Commit Graph

2 Commits

Author SHA1 Message Date
Leon Alrae
2c44b19c19 target-mips: convert host to MIPS errno values when required
Convert only errno values which can be returned by system calls in
mips-semi.c and are not generic to all archs.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
2015-06-26 09:08:50 +01:00
Leon Alrae
3b3c1694cf target-mips: add Unified Hosting Interface (UHI) support
Add UHI semihosting support for MIPS. QEMU run with "-semihosting" option
will alter the behaviour of SDBBP 1 instruction -- UHI operation will be
called instead of generating a debug exception.

Also tweak Malta's pseudo-bootloader. On CPU reset the $4 register is set
to -1 if semihosting arguments are passed to indicate that the UHI
operations should be used to obtain input arguments.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
2015-06-26 09:08:50 +01:00