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2015-10-21target-xtensa: implement depbits instructionMax Filippov
This option provides an instruction for depositing a bit field from the least significant position of one register to an arbitrary position in another register. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2015-07-06target-xtensa: fix gdb register map constructionMax Filippov
Due to different gdb overlay organization between windowed/call0 configurations core import script doesn't always work correctly. Simplify the script: always copy complete gdb register map from overlay, count registers at core registerstion time. Update existing cores. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2015-07-06target-xtensa: add 64-bit floating point registersMax Filippov
Xtensa ISA got specification for 64-bit floating point registers and opcodes, see ISA, 4.3.11 "Floating point coprocessor option". Add 64-bit FP registers. Although 64-bit floating point is currently not supported by xtensa translator, these registers need to be reported to gdb with proper size, otherwise it wouldn't find other registers. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2014-11-03target-xtensa: fix build for cores w/o windowed registersMax Filippov
Cores without windowed registers don't have window overflow/underflow vectors. Move these vectors to a separate group defined conditionally. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2014-11-03target-xtensa: add definition for XTHAL_INTTYPE_PROFILINGMax Filippov
There's new interrupt type in the recent Xtensa releases that may appear in configuration overlay. Add definition so that new cores that use it could be automatically imported. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2014-02-24target-xtensa: provide HW confg ID registersMax Filippov
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2014-02-24target-xtensa: refactor standard core configurationMax Filippov
Coalesce all standard configuration sections into single DEFAULT_SECTIONS macro for all cores. This allows to add new features in a single place: overlay_tool.h Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2012-12-08target-xtensa: implement MISC SRMax Filippov
The Miscellaneous Special Registers Option provides zero to four scratch registers within the processor readable and writable by RSR, WSR, and XSR. These registers are privileged. They may be useful for some application-specific exception and interrupt processing tasks in the kernel. The MISC registers are undefined after reset. See ISA, 4.7.3 for details. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-12-08target-xtensa: restrict available SRs by enabled optionsMax Filippov
Beginning with the RA-2004.1 release, SR access instructions (rsr, wsr, xsr) are associated with their corresponding SR and raise illegal opcode exception in case the register is not configured for the core. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-12-08target-xtensa: implement CACHEATTR SRMax Filippov
In XEA1, the Options for Memory Protection and Translation and the corresponding TLB management instructions are not available. Instead, functionality similar to the Region Protection Option is available through the cache attribute register. See ISA, A.2.14 for details. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-12-08target-xtensa: implement ATOMCTL SRMax Filippov
ATOMCTL SR controls s32c1i opcode behavior depending on targeted memory type. See ISA, 4.3.12.4 for details. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-09-22target-xtensa: handle boolean option in overlaysMax Filippov
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-02-20target-xtensa: add DEBUG_SECTION to overlay toolMax Filippov
Fill debug configuration from overlay definitions in the DEBUG_SECTION. Add DEBUG_SECTION to DC232B and FSF cores. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2012-02-18target-xtensa: define TLB_TEMPLATE for MMU-less coresMax Filippov
TLB_TEMPLATE macro specifies TLB geometry in the core configuration. Make TLB_TEMPLATE available for region protection core variants, defining 1 way ITLB and DTLB with 8 entries each. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2011-11-26target-xtensa: fix MMUv3 initializationMax Filippov
- ITLB/DTLB ways 5 and 6 have 4 and 8 entries respectively; - ITLB/DTLB way 6 attr field is set to 3 on reset. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-11-02target-xtensa: handle cache options in the overlay toolMax Filippov
Cache options must be enabled for the cores that have cache to avoid illegal instruction exceptions. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2011-10-16target-xtensa: extract core configuration from overlayMax Filippov
Introduce overlay_tool.h that defines core configuration blocks from data available in the linux architecture variant overlay. Overlay data is automatically generated in the core configuration process by Tensilica tools and can be directly converted to qemu xtensa core description by overlay_tool.h Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
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