ARM Compilation Tools. The ARM Compiler toolchain, previously known as ARM RealView Compilation tools include: The ARM C/C++ Compiler (armcc) Microlib. List of the fromelf error and warning messages Q0105E Base and/or size too. Q0108E Could not create output file. RealView Compilation Tools Errors and. Gcc-arm-linux-gnueabi command not found. most tools will automatically use proper compiler for ARM compilation. To invoke the tools execute the following: arm. Knowledgebase Articles about the Keil ARM. MOV #CONSTANT GENERATES C197 ERROR MESSAGE ARM: OLD COMPILATION TOOLS IN. ERROR 'SARMCM3.DLL' NOT FOUND.
3.18.4 ARM Options. For some ARM implementations. and functions whose definitions have already been compiled within the current compilation unit are not. ARM Compiler v4.1 patch is the compilation tools component of RealView Development Suite. The ARM Compiler toolchain v4.1. The ARM tools do not generate these.
ARM Options - Using the GNU Compiler Collection (GCC)- mabi=name. Generate code for the specified ABI. Permissible values are: ‘apcs- gnu’. Generate a stack frame that is compliant with the ARM Procedure Call.
Standard for all functions, even if this is not strictly necessary for. Specifying - fomit- frame- pointer. The default is - mno- apcs- frame. This option is deprecated. This is a synonym for - mapcs- frame and is deprecated.
Generate code that supports calling between the ARM and Thumb. Without this option, on pre- v. The. default is - mno- thumb- interwork, since slightly larger code. In AAPCS. configurations this option is meaningless.
Prevent the reordering of instructions in the function prologue, or the. This means that all functions start with a recognizable set.
The. default is - msched- prolog. Specifies which floating- point ABI to use. Permissible values. Specifying ‘soft’ causes GCC to generate output containing. FPU- specific calling conventions.
The default depends on the specific target configuration. Note that. the hard- float and soft- float ABIs are not link- compatible; you must. ABI, and link with a. Generate code for a processor running in little- endian mode. This is. the default for all standard configurations. Generate code for a processor running in big- endian mode; the default is.
This specifies the name of the target ARM architecture. GCC uses this. name to determine what kind of instructions it can emit when generating. This option can be used in conjunction with or instead.
Permissible names are: ‘armv. ARMv. 8- A. architecture together with the optional CRC3. At present, this feature is only supported on. GNU/Linux, and not all architectures are recognized. If the auto- detect.
This option specifies the name of the target ARM processor for. GCC should tune the performance of the code.
For some ARM implementations better performance can be obtained by using. Permissible names are: ‘arm. Additionally, this option can specify that GCC should tune the performance.
LITTLE system. Permissible names are. GCC should tune the. The aim is to generate code that run well on the current most popular. CPUs in the. range, and avoiding performance pitfalls of other CPUs.
The effects of. this option may change in future GCC versions as CPU models come and go. CPU. of the build computer. At present, this feature is only supported on.
GNU/Linux, and not all architectures are recognized. If the auto- detect is. This specifies the name of the target ARM processor. GCC uses this name. ARM architecture (as if specified. ARM processor type for which to tune for.
Where this option. Permissible names for this option are the same as those for. See - mtune for more information. CPU. of the build computer. At present, this feature is only supported on.
GNU/Linux, and not all architectures are recognized. If the auto- detect. This specifies what floating- point hardware (or hardware emulation) is. Permissible names are: ‘vfp’, ‘vfpv. If - msoft- float is specified this specifies the format of. If the selected floating- point hardware includes the NEON extension. GCC's auto- vectorization pass unless.
This is. because NEON hardware does not fully implement the IEEE 7. NEON instructions may lead to a loss of precision. You can also set the fpu name at function level by using the target("fpu=") function attributes (see ARM Function Attributes) or pragmas (see Function Specific Option Pragmas).
Specify the format of the __fp. Permissible names are ‘none’, ‘ieee’, and ‘alternative’. See Half- Precision, for more information. The sizes of all structures and unions are rounded up to a multiple. Permissible values are 8, 3. The default value varies for different toolchains. For the COFF. targeted toolchain the default value is 8.
