| Message ID | 20230328212516.29592-1-philmd@linaro.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [PATCH-for-8.0,v3] target/arm: Fix non-TCG build failure by inlining pauth_ptr_mask() | expand |
On Tue, 28 Mar 2023 at 22:25, Philippe Mathieu-Daudé <philmd@linaro.org> wrote: > > aarch64_gdb_get_pauth_reg() -- although disabled since commit > 5787d17a42 ("target/arm: Don't advertise aarch64-pauth.xml to > gdb") is still compiled in. It calls pauth_ptr_mask() which is > located in target/arm/tcg/pauth_helper.c, a TCG specific helper. > > To avoid a linking error when TCG is not enabled: > > Undefined symbols for architecture arm64: > "_pauth_ptr_mask", referenced from: > _aarch64_gdb_get_pauth_reg in target_arm_gdbstub64.c.o > ld: symbol(s) not found for architecture arm64 > clang: error: linker command failed with exit code 1 (use -v to see invocation) > > - Inline pauth_ptr_mask() in aarch64_gdb_get_pauth_reg() > (this is the single user), > - Rename pauth_ptr_mask_internal() as pauth_ptr_mask() and > inline it in "internals.h", > > Fixes: e995d5cce4 ("target/arm: Implement gdbstub pauth extension") > Suggested-by: Richard Henderson <richard.henderson@linaro.org> > Reviewed-by: Fabiano Rosas <farosas@suse.de> > Reviewed-by: Richard Henderson <richard.henderson@linaro.org> > Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> > --- > Supersedes: <20230328133054.6553-1-philmd@linaro.org> > > Since v2: > - Rebased (patch #1 merged) > - Addressed rth's comments > - Added R-b tags > --- > target/arm/internals.h | 16 +++++++--------- > target/arm/gdbstub64.c | 7 +++++-- > target/arm/tcg/pauth_helper.c | 18 +----------------- > 3 files changed, 13 insertions(+), 28 deletions(-) > > diff --git a/target/arm/internals.h b/target/arm/internals.h > index 673519a24a..71f4c6d8a2 100644 > --- a/target/arm/internals.h > +++ b/target/arm/internals.h > @@ -1389,15 +1389,13 @@ int exception_target_el(CPUARMState *env); > bool arm_singlestep_active(CPUARMState *env); > bool arm_generate_debug_exceptions(CPUARMState *env); > > -/** > - * pauth_ptr_mask: > - * @env: cpu context > - * @ptr: selects between TTBR0 and TTBR1 > - * @data: selects between TBI and TBID > - * > - * Return a mask of the bits of @ptr that contain the authentication code. > - */ > -uint64_t pauth_ptr_mask(CPUARMState *env, uint64_t ptr, bool data); > +static inline uint64_t pauth_ptr_mask(ARMVAParameters param) > +{ > + int bot_pac_bit = 64 - param.tsz; > + int top_pac_bit = 64 - 8 * param.tbi; > + > + return MAKE_64BIT_MASK(bot_pac_bit, top_pac_bit - bot_pac_bit); > +} Any reason for deleting the doc comment ? thanks -- PMM
On Thu, 30 Mar 2023 at 11:31, Peter Maydell <peter.maydell@linaro.org> wrote: > > On Tue, 28 Mar 2023 at 22:25, Philippe Mathieu-Daudé <philmd@linaro.org> wrote: > > > > aarch64_gdb_get_pauth_reg() -- although disabled since commit > > 5787d17a42 ("target/arm: Don't advertise aarch64-pauth.xml to > > gdb") is still compiled in. It calls pauth_ptr_mask() which is > > located in target/arm/tcg/pauth_helper.c, a TCG specific helper. > > > > To avoid a linking error when TCG is not enabled: > > > > Undefined symbols for architecture arm64: > > "_pauth_ptr_mask", referenced from: > > _aarch64_gdb_get_pauth_reg in target_arm_gdbstub64.c.o > > ld: symbol(s) not found for architecture arm64 > > clang: error: linker command failed with exit code 1 (use -v to see invocation) > > > > - Inline pauth_ptr_mask() in aarch64_gdb_get_pauth_reg() > > (this is the single user), > > - Rename pauth_ptr_mask_internal() as pauth_ptr_mask() and > > inline it in "internals.h", > > > > Fixes: e995d5cce4 ("target/arm: Implement gdbstub pauth extension") > > Suggested-by: Richard Henderson <richard.henderson@linaro.org> > > Reviewed-by: Fabiano Rosas <farosas@suse.de> > > Reviewed-by: Richard Henderson <richard.henderson@linaro.org> > > Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> > > --- > > Supersedes: <20230328133054.6553-1-philmd@linaro.org> > > > > Since v2: > > - Rebased (patch #1 merged) > > - Addressed rth's comments > > - Added R-b tags > > --- > > target/arm/internals.h | 16 +++++++--------- > > target/arm/gdbstub64.c | 7 +++++-- > > target/arm/tcg/pauth_helper.c | 18 +----------------- > > 3 files changed, 13 insertions(+), 28 deletions(-) > > > > diff --git a/target/arm/internals.h b/target/arm/internals.h > > index 673519a24a..71f4c6d8a2 100644 > > --- a/target/arm/internals.h > > +++ b/target/arm/internals.h > > @@ -1389,15 +1389,13 @@ int exception_target_el(CPUARMState *env); > > bool arm_singlestep_active(CPUARMState *env); > > bool arm_generate_debug_exceptions(CPUARMState *env); > > > > -/** > > - * pauth_ptr_mask: > > - * @env: cpu context > > - * @ptr: selects between TTBR0 and TTBR1 > > - * @data: selects between TBI and TBID > > - * > > - * Return a mask of the bits of @ptr that contain the authentication code. > > - */ > > -uint64_t pauth_ptr_mask(CPUARMState *env, uint64_t ptr, bool data); > > +static inline uint64_t pauth_ptr_mask(ARMVAParameters param) > > +{ > > + int bot_pac_bit = 64 - param.tsz; > > + int top_pac_bit = 64 - 8 * param.tbi; > > + > > + return MAKE_64BIT_MASK(bot_pac_bit, top_pac_bit - bot_pac_bit); > > +} > > Any reason for deleting the doc comment ? Applied to target-arm.next with a doc comment: /** * pauth_ptr_mask: * @param: parameters defining the MMU setup * * Return a mask of the address bits that contain the authentication code, * given the MMU config defined by @param. */ -- PMM
On 30/3/23 12:34, Peter Maydell wrote: > On Thu, 30 Mar 2023 at 11:31, Peter Maydell <peter.maydell@linaro.org> wrote: >> >> On Tue, 28 Mar 2023 at 22:25, Philippe Mathieu-Daudé <philmd@linaro.org> wrote: >>> >>> aarch64_gdb_get_pauth_reg() -- although disabled since commit >>> 5787d17a42 ("target/arm: Don't advertise aarch64-pauth.xml to >>> gdb") is still compiled in. It calls pauth_ptr_mask() which is >>> located in target/arm/tcg/pauth_helper.c, a TCG specific helper. >>> >>> To avoid a linking error when TCG is not enabled: >>> >>> Undefined symbols for architecture arm64: >>> "_pauth_ptr_mask", referenced from: >>> _aarch64_gdb_get_pauth_reg in target_arm_gdbstub64.c.o >>> ld: symbol(s) not found for architecture arm64 >>> clang: error: linker command failed with exit code 1 (use -v to see invocation) >>> >>> - Inline pauth_ptr_mask() in aarch64_gdb_get_pauth_reg() >>> (this is the single user), >>> - Rename pauth_ptr_mask_internal() as pauth_ptr_mask() and >>> inline it in "internals.h", >>> >>> Fixes: e995d5cce4 ("target/arm: Implement gdbstub pauth extension") >>> Suggested-by: Richard Henderson <richard.henderson@linaro.org> >>> Reviewed-by: Fabiano Rosas <farosas@suse.de> >>> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> >>> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> >>> --- >>> Supersedes: <20230328133054.6553-1-philmd@linaro.org> >>> >>> Since v2: >>> - Rebased (patch #1 merged) >>> - Addressed rth's comments >>> - Added R-b tags >>> --- >>> target/arm/internals.h | 16 +++++++--------- >>> target/arm/gdbstub64.c | 7 +++++-- >>> target/arm/tcg/pauth_helper.c | 18 +----------------- >>> 3 files changed, 13 insertions(+), 28 deletions(-) >>> >>> diff --git a/target/arm/internals.h b/target/arm/internals.h >>> index 673519a24a..71f4c6d8a2 100644 >>> --- a/target/arm/internals.h >>> +++ b/target/arm/internals.h >>> @@ -1389,15 +1389,13 @@ int exception_target_el(CPUARMState *env); >>> bool arm_singlestep_active(CPUARMState *env); >>> bool arm_generate_debug_exceptions(CPUARMState *env); >>> >>> -/** >>> - * pauth_ptr_mask: >>> - * @env: cpu context >>> - * @ptr: selects between TTBR0 and TTBR1 >>> - * @data: selects between TBI and TBID >>> - * >>> - * Return a mask of the bits of @ptr that contain the authentication code. >>> - */ >>> -uint64_t pauth_ptr_mask(CPUARMState *env, uint64_t ptr, bool data); >>> +static inline uint64_t pauth_ptr_mask(ARMVAParameters param) >>> +{ >>> + int bot_pac_bit = 64 - param.tsz; >>> + int top_pac_bit = 64 - 8 * param.tbi; >>> + >>> + return MAKE_64BIT_MASK(bot_pac_bit, top_pac_bit - bot_pac_bit); >>> +} >> >> Any reason for deleting the doc comment ? > > Applied to target-arm.next with a doc comment: > > /** > * pauth_ptr_mask: > * @param: parameters defining the MMU setup > * > * Return a mask of the address bits that contain the authentication code, > * given the MMU config defined by @param. > */ Thank you!
diff --git a/target/arm/internals.h b/target/arm/internals.h index 673519a24a..71f4c6d8a2 100644 --- a/target/arm/internals.h +++ b/target/arm/internals.h @@ -1389,15 +1389,13 @@ int exception_target_el(CPUARMState *env); bool arm_singlestep_active(CPUARMState *env); bool arm_generate_debug_exceptions(CPUARMState *env); -/** - * pauth_ptr_mask: - * @env: cpu context - * @ptr: selects between TTBR0 and TTBR1 - * @data: selects between TBI and TBID - * - * Return a mask of the bits of @ptr that contain the authentication code. - */ -uint64_t pauth_ptr_mask(CPUARMState *env, uint64_t ptr, bool data); +static inline uint64_t pauth_ptr_mask(ARMVAParameters param) +{ + int bot_pac_bit = 64 - param.tsz; + int top_pac_bit = 64 - 8 * param.tbi; + + return MAKE_64BIT_MASK(bot_pac_bit, top_pac_bit - bot_pac_bit); +} /* Add the cpreg definitions for debug related system registers */ void define_debug_regs(ARMCPU *cpu); diff --git a/target/arm/gdbstub64.c b/target/arm/gdbstub64.c index ec1e07f139..c1f7e8c934 100644 --- a/target/arm/gdbstub64.c +++ b/target/arm/gdbstub64.c @@ -230,8 +230,11 @@ int aarch64_gdb_get_pauth_reg(CPUARMState *env, GByteArray *buf, int reg) { bool is_data = !(reg & 1); bool is_high = reg & 2; - uint64_t mask = pauth_ptr_mask(env, -is_high, is_data); - return gdb_get_reg64(buf, mask); + ARMMMUIdx mmu_idx = arm_stage1_mmu_idx(env); + ARMVAParameters param; + + param = aa64_va_parameters(env, -is_high, mmu_idx, is_data); + return gdb_get_reg64(buf, pauth_ptr_mask(param)); } default: return 0; diff --git a/target/arm/tcg/pauth_helper.c b/target/arm/tcg/pauth_helper.c index 20f347332d..de067fa716 100644 --- a/target/arm/tcg/pauth_helper.c +++ b/target/arm/tcg/pauth_helper.c @@ -339,17 +339,9 @@ static uint64_t pauth_addpac(CPUARMState *env, uint64_t ptr, uint64_t modifier, return pac | ext | ptr; } -static uint64_t pauth_ptr_mask_internal(ARMVAParameters param) -{ - int bot_pac_bit = 64 - param.tsz; - int top_pac_bit = 64 - 8 * param.tbi; - - return MAKE_64BIT_MASK(bot_pac_bit, top_pac_bit - bot_pac_bit); -} - static uint64_t pauth_original_ptr(uint64_t ptr, ARMVAParameters param) { - uint64_t mask = pauth_ptr_mask_internal(param); + uint64_t mask = pauth_ptr_mask(param); /* Note that bit 55 is used whether or not the regime has 2 ranges. */ if (extract64(ptr, 55, 1)) { @@ -359,14 +351,6 @@ static uint64_t pauth_original_ptr(uint64_t ptr, ARMVAParameters param) } } -uint64_t pauth_ptr_mask(CPUARMState *env, uint64_t ptr, bool data) -{ - ARMMMUIdx mmu_idx = arm_stage1_mmu_idx(env); - ARMVAParameters param = aa64_va_parameters(env, ptr, mmu_idx, data); - - return pauth_ptr_mask_internal(param); -} - static uint64_t pauth_auth(CPUARMState *env, uint64_t ptr, uint64_t modifier, ARMPACKey *key, bool data, int keynumber) {
aarch64_gdb_get_pauth_reg() -- although disabled since commit 5787d17a42 ("target/arm: Don't advertise aarch64-pauth.xml to gdb") is still compiled in. It calls pauth_ptr_mask() which is located in target/arm/tcg/pauth_helper.c, a TCG specific helper. To avoid a linking error when TCG is not enabled: Undefined symbols for architecture arm64: "_pauth_ptr_mask", referenced from: _aarch64_gdb_get_pauth_reg in target_arm_gdbstub64.c.o ld: symbol(s) not found for architecture arm64 clang: error: linker command failed with exit code 1 (use -v to see invocation) - Inline pauth_ptr_mask() in aarch64_gdb_get_pauth_reg() (this is the single user), - Rename pauth_ptr_mask_internal() as pauth_ptr_mask() and inline it in "internals.h", Fixes: e995d5cce4 ("target/arm: Implement gdbstub pauth extension") Suggested-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Fabiano Rosas <farosas@suse.de> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> --- Supersedes: <20230328133054.6553-1-philmd@linaro.org> Since v2: - Rebased (patch #1 merged) - Addressed rth's comments - Added R-b tags --- target/arm/internals.h | 16 +++++++--------- target/arm/gdbstub64.c | 7 +++++-- target/arm/tcg/pauth_helper.c | 18 +----------------- 3 files changed, 13 insertions(+), 28 deletions(-)