454443, },
+    { 0x131211100F0E0D0C, 0x1B1A191817161514,
+      0x232221201F1E1D1C, 0x2B2A292827262524,
+      0x333231302F2E2D2C, 0x3B3A393837363534,
+      0x434241403F3E3D3C, 0x4B4A494847464544, },
+    { 0x14131211100F0E0D, 0x1C1B1A1918171615,
+      0x24232221201F1E1D, 0x2C2B2A2928272625,
+      0x34333231302F2E2D, 0x3C3B3A3938373635,
+      0x44434241403F3E3D, 0x4C4B4A4948474645, },
+    { 0x1514131211100F0E, 0x1D1C1B1A19181716,
+      0x2524232221201F1E, 0x2D2C2B2A29282726,
+      0x3534333231302F2E, 0x3D3C3B3A39383736,
+      0x4544434241403F3E, 0x4D4C4B4A49484746, },
+    { 0x161514131211100F, 0x1E1D1C1B1A191817,
+      0x262524232221201F, 0x2E2D2C2B2A292827,
+      0x363534333231302F, 0x3E3D3C3B3A393837,
+      0x464544434241403F, 0x4E4D4C4B4A494847, },
+    { 0x1716151413121110, 0x1F1E1D1C1B1A1918,
+      0x2726252423222120, 0x2F2E2D2C2B2A2928,
+      0x3736353433323130, 0x3F3E3D3C3B3A3938,
+      0x4746454443424140, 0x4F4E4D4C4B4A4948, },
+    { 0x1817161514131211, 0x201F1E1D1C1B1A19,
+      0x2827262524232221, 0x302F2E2D2C2B2A29,
+      0x3837363534333231, 0x403F3E3D3C3B3A39,
+      0x4847464544434241, 0x504F4E4D4C4B4A49, },
+    { 0x1918171615141312, 0x21201F1E1D1C1B1A,
+      0x2928272625242322, 0x31302F2E2D2C2B2A,
+      0x3938373635343332, 0x41403F3E3D3C3B3A,
+      0x4948474645444342, 0x51504F4E4D4C4B4A, },
+    { 0x1A19181716151413, 0x2221201F1E1D1C1B,
+      0x2A29282726252423, 0x3231302F2E2D2C2B,
+      0x3A39383736353433, 0x4241403F3E3D3C3B,
+      0x4A49484746454443, 0x5251504F4E4D4C4B, },
+    { 0x1B1A191817161514, 0x232221201F1E1D1C,
+      0x2B2A292827262524, 0x333231302F2E2D2C,
+      0x3B3A393837363534, 0x434241403F3E3D3C,
+      0x4B4A494847464544, 0x535251504F4E4D4C, },
+    { 0x1C1B1A1918171615, 0x24232221201F1E1D,
+      0x2C2B2A2928272625, 0x34333231302F2E2D,
+      0x3C3B3A3938373635, 0x44434241403F3E3D,
+      0x4C4B4A4948474645, 0x54535251504F4E4D, },
+    { 0x1D1C1B1A19181716, 0x2524232221201F1E,
+      0x2D2C2B2A29282726, 0x3534333231302F2E,
+      0x3D3C3B3A39383736, 0x4544434241403F3E,
+      0x4D4C4B4A49484746, 0x5554535251504F4E, },
+    { 0x1E1D1C1B1A191817, 0x262524232221201F,
+      0x2E2D2C2B2A292827, 0x363534333231302F,
+      0x3E3D3C3B3A393837, 0x464544434241403F,
+      0x4E4D4C4B4A494847, 0x565554535251504F, },
+    { 0x1F1E1D1C1B1A1918, 0x2726252423222120,
+      0x2F2E2D2C2B2A2928, 0x3736353433323130,
+      0x3F3E3D3C3B3A3938, 0x4746454443424140,
+      0x4F4E4D4C4B4A4948, 0x5756555453525150, },
+    { 0x201F1E1D1C1B1A19, 0x2827262524232221,
+      0x302F2E2D2C2B2A29, 0x3837363534333231,
+      0x403F3E3D3C3B3A39, 0x4847464544434241,
