06dd94e843
Extend MTE gdbstub tests to also run in system mode (share tests between user mode and system mode). The tests will only run if a version of GDB that supports MTE on baremetal is available in the test environment and if available compiler supports the 'memtag' flag (-march=armv8.5-a+memtag). For the tests running in system mode, a page that supports MTE ops. is necessary. Therefore, an MTE-enabled page is made available (mapped) in the third 2 MB chunk of the second 1 GB space in the flat mapping set in boot.S. A new binary, mte.S, is also introduced for the tests. It links against boot.S and is executed by QEMU in system mode. Signed-off-by: Gustavo Romero <gustavo.romero@linaro.org> Message-Id: <20240906143316.657436-6-gustavo.romero@linaro.org> [AJB: fix stray _] Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20240910173900.4154726-11-alex.bennee@linaro.org>
34 lines
793 B
Plaintext
34 lines
793 B
Plaintext
ENTRY(__start)
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MEMORY {
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/* On virt machine RAM starts at 1 GiB. */
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/* Align text and rodata to the 1st 2 MiB chunk. */
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TXT (rx) : ORIGIN = 1 << 30, LENGTH = 2M
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/* Align r/w data to the 2nd 2 MiB chunk. */
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DAT (rw) : ORIGIN = (1 << 30) + 2M, LENGTH = 2M
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/* Align the MTE-enabled page to the 3rd 2 MiB chunk. */
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TAG (rw) : ORIGIN = (1 << 30) + 4M, LENGTH = 2M
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}
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SECTIONS {
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.text : {
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*(.text)
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*(.rodata)
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} >TXT
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.data : {
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*(.data)
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*(.bss)
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} >DAT
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.tag : {
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/*
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* Symbol 'mte_page' is used in boot.S to setup the PTE and in the mte.S
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* test as the address that the MTE instructions operate on.
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*/
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mte_page = .;
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} >TAG
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/DISCARD/ : {
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*(.ARM.attributes)
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}
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}
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