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| author | Bernd Edlinger <bernd.edlinger@hotmail.de> | 2024-04-10 13:34:21 +0200 |
|---|---|---|
| committer | Bernd Edlinger <bernd.edlinger@hotmail.de> | 2024-04-15 10:22:56 +0200 |
| commit | a73073dc7f23ab37ae33402fbb38c8314bcbea3e (patch) | |
| tree | 408e9cb03a4fd3e106e149e4679bf87fc073189d /sim | |
| parent | ae14cde6fd2c527c407a115fa1684c2002749552 (diff) | |
| download | gdb-a73073dc7f23ab37ae33402fbb38c8314bcbea3e.zip gdb-a73073dc7f23ab37ae33402fbb38c8314bcbea3e.tar.gz gdb-a73073dc7f23ab37ae33402fbb38c8314bcbea3e.tar.bz2 | |
sim: riscv: Make stack 16-byte aligned
Various gcc test cases fail due to the stack
alignment of 16 bytes is expected by gcc,
causing issues mostly with vararg functions,
e.g.
FAIL: gcc.c-torture/execute/nest-align-1.c -O0 execution test
FAIL: gcc.c-torture/execute/nest-stdar-1.c -O0 execution test
FAIL: gcc.c-torture/execute/va-arg-12.c -O0 execution test
FAIL: gcc.c-torture/execute/va-arg-15.c -O0 execution test
FAIL: gcc.c-torture/execute/va-arg-16.c -O0 execution test
FAIL: gcc.c-torture/execute/va-arg-17.c -O0 execution test
FAIL: gcc.c-torture/execute/va-arg-20.c -O0 execution test
FAIL: gcc.c-torture/execute/va-arg-26.c -O0 execution test
...
Approved-By: Andrew Burgess <aburgess@redhat.com>
Diffstat (limited to 'sim')
| -rw-r--r-- | sim/riscv/sim-main.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sim/riscv/sim-main.c b/sim/riscv/sim-main.c index ddc7e1d..1ccae45 100644 --- a/sim/riscv/sim-main.c +++ b/sim/riscv/sim-main.c @@ -1575,6 +1575,8 @@ initialize_env (SIM_DESC sd, const char * const *argv, const char * const *env) sp = sp_flat - ((argc + 1 + envc + 1) * sizeof (address_word)); /* Then the argc. */ sp -= sizeof (unsigned_word); + /* Align to 16 bytes. */ + sp = align_down (sp, 16); /* Set up the regs the libgloss crt0 expects. */ riscv_cpu->a0 = argc; |