+      0x504F4E4D4C4B4A49, 0x5857565554535251, },
+    { 0x21201F1E1D1C1B1A, 0x2928272625242322,
+      0x31302F2E2D2C2B2A, 0x3938373635343332,
+      0x41403F3E3D3C3B3A, 0x4948474645444342,
+      0x51504F4E4D4C4B4A, 0x5958575655545352, },
+    { 0x2221201F1E1D1C1B, 0x2A29282726252423,
+      0x3231302F2E2D2C2B, 0x3A39383736353433,
+      0x4241403F3E3D3C3B, 0x4A49484746454443,
+      0x5251504F4E4D4C4B, 0x5A59585756555453, },
+    { 0x232221201F1E1D1C, 0x2B2A292827262524,
+      0x333231302F2E2D2C, 0x3B3A393837363534,
+      0x434241403F3E3D3C, 0x4B4A494847464544,
+      0x535251504F4E4D4C, 0x5B5A595857565554, },
+    { 0x24232221201F1E1D, 0x2C2B2A2928272625,
+      0x34333231302F2E2D, 0x3C3B3A3938373635,
+      0x44434241403F3E3D, 0x4C4B4A4948474645,
+      0x54535251504F4E4D, 0x5C5B5A5958575655, },
+    { 0x2524232221201F1E, 0x2D2C2B2A29282726,
+      0x3534333231302F2E, 0x3D3C3B3A39383736,
+      0x4544434241403F3E, 0x4D4C4B4A49484746,
+      0x5554535251504F4E, 0x5D5C5B5A59585756, },
+    { 0x262524232221201F, 0x2E2D2C2B2A292827,
+      0x363534333231302F, 0x3E3D3C3B3A393837,
+      0x464544434241403F, 0x4E4D4C4B4A494847,
+      0x565554535251504F, 0x5E5D5C5B5A595857, },
+#endif
+  };
+
+  // test data for FPU registers
+  float80_raw st[] = {
+    {0x8000000000000000, 0x4000},  // +2.0
+    {0x3f00000000000000, 0x0000},  // 1.654785e-4932 (denormal)
+    {0x0000000000000000, 0x0000},  // +0
+    {0x0000000000000000, 0x8000},  // -0
+    {0x8000000000000000, 0x7fff},  // +inf
+    {0x8000000000000000, 0xffff},  // -inf
+    {0xc000000000000000, 0xffff},  // nan
+    // st7 will be freed to test tag word better
+    {0x0000000000000000, 0x0000},  // +0
+  };
+
+  // unmask divide-by-zero exception
+  uint16_t cw = 0x037b;
+  // used as single-precision float
+  uint32_t zero = 0;
+
+  // test data for GP registers
+  const uint64_t gpr[] = {
+    0x2726252423222120,
+    0x2827262524232221,
+    0x2928272625242322,
+    0x2A29282726252423,
+    0x2B2A292827262524,
+    0x2C2B2A2928272625,
+    0x2D2C2B2A29282726,
+    0x2E2D2C2B2A292827,
+    0x2F2E2D2C2B2A2928,
+    0x302F2E2D2C2B2A29,
+    0x31302F2E2D2C2B2A,
+    0x3231302F2E2D2C2B,
+    0x333231302F2E2D2C,
+    0x34333231302F2E2D,
+    0x3534333231302F2E,
+    0x363534333231302F,
+  };
+
+  asm volatile(
+    // fill the highest register set supported -- ZMM, YMM or XMM
+#if defined(__AVX512F__)
+    "vmovaps  0x000(%0), %%zmm0\n\t"
+    "vmovaps  0x040(%0), %%zmm1\n\t"
+    "vmovaps  0x080(%0), %%zmm2\n\t"
+    "vmovaps  0x0C0(%0), %%zmm3\n\t"
+    "vmovaps  0x100(%0), %%zmm4\n\t"
+    "vmovaps  0x140(%0), %%zmm5\n\t"
+    "vmovaps  0x180(%0), %%zmm6\n\t"
