Create new baremetal toolchain machines

Baremetal toolchain machines are specific to creating a very specific Xilinx
multilib toolchain configuration.  These are not expected to be functional
MACHINE parameters for anything except SDK building.

The expected usage is:

MACHINE=<value> DISTRO=xilinx-standalone bitbake meta-toolchain

Add aarch32-tc
 Multilibs:
  base: (none)
  arm/v5te/softfp: -marm -march=armv5te+fp -mfloat-abi=softfp
  arm/v5te/hard: -marm -march=armv5te+fp -mfloat-abi=hard
  thumb/nofp: -mthumb -mfloat-abi=soft
  thumb/v7/nofp: -mthumb -march=armv7 -mfloat-abi=soft
  thumb/v7+fp/softfp: -mthumb -march=armv7+fp -mfloat-abi=softfp
  thumb/v7+fp/hard: -mthumb -march=armv7+fp -mfloat-abi=hard
  thumb/v7-a/nofp: -mthumb -march=armv7-a -mfloat-abi=soft
  thumb/v7-a+fp/softfp: -mthumb -march=armv7-a+fp -mfloat-abi=softfp
  thumb/v7-a+fp/hard: -mthumb -march=armv7-a+fp -mfloat-abi=hard
  thumb/v7-a+simd/softfp: -mthumb -march=armv7-a+simd -mfloat-abi=softfp
  thumb/v7-a+simd/hard: -mthumb -march=armv7-a+simd -mfloat-abi=hard
  thumb/v7ve+simd/softfp: -mthumb -march=armv7ve+simd -mfloat-abi=softfp
  thumb/v7ve+simd/hard: -mthumb -march=armv7ve+simd -mfloat-abi=hard
  thumb/v8-a/nofp: -mthumb -march=armv8-a -mfloat-abi=soft
  thumb/v8-a+simd/softfp: -mthumb -march=armv8-a+simd -mfloat-abi=softfp
  thumb/v8-a+simd/hard:  -mthumb -march=armv8-a+simd -mfloat-abi=hard

Add aarch64-tc
 Multilibs:
  Base: (none)
  ilp32: -mabi=ilp32

  - ilp32 requires a custom machine dict
    - Add xlnx-standalone.bbclass
    - Enable with PACKAGEQA_EXTRA_MACHDEFFUNCS

Add arm-rm-tc
 Multilibs:
  Base: (none)
  arm/v5te/softfp: -marm -march=armv5te+fp -mfloat-abi=softfp
  arm/v5te/hard: -marm -march=armv5te+fp -mfloat-abi=hard
  thumb/nofp: -mthumb -mfloat-abi=soft
  thumb/v7/nofp: -mthumb -march=armv7 -mfloat-abi=soft
  thumb/v7+fp/softfp: -mthumb -march=armv7+fp -mfloat-abi=softfp
  thumb/v7+fp/hard: -mthumb -march=armv7+fp -mfloat-abi=hard
  thumb/v6-m/nofp: -mthumb -march=armv6s-m -mfloat-abi=soft
  thumb/v7-m/nofp: -mthumb -march=armv7-m -mfloat-abi=soft
  thumb/v7e-m/nofp: -mthumb -march=armv7e-m -mfloat-abi=soft
  thumb/v7e-m+fp/softfp: -mthumb -march=armv7e-m+fp -mfloat-abi=softfp
  thumb/v7e-m+fp/hard: -mthumb -march=armv7e-m+fp -mfloat-abi=hard
  thumb/v7e-m+dp/softfp: -mthumb -march=armv7e-m+fp.dp -mfloat-abi=softfp
  thumb/v7e-m+dp/hard: -mthumb -march=armv7e-m+fp.dp -mfloat-abi=hard
  thumb/v8-m.base/nofp: -mthumb -march=armv8-m.base -mfloat-abi=soft
  thumb/v8-m.main/nofp: -mthumb -march=armv8-m.main -mfloat-abi=soft
  thumb/v8-m.main+fp/softfp: -mthumb -march=armv8-m.main+fp -mfloat-abi=softfp
  thumb/v8-m.main+fp/hard: -mthumb -march=armv8-m.main+fp -mfloat-abi=hard
  thumb/v8-m.main+dp/softfp: -mthumb -march=armv8-m.main+fp.dp -mfloat-abi=softfp
  thumb/v8-m.main+dp/hard: -mthumb -march=armv8-m.main+fp.dp -mfloat-abi=hard

Add microblaze-tc
 Multilibs:
  base: (none)
  bs: -mxl-barrel-shift
  le: -mlittle-endian
  m: -mno-xl-soft-mul
  m/mh: -mno-xl-soft-mul -mxl-multiply-high
  le/m: -mlittle-endian -mno-xl-soft-mul
  le/m/mh: -mlittle-endian -mno-xl-soft-mul -mxl-multiply-high
  bs/le: -mxl-barrel-shift -mlittle-endian
  bs/m: -mxl-barrel-shift -mno-xl-soft-mul
  bs/m/mh: -mxl-barrel-shift -mno-xl-soft-mul -mxl-multiply-high
  bs/le/m: -mxl-barrel-shift -mlittle-endian -mno-xl-soft-mul
  bs/le/m/mh: -mxl-barrel-shift -mlittle-endian -mno-xl-soft-mul -mxl-multiply-high
  m64/le: -m64 -mlittle-endian
  m64/le/m: -m64 -mlittle-endian -mno-xl-soft-mul
  m64/le/m/mh: -m64 -mlittle-endian -mno-xl-soft-mul -mxl-multiply-high
  m64/bs/le: -m64 -mxl-barrel-shift -mlittle-endian
  m64/bs/le/m: -m64 -mxl-barrel-shift -mlittle-endian -mno-xl-soft-mul
  m64/bs/le/m/mh: -m64 -mxl-barrel-shift -mlittle-endian -mno-xl-soft-mul -mxl-multiply-high

  - 64-bit MicroBlaze requires a custom machine dict
    - Add xlnx-standalone.bbclass
    - Enable with PACKAGEQA_EXTRA_MACHDEFFUNCS

Signed-off-by: Mark Hatle <mark.hatle@xilinx.com>

Please enter the commit message for your changes. Lines starting
with '#' will be ignored, and an empty message aborts the commit.
Date:      Thu Jan 30 12:17:59 2020 -0800
On branch multilib-baremetal
Your branch is ahead of 'xilinx/master-next' by 2 commits.
  (use "git push" to publish your local commits)
Changes to be committed:

1 files changed, 16 insertions, 0 deletions

diff --git a/meta-xilinx-bsp/classes/xlnx-standalone.bbclass b/meta-xilinx-bsp/classes/xlnx-standalone.bbclass
new file mode 100644
index 00000000..9232b1ef
--- /dev/null
+++ b/meta-xilinx-bsp/classes/xlnx-standalone.bbclass
@@ -0,0 +1,16 @@
+# Only enabled when ilp32 is enabled.
+def xlnx_ilp32_dict(machdata, d):
+    machdata["elf"] = {
+                        "aarch64" :   (183,    0,    0,          True,          32),
+                        "aarch64_be" :(183,    0,    0,          False,         32),
+                      }
+    return machdata
+
+# Only enabled when microblaze64 is enabled.
+def xlnx_mb64_dict(machdata, d):
+    machdata["elf"] = {
+                        "microblaze":  (189,   0,    0,          False,         64),
+                        "microblazeeb":(189,   0,    0,          False,         64),
+                        "microblazeel":(189,   0,    0,          True,          64),
+                      }
+    return machdata