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author | Przemyslaw Wirkus <przemyslaw.wirkus@arm.com> | 2020-10-22 15:17:10 +0100 |
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committer | Przemyslaw Wirkus <przemyslaw.wirkus@arm.com> | 2020-10-22 15:17:10 +0100 |
commit | 5feaa09beca04312e51adc69766b0e4bfc181f99 (patch) | |
tree | 3243079e3740ffe96513174725e13002a30ab7d8 /gas | |
parent | bec0b9f6f2e74c799e382bcf5154ecab6bd77c74 (diff) | |
download | gdb-5feaa09beca04312e51adc69766b0e4bfc181f99.zip gdb-5feaa09beca04312e51adc69766b0e4bfc181f99.tar.gz gdb-5feaa09beca04312e51adc69766b0e4bfc181f99.tar.bz2 |
aarch64: Define CSRE system registers
This patch introduces CSRE (Call Stack Recorder Extension) system
registers.
Note: as this is register only extension we do not want to hide these
registers behind -march flag going forward (they should be enabled by
default).
CSRE feature adds CSR PDEC (Decrements Call stack pointer by the size
of a Call stack record) instruction. This instruction will be added in
a following, separate patch. This change only adds CSRE system
registers.
gas/ChangeLog:
2020-10-08 Przemyslaw Wirkus <przemyslaw.wirkus@arm.com>
* NEWS: Docs update.
* testsuite/gas/aarch64/csre-invalid.d: New test.
* testsuite/gas/aarch64/csre-invalid.l: New test.
* testsuite/gas/aarch64/csre-invalid.s: New test.
* testsuite/gas/aarch64/csre.d: New test.
* testsuite/gas/aarch64/csre.s: New test.
opcodes/ChangeLog:
2020-10-08 Przemyslaw Wirkus <przemyslaw.wirkus@arm.com>
* aarch64-opc.c: New CSRE system registers defined.
Diffstat (limited to 'gas')
-rw-r--r-- | gas/NEWS | 3 | ||||
-rw-r--r-- | gas/testsuite/gas/aarch64/csre-invalid.d | 3 | ||||
-rw-r--r-- | gas/testsuite/gas/aarch64/csre-invalid.l | 5 | ||||
-rw-r--r-- | gas/testsuite/gas/aarch64/csre-invalid.s | 6 | ||||
-rw-r--r-- | gas/testsuite/gas/aarch64/csre.d | 29 | ||||
-rw-r--r-- | gas/testsuite/gas/aarch64/csre.s | 25 |
6 files changed, 70 insertions, 1 deletions
@@ -15,7 +15,8 @@ Add support for Cortex-R82, Neoverse V1, and Neoverse N2 for ARM. * Add support for ETMv4 (Embedded Trace Macrocell), ETE (Embedded Trace - Extension) and TRBE (Trace Buffer Extension) system registers for AArch64. + Extension), TRBE (Trace Buffer Extension) and CSRE (Call Stack Recorder + Extension) system registers for AArch64. * Add support for Armv8-R AArch64. diff --git a/gas/testsuite/gas/aarch64/csre-invalid.d b/gas/testsuite/gas/aarch64/csre-invalid.d new file mode 100644 index 0000000..f273b65 --- /dev/null +++ b/gas/testsuite/gas/aarch64/csre-invalid.d @@ -0,0 +1,3 @@ +#name: Invalid CSRE System registers usage +#source: csre-invalid.s +#warning_output: csre-invalid.l diff --git a/gas/testsuite/gas/aarch64/csre-invalid.l b/gas/testsuite/gas/aarch64/csre-invalid.l new file mode 100644 index 0000000..be3d4c4 --- /dev/null +++ b/gas/testsuite/gas/aarch64/csre-invalid.l @@ -0,0 +1,5 @@ +.*: Assembler messages: +.*: Warning: specified register cannot be written to at operand 1 -- `msr csridr_el0,x0' +.*: Warning: specified register cannot be written to at operand 1 -- `msr csrptridx_el0,x0' +.*: Warning: specified register cannot be written to at operand 1 -- `msr csrptridx_el1,x0' +.*: Warning: specified register cannot be written to at operand 1 -- `msr csrptridx_el2,x0' diff --git a/gas/testsuite/gas/aarch64/csre-invalid.s b/gas/testsuite/gas/aarch64/csre-invalid.s new file mode 100644 index 0000000..424f50a --- /dev/null +++ b/gas/testsuite/gas/aarch64/csre-invalid.s @@ -0,0 +1,6 @@ +/* Write to read-only CSRE system registers. */ + +msr csridr_el0 ,x0 +msr csrptridx_el0 ,x0 +msr csrptridx_el1 ,x0 +msr csrptridx_el2 ,x0 diff --git a/gas/testsuite/gas/aarch64/csre.d b/gas/testsuite/gas/aarch64/csre.d new file mode 100644 index 0000000..ac77d4a --- /dev/null +++ b/gas/testsuite/gas/aarch64/csre.d @@ -0,0 +1,29 @@ +#name: CSRE System registers +#objdump: -dr + +.*: file format .* + + +Disassembly of section \.text: + +0+ <.*>: +[^:]+: d5338000 mrs x0, csrcr_el0 +[^:]+: d5338020 mrs x0, csrptr_el0 +[^:]+: d5338040 mrs x0, csridr_el0 +[^:]+: d5338060 mrs x0, csrptridx_el0 +[^:]+: d5308000 mrs x0, csrcr_el1 +[^:]+: d5358000 mrs x0, csrcr_el12 +[^:]+: d5308020 mrs x0, csrptr_el1 +[^:]+: d5358020 mrs x0, csrptr_el12 +[^:]+: d5308060 mrs x0, csrptridx_el1 +[^:]+: d5348000 mrs x0, csrcr_el2 +[^:]+: d5348020 mrs x0, csrptr_el2 +[^:]+: d5348060 mrs x0, csrptridx_el2 +[^:]+: d5138000 msr csrcr_el0, x0 +[^:]+: d5138020 msr csrptr_el0, x0 +[^:]+: d5108000 msr csrcr_el1, x0 +[^:]+: d5158000 msr csrcr_el12, x0 +[^:]+: d5108020 msr csrptr_el1, x0 +[^:]+: d5158020 msr csrptr_el12, x0 +[^:]+: d5148000 msr csrcr_el2, x0 +[^:]+: d5148020 msr csrptr_el2, x0 diff --git a/gas/testsuite/gas/aarch64/csre.s b/gas/testsuite/gas/aarch64/csre.s new file mode 100644 index 0000000..bede41c --- /dev/null +++ b/gas/testsuite/gas/aarch64/csre.s @@ -0,0 +1,25 @@ +/* Call Stack Recorder Extension system registers. */ + +/* Read from system registers. */ +mrs x0, csrcr_el0 +mrs x0, csrptr_el0 +mrs x0, csridr_el0 +mrs x0, csrptridx_el0 +mrs x0, csrcr_el1 +mrs x0, csrcr_el12 +mrs x0, csrptr_el1 +mrs x0, csrptr_el12 +mrs x0, csrptridx_el1 +mrs x0, csrcr_el2 +mrs x0, csrptr_el2 +mrs x0, csrptridx_el2 + +/* Write to system registers. */ +msr csrcr_el0, x0 +msr csrptr_el0, x0 +msr csrcr_el1, x0 +msr csrcr_el12, x0 +msr csrptr_el1, x0 +msr csrptr_el12, x0 +msr csrcr_el2, x0 +msr csrptr_el2, x0 |