+    "vmovaps  0x1C0(%0), %%zmm7\n\t"
+#if defined(__x86_64__) || defined(_M_X64)
+    "vmovaps  0x200(%0), %%zmm8\n\t"
+    "vmovaps  0x240(%0), %%zmm9\n\t"
+    "vmovaps  0x280(%0), %%zmm10\n\t"
+    "vmovaps  0x2C0(%0), %%zmm11\n\t"
+    "vmovaps  0x300(%0), %%zmm12\n\t"
+    "vmovaps  0x340(%0), %%zmm13\n\t"
+    "vmovaps  0x380(%0), %%zmm14\n\t"
+    "vmovaps  0x3C0(%0), %%zmm15\n\t"
+    "vmovaps  0x400(%0), %%zmm16\n\t"
+    "vmovaps  0x440(%0), %%zmm17\n\t"
+    "vmovaps  0x480(%0), %%zmm18\n\t"
+    "vmovaps  0x4C0(%0), %%zmm19\n\t"
+    "vmovaps  0x500(%0), %%zmm20\n\t"
+    "vmovaps  0x540(%0), %%zmm21\n\t"
+    "vmovaps  0x580(%0), %%zmm22\n\t"
+    "vmovaps  0x5C0(%0), %%zmm23\n\t"
+    "vmovaps  0x600(%0), %%zmm24\n\t"
+    "vmovaps  0x640(%0), %%zmm25\n\t"
+    "vmovaps  0x680(%0), %%zmm26\n\t"
+    "vmovaps  0x6C0(%0), %%zmm27\n\t"
+    "vmovaps  0x700(%0), %%zmm28\n\t"
+    "vmovaps  0x740(%0), %%zmm29\n\t"
+    "vmovaps  0x780(%0), %%zmm30\n\t"
+    "vmovaps  0x7C0(%0), %%zmm31\n\t"
+#endif // defined(__x86_64__) || defined(_M_X64)
+#elif defined(__AVX__)
+    "vmovaps  0x000(%0), %%ymm0\n\t"
+    "vmovaps  0x040(%0), %%ymm1\n\t"
+    "vmovaps  0x080(%0), %%ymm2\n\t"
+    "vmovaps  0x0C0(%0), %%ymm3\n\t"
+    "vmovaps  0x100(%0), %%ymm4\n\t"
+    "vmovaps  0x140(%0), %%ymm5\n\t"
+    "vmovaps  0x180(%0), %%ymm6\n\t"
+    "vmovaps  0x1C0(%0), %%ymm7\n\t"
+#if defined(__x86_64__) || defined(_M_X64)
+    "vmovaps  0x200(%0), %%ymm8\n\t"
+    "vmovaps  0x240(%0), %%ymm9\n\t"
+    "vmovaps  0x280(%0), %%ymm10\n\t"
+    "vmovaps  0x2C0(%0), %%ymm11\n\t"
+    "vmovaps  0x300(%0), %%ymm12\n\t"
+    "vmovaps  0x340(%0), %%ymm13\n\t"
+    "vmovaps  0x380(%0), %%ymm14\n\t"
+    "vmovaps  0x3C0(%0), %%ymm15\n\t"
+#endif // defined(__x86_64__) || defined(_M_X64)
+#else // !defined(__AVX__)
+    "movaps   0x000(%0), %%xmm0\n\t"
+    "movaps   0x040(%0), %%xmm1\n\t"
+    "movaps   0x080(%0), %%xmm2\n\t"
+    "movaps   0x0C0(%0), %%xmm3\n\t"
+    "movaps   0x100(%0), %%xmm4\n\t"
+    "movaps   0x140(%0), %%xmm5\n\t"
+    "movaps   0x180(%0), %%xmm6\n\t"
+    "movaps   0x1C0(%0), %%xmm7\n\t"
+#if defined(__x86_64__) || defined(_M_X64)
+    "movaps   0x200(%0), %%xmm8\n\t"
+    "movaps   0x240(%0), %%xmm9\n\t"
+    "movaps   0x280(%0), %%xmm10\n\t"
+    "movaps   0x2C0(%0), %%xmm11\n\t"
+    "movaps   0x300(%0), %%xmm12\n\t"
+    "movaps   0x340(%0), %%xmm13\n\t"
+    "movaps   0x380(%0), %%xmm14\n\t"
+    "movaps   0x3C0(%0), %%xmm15\n\t"
+#endif // defined(__x86_64__) || defined(_M_X64)
+#endif
+    "\n\t"
+
+    // fill FPU registers
+    "finit\n\t"
+    "fldcw %2\n\t"
+    // load on stack in reverse order to make the result easier to read