A value of 6. 4 is only allowed. ABI supports it. Specifying a larger number can produce faster, more efficient code, but. Different values are potentially. Code compiled with one value cannot necessarily expect to. Generate a call to the function abort at the end of a.
It is executed if the function tries to. Tells the compiler to perform function calls by first loading the. This switch is needed if the target function. Even if this switch is enabled, not all function calls are turned.
The heuristic is that static functions, functions. The exceptions to this rule are.
This feature is not enabled by default. Specifying. - mno- long- calls restores the default behavior, as does. Note these switches have no effect on how. Treat the register used for PIC addressing as read- only, rather than.
The runtime system is. Specify the register to be used for PIC addressing. For standard PIC base case, the default is any suitable register. For single PIC base case, the default is. R9’ if target is EABI based or stack- checking is enabled. R1. 0’. - mpic- data- is- text- relative. Assume that each data segments are relative to text segment at load time.
Therefore, it permits addressing data using PC- relative operations. This option is on by default for targets other than Vx. Works RTP. - mpoke- function- name. Write the name of each function into the text section, directly. The generated code is similar to this. When performing a stack backtrace, code can inspect the value of.
If the trace function then looks at. Select between generating code that executes in ARM and Thumb. The default for most configurations is to generate code. ARM state, but the default can be changed by. GCC with the - -with- mode=state.
You can also override the ARM and Thumb mode for each function. ARM Function Attributes) or pragmas (see Function Specific Option Pragmas). Generate a stack frame that is compliant with the Thumb Procedure Call. Standard for all non- leaf functions. A leaf function is one that does. The default is - mno- tpcs- frame.
Generate a stack frame that is compliant with the Thumb Procedure Call. Standard for all leaf functions. A leaf function is one that does. The default is - mno- apcs- leaf- frame.
Gives all externally visible functions in the file being compiled an ARM. Thumb mode before executing the. This allows these functions to be called from. This option is not valid in AAPCS configurations. Allows calls via function pointers (including virtual functions) to. There is a small overhead in the cost.
This option. is not valid in AAPCS configurations because interworking is enabled. Specify the access model for the thread local storage pointer.
The valid. models are ‘soft’, which generates calls to __aeabi_read_tp. The default setting is. Specify the dialect to use for accessing thread local storage.
Two. dialects are supported—‘gnu’ and ‘gnu. The. ‘gnu’ dialect selects the original GNU scheme for supporting. TLS models. The ‘gnu.
GNU descriptor scheme, which provides better performance. The GNU descriptor scheme is compatible with.
Initial and local exec TLS models are unaffected by. Only generate absolute relocations on word- sized values (i. R_ARM_ABS3. 2). This is enabled by default on targets (u.
Clinux, Symbian. OS) where the runtime. PIC. - mfix- cortex- m.
Some Cortex- M3 cores can cause data corruption when ldrd instructions. This option avoids. This option is enabled by default when. Enables (or disables) reading and writing of 1. By default. unaligned access is disabled for all pre- ARMv. ARMv. 6- M. architectures, and enabled for all other architectures. If unaligned. access is not enabled then words in packed data structures are.
The ARM attribute Tag_CPU_unaligned_access is set in the. If unaligned access is enabled then the. ARM_FEATURE_UNALIGNED is also. Enables using Neon to handle scalar 6. This is. disabled by default since the cost of moving data from core registers. Neon is high. - mslow- flash- data.
Assume loading data from flash is slower than fetching instruction. Therefore literal load is minimized for better performance. This option is only supported when compiling for ARMv.
M- profile and. off by default. Assume inline assembler is using unified asm syntax.
The default is. currently off which implies divided syntax. This option has no impact. Thumb. 2. However, this may change in future releases of GCC.
Divided syntax should be considered deprecated. Restricts generation of IT blocks to conform to the rules of ARMv.
IT blocks can only contain a single 1. This option is on by default for ARMv. Thumb mode. - mprint- tune- info. Print CPU tuning information as comment in assembler file. This is. an option used only for regression testing of the compiler and not. This option is disabled.