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| author | Richard Sandiford <richard.sandiford@arm.com> | 2021-11-30 17:50:24 +0000 |
|---|---|---|
| committer | Richard Sandiford <richard.sandiford@arm.com> | 2021-11-30 17:50:24 +0000 |
| commit | 1864b6578bd96bee057ed4ce5f69917c9ad9abc9 (patch) | |
| tree | 6dc19b9e2e0f6f5b33c26f5d65f36f86730e958c | |
| parent | 31a8056f2f519fda71682cffd0eac6ba87a59c8e (diff) | |
| download | gdb-1864b6578bd96bee057ed4ce5f69917c9ad9abc9.zip gdb-1864b6578bd96bee057ed4ce5f69917c9ad9abc9.tar.gz gdb-1864b6578bd96bee057ed4ce5f69917c9ad9abc9.tar.bz2 | |
aarch64: Mark PMSIDR_EL1 as read-only
We were incorrectly allowing writes to PMSIDR_EL1, which is
a read-only register.
[https://developer.arm.com/documentation/ddi0595/2021-09/AArch64-Registers/PMSIDR-EL1--Sampling-Profiling-ID-Register?lang=en]
opcodes/
* aarch64-opc.c (aarch64_sys_regs): Make pmsidr_el1 as F_REG_READ.
gas/
* testsuite/gas/aarch64/msr.s: Remove write to pmsidr_el1.
* testsuite/gas/aarch64/msr.d: Update accordingly.
* testsuite/gas/aarch64/illegal-sysreg-2.s,
* testsuite/gas/aarch64/illegal-sysreg-2.d,
* testsuite/gas/aarch64/illegal-sysreg-2.l: New test.
| -rw-r--r-- | gas/testsuite/gas/aarch64/illegal-sysreg-2.d | 2 | ||||
| -rw-r--r-- | gas/testsuite/gas/aarch64/illegal-sysreg-2.l | 2 | ||||
| -rw-r--r-- | gas/testsuite/gas/aarch64/illegal-sysreg-2.s | 3 | ||||
| -rw-r--r-- | gas/testsuite/gas/aarch64/msr.d | 3 | ||||
| -rw-r--r-- | gas/testsuite/gas/aarch64/msr.s | 1 | ||||
| -rw-r--r-- | opcodes/aarch64-opc.c | 2 |
6 files changed, 9 insertions, 4 deletions
diff --git a/gas/testsuite/gas/aarch64/illegal-sysreg-2.d b/gas/testsuite/gas/aarch64/illegal-sysreg-2.d new file mode 100644 index 0000000..bff7ea7 --- /dev/null +++ b/gas/testsuite/gas/aarch64/illegal-sysreg-2.d @@ -0,0 +1,2 @@ +#source: illegal-sysreg-2.s +#warning_output: illegal-sysreg-2.l diff --git a/gas/testsuite/gas/aarch64/illegal-sysreg-2.l b/gas/testsuite/gas/aarch64/illegal-sysreg-2.l new file mode 100644 index 0000000..60aa5c2 --- /dev/null +++ b/gas/testsuite/gas/aarch64/illegal-sysreg-2.l @@ -0,0 +1,2 @@ +.*: Assembler messages: +.*: Warning: specified register cannot be written to at operand 1 -- `msr pmsidr_el1,x0' diff --git a/gas/testsuite/gas/aarch64/illegal-sysreg-2.s b/gas/testsuite/gas/aarch64/illegal-sysreg-2.s new file mode 100644 index 0000000..f95584c --- /dev/null +++ b/gas/testsuite/gas/aarch64/illegal-sysreg-2.s @@ -0,0 +1,3 @@ +/* Write to R/O system registers. */ +.arch armv8.2-a+profile +msr pmsidr_el1, x0 diff --git a/gas/testsuite/gas/aarch64/msr.d b/gas/testsuite/gas/aarch64/msr.d index 4d5e630..fedf2ee 100644 --- a/gas/testsuite/gas/aarch64/msr.d +++ b/gas/testsuite/gas/aarch64/msr.d @@ -24,5 +24,4 @@ Disassembly of section \.text: 3c: d5300040 mrs x0, osdtrrx_el1 40: d5100340 msr osdtrtx_el1, x0 44: d5300340 mrs x0, osdtrtx_el1 - 48: d51899e0 msr pmsidr_el1, x0 - 4c: d53899e0 mrs x0, pmsidr_el1 + 48: d53899e0 mrs x0, pmsidr_el1 diff --git a/gas/testsuite/gas/aarch64/msr.s b/gas/testsuite/gas/aarch64/msr.s index 5e8ae85..36ebfe4 100644 --- a/gas/testsuite/gas/aarch64/msr.s +++ b/gas/testsuite/gas/aarch64/msr.s @@ -47,5 +47,4 @@ func: msr osdtrtx_el1, x0 mrs x0, osdtrtx_el1 - msr pmsidr_el1, x0 mrs x0, pmsidr_el1 diff --git a/opcodes/aarch64-opc.c b/opcodes/aarch64-opc.c index 714c705..372101a 100644 --- a/opcodes/aarch64-opc.c +++ b/opcodes/aarch64-opc.c @@ -4346,7 +4346,7 @@ const aarch64_sys_reg aarch64_sys_regs [] = SR_PROFILE ("pmsfcr_el1", CPENC (3,0,C9,C9,4), 0), SR_PROFILE ("pmsevfr_el1", CPENC (3,0,C9,C9,5), 0), SR_PROFILE ("pmslatfr_el1", CPENC (3,0,C9,C9,6), 0), - SR_PROFILE ("pmsidr_el1", CPENC (3,0,C9,C9,7), 0), + SR_PROFILE ("pmsidr_el1", CPENC (3,0,C9,C9,7), F_REG_READ), SR_PROFILE ("pmscr_el2", CPENC (3,4,C9,C9,0), 0), SR_PROFILE ("pmscr_el12", CPENC (3,5,C9,C9,0), 0), SR_CORE ("pmcr_el0", CPENC (3,3,C9,C12,0), 0), |