+    "fldt 0x70(%1)\n\t"
+    "fldt 0x60(%1)\n\t"
+    "fldt 0x50(%1)\n\t"
+    "fldt 0x40(%1)\n\t"
+    "fldt 0x30(%1)\n\t"
+    "fldt 0x20(%1)\n\t"
+    "fldt 0x10(%1)\n\t"
+    "fldt 0x00(%1)\n\t"
+    // free st7
+    "ffree %%st(7)\n\t"
+    // this should trigger a divide-by-zero
+    "fdivs (%3)\n\t"
+    "\n\t"
+
+    // fill GP registers
+    // note that this invalidates all parameters
+#if defined(__x86_64__) || defined(_M_X64)
+    "movq 0x78(%4), %%r15\n\t"
+    "movq 0x70(%4), %%r14\n\t"
+    "movq 0x68(%4), %%r13\n\t"
+    "movq 0x60(%4), %%r12\n\t"
+    "movq 0x58(%4), %%r11\n\t"
+    "movq 0x50(%4), %%r10\n\t"
+    "movq 0x48(%4), %%r9\n\t"
+    "movq 0x40(%4), %%r8\n\t"
+    "movq 0x38(%4), %%rdi\n\t"
+    "movq 0x30(%4), %%rsi\n\t"
+    "movq 0x28(%4), %%rbp\n\t"
+    "movq 0x20(%4), %%rsp\n\t"
+    "movq 0x18(%4), %%rdx\n\t"
+    "movq 0x10(%4), %%rcx\n\t"
+    "movq 0x08(%4), %%rbx\n\t"
+    "movq 0x00(%4), %%rax\n\t"
+#else // !(defined(__x86_64__) || defined(_M_X64))
+    "movl 0x38(%4), %%edi\n\t"
+    "movl 0x30(%4), %%esi\n\t"
+    "movl 0x28(%4), %%ebp\n\t"
+    "movl 0x20(%4), %%esp\n\t"
+    "movl 0x18(%4), %%edx\n\t"
+    "movl 0x10(%4), %%ecx\n\t"
+    "movl 0x08(%4), %%ebx\n\t"
+    "movl 0x00(%4), %%eax\n\t"
+#endif
+    "\n\t"
+
+    // trigger SEGV
+    "movl %%eax, 0\n\t"
+    :
+    : "b"(zmm), "c"(st), "m"(cw), "d"(&zero), "a"(gpr)
+    : // clobbers do not really matter since we crash
+  );
+
+  return 0;
+}
diff --git a/lldb/test/Shell/Register/Core/Inputs/x86-fp.check b/lldb/test/Shell/Register/Core/Inputs/x86-fp.check
new file mode 100644
--- /dev/null
+++ b/lldb/test/Shell/Register/Core/Inputs/x86-fp.check
@@ -0,0 +1,30 @@
+# CHECK-DAG: fctrl = 0x037b
+# CHECK-DAG: fstat = 0x8084
+# CHECK-DAG: ftag = 0x007f
+# CHECK-DAG: fop = 0x0032
+# CHECK-DAG: mxcsr = 0x00001f80
+# CHECK-DAG: mxcsrmask = 0x0002ffff
+# CHECK-DAG: st0 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x80 0x00 0x40}
+# CHECK-DAG: st1 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x3f 0x00 0x00}
+# CHECK-DAG: st2 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
+# CHECK-DAG: st3 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x80}
+# CHECK-DAG: st4 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x80 0xff 0x7f}
+# CHECK-DAG: st5 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x80 0xff 0xff}
+# CHECK-DAG: st6 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0xc0 0xff 0xff}
+# CHECK-DAG: st7 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
+# CHECK-DAG: mm0 = 0x8000000000000000
+# CHECK-DAG: mm1 = 0x3f00000000000000
+# CHECK-DAG: mm2 = 0x0000000000000000
