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9055ffd76e
microMIPS J & JAL instructions perform a jump in a 128MB region and 5 top bits of the address need to be preserved. This is different behavior compared to standard mips systems, where the jump is executed within a 256MB region. Note that microMIPS32 instruction set documentation appears to have inconsistent information regarding JALX32 instruction - it is written in the doc that: "To execute a procedure call within the current 256 MB-aligned region (...) The low 26 bits of the target address is the target field shifted left 2 bits." But the target address is already 26 bits. Moreover, the operation description indicates that 28 bits are copied, so the statement about use of 26 bits is _most likely_ incorrect and the corresponding code remains the same as for standard mips instruction set. Signed-off-by: Marcin Nowakowski <marcin.nowakowski@fungible.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20230216051717.3911212-2-marcin.nowakowski@fungible.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> |
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| .. | ||
| sysemu | ||
| tcg | ||
| cpu-defs.c.inc | ||
| cpu-param.h | ||
| cpu-qom.h | ||
| cpu.c | ||
| cpu.h | ||
| fpu.c | ||
| fpu_helper.h | ||
| gdbstub.c | ||
| helper.h | ||
| internal.h | ||
| Kconfig | ||
| kvm.c | ||
| kvm_mips.h | ||
| meson.build | ||
| mips-defs.h | ||
| msa.c | ||