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[Qemu-arm] [RFC PATCH 0/2] target: Build with CONFIG_SEMIHOSTING disable
From: |
Philippe Mathieu-Daudé |
Subject: |
[Qemu-arm] [RFC PATCH 0/2] target: Build with CONFIG_SEMIHOSTING disabled |
Date: |
Fri, 31 May 2019 17:47:33 +0200 |
Amusingly Miroslav and myself hit this issue at the same time.
Currently there is no way to pass a CONFIG_X to sources in target/,
except via a Makefile rule (and filling with stubs).
Paolo says this is on purpose, CONFIG_X selectors are meant for
devices and we try to avoid having config-devices.mak in
config-target.h.
Some know (arch-specific) limitations are:
- MIPS ITU is accessed by coprocessor instr (ISA feature)
- MIPS timer is accessed by coprocessor instr (ISA feature)
- MIPS semihosting (ISA feature?)
- ARM semihosting (ISA feature?)
- ARMv7 NVIC (device)
This series attempt to fix this the most trivial way, adding
stubs for unreachable code.
Philippe Mathieu-Daudé (2):
target/arm: Add stubs to build with CONFIG_SEMIHOSTING disabled
target/mips: Add stubs to build with CONFIG_SEMIHOSTING disabled
target/arm/Makefile.objs | 3 ++-
target/arm/arm-semi-stubs.c | 21 +++++++++++++++++++++
target/mips/Makefile.objs | 3 ++-
target/mips/mips-semi-stubs.c | 23 +++++++++++++++++++++++
4 files changed, 48 insertions(+), 2 deletions(-)
create mode 100644 target/arm/arm-semi-stubs.c
create mode 100644 target/mips/mips-semi-stubs.c
--
2.20.1