+# CHECK-DAG: mm3 = 0x0000000000000000
+# CHECK-DAG: mm4 = 0x8000000000000000
+# CHECK-DAG: mm5 = 0x8000000000000000
+# CHECK-DAG: mm6 = 0xc000000000000000
+# CHECK-DAG: mm7 = 0x0000000000000000
+# CHECK-DAG: xmm0 = {0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0a 0x0b 0x0c 0x0d 0x0e 0x0f}
+# CHECK-DAG: xmm1 = {0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0a 0x0b 0x0c 0x0d 0x0e 0x0f 0x10}
+# CHECK-DAG: xmm2 = {0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0a 0x0b 0x0c 0x0d 0x0e 0x0f 0x10 0x11}
+# CHECK-DAG: xmm3 = {0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0a 0x0b 0x0c 0x0d 0x0e 0x0f 0x10 0x11 0x12}
+# CHECK-DAG: xmm4 = {0x04 0x05 0x06 0x07 0x08 0x09 0x0a 0x0b 0x0c 0x0d 0x0e 0x0f 0x10 0x11 0x12 0x13}
+# CHECK-DAG: xmm5 = {0x05 0x06 0x07 0x08 0x09 0x0a 0x0b 0x0c 0x0d 0x0e 0x0f 0x10 0x11 0x12 0x13 0x14}
+# CHECK-DAG: xmm6 = {0x06 0x07 0x08 0x09 0x0a 0x0b 0x0c 0x0d 0x0e 0x0f 0x10 0x11 0x12 0x13 0x14 0x15}
+# CHECK-DAG: xmm7 = {0x07 0x08 0x09 0x0a 0x0b 0x0c 0x0d 0x0e 0x0f 0x10 0x11 0x12 0x13 0x14 0x15 0x16}
diff --git a/lldb/test/Shell/Register/Core/x86-32-freebsd-addr.test b/lldb/test/Shell/Register/Core/x86-32-freebsd-addr.test
new file mode 100644
--- /dev/null
+++ b/lldb/test/Shell/Register/Core/x86-32-freebsd-addr.test
@@ -0,0 +1,13 @@
+# RUN: %lldb -b -s %s -c %p/Inputs/x86-32-freebsd.core | FileCheck %s
+
+register read --all
+# CHECK-DAG: eip = 0x00401c6b
+# CHECK-DAG: eflags = 0x00010246
+# CHECK-DAG: cs = 0x00000033
+# CHECK-DAG: fs = 0x00000013
+# CHECK-DAG: gs = 0x0000001b
+# CHECK-DAG: ss = 0x0000003b
+# CHECK-DAG: ds = 0x0000003b
+# CHECK-DAG: es = 0x0000003b
+
+# TODO: fix reading fp registers
diff --git a/lldb/test/Shell/Register/Core/x86-32-freebsd-gp.test b/lldb/test/Shell/Register/Core/x86-32-freebsd-gp.test
new file mode 100644
--- /dev/null
+++ b/lldb/test/Shell/Register/Core/x86-32-freebsd-gp.test
@@ -0,0 +1,3 @@
+# RUN: %lldb -b -s %s -c %p/Inputs/x86-32-freebsd.core | FileCheck %p/Inputs/x86-32-gp.check
+
+register read --all
diff --git a/lldb/test/Shell/Register/Core/x86-32-linux-addr.test b/lldb/test/Shell/Register/Core/x86-32-linux-addr.test
new file mode 100644
--- /dev/null
+++ b/lldb/test/Shell/Register/Core/x86-32-linux-addr.test
@@ -0,0 +1,16 @@
+# RUN: %lldb -b -s %s -c %p/Inputs/x86-32-linux.core | FileCheck %s
+
+register read --all
+# CHECK-DAG: eip = 0x080492ab
+# CHECK-DAG: eflags = 0x00010283
+# CHECK-DAG: cs = 0x00000023
+# CHECK-DAG: fs = 0x00000000
+# CHECK-DAG: gs = 0x00000063
+# CHECK-DAG: ss = 0x0000002b
+# CHECK-DAG: ds = 0x0000002b
+# CHECK-DAG: es = 0x0000002b
+
+# CHECK-DAG: fiseg = 0x00000000
+# CHECK-DAG: fioff = 0x08049292
