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authorSebastian Huber <sebastian.huber@embedded-brains.de>2019-05-15 07:17:51 +0200
committerSebastian Huber <sebastian.huber@embedded-brains.de>2019-05-15 07:17:51 +0200
commit7f514405fe9aca8f84e004eb1c37551e812fcf01 (patch)
tree9981091018c92bec036145fb306a71301c4613de /cpu-supplement
parent9868f93ec47e98b05481e66c99caab364dda5451 (diff)
downloadrtems-docs-7f514405fe9aca8f84e004eb1c37551e812fcf01.tar.bz2
cpu-supplement: Update ARM multilibs
Update #3747.
Diffstat (limited to 'cpu-supplement')
-rw-r--r--cpu-supplement/arm.rst24
1 files changed, 10 insertions, 14 deletions
diff --git a/cpu-supplement/arm.rst b/cpu-supplement/arm.rst
index ac4681b..63aa532 100644
--- a/cpu-supplement/arm.rst
+++ b/cpu-supplement/arm.rst
@@ -77,11 +77,15 @@ The following multilibs are available:
#. ``thumb/armv7-r/vfpv3-d16/hard``: ARMv7-R, Thumb-2 instruction set with
hard-float ABI VFP-D16 support
-#. ``thumb/armv7-m``: ARMv7-M, Thumb-2 instruction set with hardware
- integer division (SDIV/UDIV)
+#. ``thumb/cortex-m3``: Cortex-M3, Thumb-2 instruction set with hardware
+ integer division (SDIV/UDIV) and a fix for Cortex-M3 Errata 602117.
-#. ``thumb/armv7-m/fpv4-sp-d16``: ARMv7-M, Thumb-2 instruction set with
- hardware integer division (SDIV/UDIV) and hard-float ABI FPv4-SP support
+#. ``thumb/cortex-m4``: Cortex-M4, Thumb-2 instruction set with hardware
+ integer division (SDIV/UDIV) and DSP instructions
+
+#. ``thumb/cortex-m4/fpv4-sp-d16``: Cortex-M4, Thumb-2 instruction set with
+ hardware integer division (SDIV/UDIV), DSP instructions and hard-float ABI
+ FPv4-SP support
#. ``thumb/cortex-m7/fpv5-d16``: Cortex-M7, Thumb-2 instruction set with
hard-float ABI and FPv5-D16 support
@@ -91,21 +95,13 @@ The following multilibs are available:
#. ``eb/thumb/armv7-r/vfpv3-d16/hard``: ARMv7-R, Big-endian Thumb-2 instruction
set with hard-float ABI VFP-D16 support
-Multilib 1., 2. and 3. support the standard ARM7TDMI and ARM926EJ-S processors.
+Multilib 1., 2. and 3. support the legacy ARM7TDMI and ARM926EJ-S processors.
Multilib 4. supports the Cortex-M0 and Cortex-M1 cores.
-Multilib 9. supports the Cortex-M3 and Cortex-M4 cores, which have a special
-hardware integer division instruction (this is not present in the A and R
-profiles).
-
-Multilib 10. supports the Cortex-M4 cores with a floating point unit.
-
-Multilib 11. supports the Cortex-M7 cores with a floating point unit.
-
Multilib 5. and 6. support the Cortex-A processors.
-Multilib 7., 8., 12. and 13. support the Cortex-R processors. Here also
+Multilib 7., 8., 13. and 14. support the Cortex-R processors. Here also
big-endian variants are available.
Use for example the following GCC options: