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| author | Nagaraju Mekala <nmekala@xilinx.com> | 2020-04-04 14:40:08 +0530 |
|---|---|---|
| committer | Jeff Law <law@redhat.com> | 2020-04-05 10:13:37 -0600 |
| commit | a2ccd78027197abb787762d27b63c1a73f82c1f5 (patch) | |
| tree | a51d23da09eb1834732ef427d2fe343d97665f1e /gcc | |
| parent | 971c3d0ea28fda1e764c6f47e0d901418adddb93 (diff) | |
| download | gcc-a2ccd78027197abb787762d27b63c1a73f82c1f5.zip gcc-a2ccd78027197abb787762d27b63c1a73f82c1f5.tar.gz gcc-a2ccd78027197abb787762d27b63c1a73f82c1f5.tar.bz2 | |
Microblaze: Fixed missing save of r18 in fast_interrupt. Register 18 is used as a clobber register, and must be stored when entering a fast_interrupt. Before this fix, register 18 was only saved if it was used directly in the interrupt function.
However, if the fast_interrupt function called a function that used
r18, the register would not be saved, and thus be mangled
upon returning from the interrupt.
* config/microblaze/microblaze.c (microblaze_must_save_register): Check
for fast_interrupt.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 8 | ||||
| -rw-r--r-- | gcc/config/microblaze/microblaze.c | 2 |
2 files changed, 5 insertions, 5 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 220255a..0ce457b 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,9 +1,9 @@ 2020-04-05 Nagaraju Mekala <nmekala@xilix.com> - - * gcc/config/microblaze/microblaze.md (trap): Update output pattern. - * gcc/testsuite/gcc.target/microblaze/others/builtin-trap.c - (dg-final): update in the scan-assembler instruction + * config/microblaze/microblaze.c (microblaze_must_save_register): Check + for fast_interrupt. + + * config/microblaze/microblaze.md (trap): Update output pattern. 2020-04-04 Hannes Domani <ssbssa@yahoo.de> Jakub Jelinek <jakub@redhat.com> diff --git a/gcc/config/microblaze/microblaze.c b/gcc/config/microblaze/microblaze.c index b4754b1..a0f81b7 100644 --- a/gcc/config/microblaze/microblaze.c +++ b/gcc/config/microblaze/microblaze.c @@ -2035,7 +2035,7 @@ microblaze_must_save_register (int regno) { if (df_regs_ever_live_p (regno) || regno == MB_ABI_MSR_SAVE_REG - || (interrupt_handler + || ((interrupt_handler || fast_interrupt) && (regno == MB_ABI_ASM_TEMP_REGNUM || regno == MB_ABI_EXCEPTION_RETURN_ADDR_REGNUM))) return 1; |