+# CHECK-DAG: foseg = 0x00000000
+# CHECK-DAG: fooff = 0xfff2d078
diff --git a/lldb/test/Shell/Register/Core/x86-32-linux-fp.test b/lldb/test/Shell/Register/Core/x86-32-linux-fp.test
new file mode 100644
--- /dev/null
+++ b/lldb/test/Shell/Register/Core/x86-32-linux-fp.test
@@ -0,0 +1,3 @@
+# RUN: %lldb -b -s %s -c %p/Inputs/x86-32-linux.core | FileCheck %p/Inputs/x86-fp.check
+
+register read --all
diff --git a/lldb/test/Shell/Register/Core/x86-32-linux-gp.test b/lldb/test/Shell/Register/Core/x86-32-linux-gp.test
new file mode 100644
--- /dev/null
+++ b/lldb/test/Shell/Register/Core/x86-32-linux-gp.test
@@ -0,0 +1,3 @@
+# RUN: %lldb -b -s %s -c %p/Inputs/x86-32-linux.core | FileCheck %p/Inputs/x86-32-gp.check
+
+register read --all
diff --git a/lldb/test/Shell/Register/Core/x86-64-freebsd-addr.test b/lldb/test/Shell/Register/Core/x86-64-freebsd-addr.test
new file mode 100644
--- /dev/null
+++ b/lldb/test/Shell/Register/Core/x86-64-freebsd-addr.test
@@ -0,0 +1,18 @@
+# RUN: %lldb -b -s %s -c %p/Inputs/x86-64-freebsd.core | FileCheck %s
+
+register read --all
+# CHECK-DAG: rip = 0x000000000020242b
+# CHECK-DAG: rflags = 0x0000000000010246
+# CHECK-DAG: cs = 0x0000000000000043
+# CHECK-DAG: fs = 0x0013
+# CHECK-DAG: gs = 0x001b
+# CHECK-DAG: ss = 0x000000000000003b
+# CHECK-DAG: ds = 0x003b
+# CHECK-DAG: es = 0x003b
+
+# CHECK-DAG: fiseg = 0x00000000
+# CHECK-DAG: fioff = 0x002023ea
+# CHECK-DAG: fip = 0x00000000002023ea
+# CHECK-DAG: foseg = 0x00007fff
+# CHECK-DAG: fooff = 0xffffd138
+# CHECK-DAG: fdp = 0x00007fffffffd138
diff --git a/lldb/test/Shell/Register/Core/x86-64-freebsd-fp.test b/lldb/test/Shell/Register/Core/x86-64-freebsd-fp.test
new file mode 100644
--- /dev/null
+++ b/lldb/test/Shell/Register/Core/x86-64-freebsd-fp.test
@@ -0,0 +1,3 @@
+# RUN: %lldb -b -s %s -c %p/Inputs/x86-64-freebsd.core | FileCheck %p/Inputs/x86-fp.check
+
+register read --all
diff --git a/lldb/test/Shell/Register/Core/x86-64-freebsd-gp.test b/lldb/test/Shell/Register/Core/x86-64-freebsd-gp.test
new file mode 100644
--- /dev/null
+++ b/lldb/test/Shell/Register/Core/x86-64-freebsd-gp.test
@@ -0,0 +1,3 @@
+# RUN: %lldb -b -s %s -c %p/Inputs/x86-64-freebsd.core | FileCheck %p/Inputs/x86-64-gp-hixmm.check
+
+register read --all
diff --git a/lldb/test/Shell/Register/Core/x86-64-linux-addr.test b/lldb/test/Shell/Register/Core/x86-64-linux-addr.test
new file mode 100644
--- /dev/null
+++ b/lldb/test/Shell/Register/Core/x86-64-linux-addr.test
@@ -0,0 +1,18 @@
+# RUN: %lldb -b -s %s -c %p/Inputs/x86-64-linux.core | FileCheck %s
+
+register read --all
+# CHECK-DAG: rip = 0x00000000004012db
+# CHECK-DAG: rflags = 0x0000000000010246
