Commit Graph

18 Commits

Author SHA1 Message Date
Michael Brown
9bb2068636 [efi] Remove redundant EFI_BOOT_FILE definitions
As of commit 79c0173 ("[build] Create util/genfsimg for building
filesystem-based images"), the EFI boot file name for each CPU
architecture is defined within the genfsimg script itself, rather than
being passed in as a Makefile parameter.

Remove the now-redundant Makefile definitions for EFI_BOOT_FILE.

Reported-by: Christian I. Nilsson <nikize@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
2024-09-16 11:04:52 +01:00
Michael Brown
5de5d4626e [libc] Centralise architecture-independent portions of setjmp.h
The definitions of the setjmp() and longjmp() functions are common to
all architectures, with only the definition of the jump buffer
structure being architecture-specific.

Move the architecture-specific portions to bits/setjmp.h and provide a
common setjmp.h for the function definitions.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
2024-09-12 15:01:04 +01:00
Michael Brown
2b82007571 [gdb] Allow CPU architectures to omit support for GDB
Move the <gdbmach.h> file to <bits/gdbmach.h>, and provide a common
dummy implementation for all architectures that have not yet
implemented support for GDB.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
2024-09-05 13:00:39 +01:00
Michael Brown
804f35cb5a [build] Centralise dummy architecture-specific headers
Simplify the process of adding a new CPU architecture by providing
common implementations of typically empty architecture-specific header
files.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
2024-09-03 17:32:26 +01:00
Michael Brown
26d3ef062b [crypto] Allow multiplicand and multiplier to differ in size
Big integer multiplication is currently used only as part of modular
exponentiation, where both multiplicand and multiplier will be the
same size.

Relax this requirement to allow for the use of big integer
multiplication in other contexts.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
2024-01-16 16:09:16 +00:00
Michael Brown
e66552eeed [build] Remove unnecessary ".text" directives
The .text directive is entirely redundant when followed by a .section
directive giving an explicit section name and attributes.

Remove these unnecessary directives to simplify the code.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
2024-01-14 11:51:16 +00:00
Michael Brown
c6901792f0 [build] Allow for per-architecture unprefixed constant operand modifier
Over the years, the undocumented operand modifier used to produce the
unprefixed constant values in __einfo_error() has varied from "%c0" to
"%a0" in commit 1a77466 ("[build] Fix use of inline assembly on GCC
4.8 ARM64 builds") and back to "%c0" in commit 3fb3ffc ("[build] Fix
use of inline assembly on GCC 8 ARM64 builds"), according to the
evolving demands of the toolchain.

LoongArch64 suffers from a similar issue: GCC 13 will allow either,
but the currently released GCC 12 allows only the "%a0" form.

Introduce a macro ASM_NO_PREFIX, defined in bits/compiler.h, to
abstract away this difference and allow different architectures to use
different operand modifiers.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
2023-02-05 23:55:14 +00:00
Michael Brown
fcfb70bfb2 [arm] Inhibit linker warnings about an implied executable stack
Some versions of the 32-bit ARM linker seem to treat the absence of a
.note.GNU-stack section as implying an executable stack, and will
print a warning that this is deprecated behaviour.

Silence the warning by adding a .note.GNU-stack section to each
assembly file and retaining the sections in the Linux linker script.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
2023-01-23 12:55:44 +00:00
Michael Brown
c5e1f007ac [arm] Use -mfloat-abi=soft only for EFI builds
The EFI ABI requires the use of -mfloat-abi=soft, but other platforms
may require -mfloat-abi=hard.

Allow for this by using -mfloat-abi=soft only for EFI builds.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
2023-01-23 01:32:14 +00:00
Michael Brown
9de6c45dd3 [arm] Use -fno-short-enums for all 32-bit ARM builds
The EFI ABI requires the use of -fno-short-enums, and the EDK2 headers
will perform a compile-time check that enums are 32 bits.

The EDK2 headers may be included even in builds for non-EFI platforms,
and so the -fno-short-enums flag must be used in all 32-bit ARM
builds.  Fortunately, nothing else currently cares about enum sizes.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
2023-01-23 01:26:46 +00:00
Michael Brown
2061d658b3 [dhcp] Simplify platform-specific client architecture definitions
Move the platform-specific DHCP client architecture definitions to
header files of the form <ipxe/$(PLATFORM)/dhcparch.h>.  This
simplifies the directory structure and allows the otherwise unused
arch/$(ARCH)/include/$(PLATFORM) to be removed from the include
directory search path, which avoids the confusing situation in which a
header file may potentially be accessed through more than one path.

For Linux userspace binaries on any architecture, use the EFI values
for that architecture by delegating to the EFI header file.  This
avoids the need to explicitly select values for Linux userspace
binaries for each architecture.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
2023-01-22 17:45:34 +00:00
Michael Brown
8866c919f8 [build] Fix ARM32 EFI builds with current EDK2 headers
EDK2 commit 6440385 ("MdePkg/Include: Add enumeration size checks to
Base.h") enforced the UEFI specification mandate that enums should
always be 32 bits.  This revealed a latent bug in iPXE, which does not
build with -fno-short-enums.

Fix by adding -fno-short-enums to CFLAGS for ARM32 EFI builds.

Reported-by: Benjamin S. Allen <bsallen@alcf.anl.gov>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
2017-07-28 15:46:06 +01:00
Michael Brown
aeb6203811 [dhcp] Automatically generate vendor class identifier string
The vendor class identifier strings in DHCP_ARCH_VENDOR_CLASS_ID are
out of sync with the (correct) client architecture values in
DHCP_ARCH_CLIENT_ARCHITECTURE.

Fix by removing all definitions of DHCP_ARCH_VENDOR_CLASS_ID, and
instead generating the vendor class identifier string automatically
based on DHCP_ARCH_CLIENT_ARCHITECTURE and DHCP_ARCH_CLIENT_NDI.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
2016-07-04 15:07:05 +01:00
Michael Brown
3d9f094022 [dhcp] Allow for variable encapsulation of architecture-specific options
DHCPv4 and DHCPv6 share some values in common for the architecture-
specific options (such as the client system architecture type), but
use different encapsulations: DHCPv4 has a single byte for the option
length while DHCPv6 has a 16-bit field for the option length.

Move the containing DHCP_OPTION() and related wrappers from the
individual dhcp_arch.h files to dhcp.c, thus allowing for the
architecture-specific values to be reused in dhcpv6.c.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
2016-07-04 13:15:05 +01:00
Michael Brown
31d4a7b8db [arm] Use correct DHCP client architecture values
Signed-off-by: Michael Brown <mcb30@ipxe.org>
2016-05-26 13:43:33 +01:00
Michael Brown
47931a4de5 [arm] Add optimised TCP/IP checksumming for 64-bit ARM
Signed-off-by: Michael Brown <mcb30@ipxe.org>
2016-05-11 08:16:36 +01:00
Michael Brown
95716ece91 [arm] Add optimised string functions for 64-bit ARM
Signed-off-by: Michael Brown <mcb30@ipxe.org>
2016-05-11 08:15:52 +01:00
Michael Brown
edea3a434c [arm] Split out 32-bit-specific code to arch/arm32
Signed-off-by: Michael Brown <mcb30@ipxe.org>
2016-05-08 00:18:35 +01:00