This patch removes the instruction set check to make the msr APSR_nzcvq,
ip instruction only execute if Thumb2 is used.
The APSR is a subset of the bits of the CPSR
(B.1.3.3 of the Arm v7 A and R ARM [1]) and is only available for A and
R profiles.
However in section B.9.3.11 of the same document we see that:
"In the A and R profiles, APSR_nzcvq is the same as CPSR_f"
"ARM recommends the APSR forms when only the N, Z, C, V, Q, and GE[3:0]
bits are being written."
This patch also make those files assemble for Armv8-M Mainline
architecture profile.
The builtins were cross-compiled for Arm, Aarch64 and Armv6-M, Armv7-M
and Armv7E-M targets.
Cross-compiled tests were executed for Arm target.
[1]: https://developer.arm.com/docs/ddi0406/latest/arm-architecture-reference-manual-armv7-a-and-armv7-r-edition
Patch by hug-dev (Hugues de Valon).
Differential Revision: https://reviews.llvm.org/D51854
llvm-svn: 343601
Summary:
clang does not assemble files in thumb mode unless .thumb declaration
is present. Add .thumb/.arm decl to _FUNCTION macros to ensure that
files are assembled correctly.
Also add a fix to ensure that armv7k-watchos can assemble the
aeabi_c{f|d}cmp.S files.
Fixes PR 34715.
Reviewers: compnerd, peter.smith, srhines, weimingz, rengolin, efriedma, t.p.northover, fjricci
Reviewed By: compnerd
Subscribers: aemerson, javed.absar, llvm-commits, kristof.beyls
Differential Revision: https://reviews.llvm.org/D38390
llvm-svn: 314718
Summary:
MSR instruction in Thumb2 does not support immediate operand.
Fix this by moving the condition for V7-M to Thumb2 since V7-M support
Thumb2 only. With this change, aeabi_cfcmp.s and aeabi_cdcmp.S files can
be assembled in Thumb2 mode. (This is split out from the review D38227).
Reviewers: compnerd, peter.smith, srhines, weimingz, rengolin, kristof.beyls
Reviewed By: compnerd
Subscribers: aemerson, javed.absar, llvm-commits
Differential Revision: https://reviews.llvm.org/D38268
llvm-svn: 314284
Summary:
Value of __ARM_ARCH_ISA_THUMB isn't based on the actual compilation
mode (-mthumb, -marm), it reflect's capability of given CPU.
Due to this:
•use tbumb and thumb2 insteand of __ARM_ARCH_ISA_THUMB
•use '.thumb' directive consistently in all affected files
•decorate all thumb functions using DEFINE_COMPILERRT_THUMB_FUNCTION()
(This is based off Michal's patch https://reviews.llvm.org/D30938)
Reviewers: dim, rengolin, compnerd, strejda
Reviewed By: compnerd
Subscribers: peter.smith, kubamracek, mgorny, javed.absar, kristof.beyls, jamesduley, aemerson, llvm-commits
Differential Revision: https://reviews.llvm.org/D31220
llvm-svn: 310884
These routines do not require executable stacks. However, by default ELFish
linkers may assume an executable stack on GNUish environments (and some non-GNU
ones too!). The GNU extension to add a note to indicate a non-executable stack
is honoured by these environments to mark the stack as non-executable (the
compiler normally emits this directive on appropriate targets whenever
possible). This allows normal builds from getting executable stacks due to
linking to the compiler rt builtins.
llvm-svn: 273500
Kristina Brooks