+# CHECK-DAG: cs = 0x0000000000000033
+# CHECK-DAG: fs = 0x0000000000000000
+# CHECK-DAG: gs = 0x0000000000000000
+# CHECK-DAG: ss = 0x000000000000002b
+# CHECK-DAG: ds = 0x0000000000000000
+# CHECK-DAG: es = 0x0000000000000000
+
+# CHECK-DAG: fiseg = 0x00000000
+# CHECK-DAG: fioff = 0x0040129a
+# CHECK-DAG: fip = 0x000000000040129a
+# CHECK-DAG: foseg = 0x00007ffd
+# CHECK-DAG: fooff = 0x547cb5f8
+# CHECK-DAG: fdp = 0x00007ffd547cb5f8
diff --git a/lldb/test/Shell/Register/Core/x86-64-linux-fp.test b/lldb/test/Shell/Register/Core/x86-64-linux-fp.test
new file mode 100644
--- /dev/null
+++ b/lldb/test/Shell/Register/Core/x86-64-linux-fp.test
@@ -0,0 +1,3 @@
+# RUN: %lldb -b -s %s -c %p/Inputs/x86-64-linux.core | FileCheck %p/Inputs/x86-fp.check
+
+register read --all
diff --git a/lldb/test/Shell/Register/Core/x86-64-linux-gp.test b/lldb/test/Shell/Register/Core/x86-64-linux-gp.test
new file mode 100644
--- /dev/null
+++ b/lldb/test/Shell/Register/Core/x86-64-linux-gp.test
@@ -0,0 +1,3 @@
+# RUN: %lldb -b -s %s -c %p/Inputs/x86-64-linux.core | FileCheck %p/Inputs/x86-64-gp-hixmm.check
+
+register read --all
diff --git a/lldb/test/Shell/Register/Core/x86-64-netbsd-addr.test b/lldb/test/Shell/Register/Core/x86-64-netbsd-addr.test
new file mode 100644
--- /dev/null
+++ b/lldb/test/Shell/Register/Core/x86-64-netbsd-addr.test
@@ -0,0 +1,18 @@
+# RUN: %lldb -b -s %s -c %p/Inputs/x86-64-netbsd.core | FileCheck %s
+
+register read --all
+# CHECK-DAG: rip = 0x0000000000400c47
+# CHECK-DAG: rflags = 0x0000000000010212
+# CHECK-DAG: cs = 0x0000000000000047
+# CHECK-DAG: fs = 0x0000000000000000
+# CHECK-DAG: gs = 0x0000000000000000
+# CHECK-DAG: ss = 0x000000000000003f
+# CHECK-DAG: ds = 0x0000000000000023
+# CHECK-DAG: es = 0x0000000000000023
+
+# CHECK-DAG: fiseg = 0x00000000
+# CHECK-DAG: fioff = 0x00400c06
+# CHECK-DAG: fip = 0x0000000000400c06
+# CHECK-DAG: foseg = 0x00000000
+# CHECK-DAG: fooff = 0xfff93078
+# CHECK-DAG: fdp = 0x00000000fff93078
diff --git a/lldb/test/Shell/Register/Core/x86-64-netbsd-fp.test b/lldb/test/Shell/Register/Core/x86-64-netbsd-fp.test
new file mode 100644
--- /dev/null
+++ b/lldb/test/Shell/Register/Core/x86-64-netbsd-fp.test
@@ -0,0 +1,3 @@
+# RUN: %lldb -b -s %s -c %p/Inputs/x86-64-netbsd.core | FileCheck %p/Inputs/x86-fp.check
+
+register read --all
diff --git a/lldb/test/Shell/Register/Core/x86-64-netbsd-gp.test b/lldb/test/Shell/Register/Core/x86-64-netbsd-gp.test
new file mode 100644
--- /dev/null
+++ b/lldb/test/Shell/Register/Core/x86-64-netbsd-gp.test
@@ -0,0 +1,3 @@
+# RUN: %lldb -b -s %s -c %p/Inputs/x86-64-netbsd.core | FileCheck %p/Inputs/x86-64-gp-hixmm.check
+
+register read --all