diff options
| author | Chung-Ju Wu <jasonwucj@gmail.com> | 2014-09-03 09:37:36 +0000 |
|---|---|---|
| committer | Chung-Ju Wu <jasonwucj@gcc.gnu.org> | 2014-09-03 09:37:36 +0000 |
| commit | 35da54a6086474e5c37826fb63aeaf70bc794181 (patch) | |
| tree | 1b0529ab62449376c46c245d1fe0643c9feba0cb /gcc | |
| parent | d4a6a4d9a0a2f8e25a7799ca4054bdf3aba374b3 (diff) | |
| download | gcc-35da54a6086474e5c37826fb63aeaf70bc794181.zip gcc-35da54a6086474e5c37826fb63aeaf70bc794181.tar.gz gcc-35da54a6086474e5c37826fb63aeaf70bc794181.tar.bz2 | |
[NDS32] Prepare necessary varargs information in compute_stack_frame().
* config/nds32/nds32.c (nds32_compute_stack_frame): Prepare necessary
varargs information.
From-SVN: r214862
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/nds32/nds32.c | 40 |
2 files changed, 31 insertions, 14 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index c8ac8b5..31baaad 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,10 @@ 2014-09-03 Chung-Ju Wu <jasonwucj@gmail.com> + * config/nds32/nds32.c (nds32_compute_stack_frame): Prepare necessary + varargs information. + +2014-09-03 Chung-Ju Wu <jasonwucj@gmail.com> + * config/nds32/nds32.c (nds32_setup_incoming_varargs): New implementation for TARGET_SETUP_INCOMING_VARARGS. (nds32_strict_argument_naming): Refine comment. diff --git a/gcc/config/nds32/nds32.c b/gcc/config/nds32/nds32.c index a94d576..5fbdac8 100644 --- a/gcc/config/nds32/nds32.c +++ b/gcc/config/nds32/nds32.c @@ -150,16 +150,30 @@ nds32_compute_stack_frame (void) cfun->machine->naked_p = 0; /* Get variadic arguments size to prepare pretend arguments and - push them into stack at prologue. - Currently, we do not push variadic arguments by ourself. - We have GCC handle all the works. - The caller will push all corresponding nameless arguments into stack, - and the callee is able to retrieve them without problems. - These variables are still preserved in case one day - we would like caller passing arguments with registers. */ - cfun->machine->va_args_size = 0; - cfun->machine->va_args_first_regno = SP_REGNUM; - cfun->machine->va_args_last_regno = SP_REGNUM; + we will push them into stack at prologue by ourself. */ + cfun->machine->va_args_size = crtl->args.pretend_args_size; + if (cfun->machine->va_args_size != 0) + { + cfun->machine->va_args_first_regno + = NDS32_GPR_ARG_FIRST_REGNUM + + NDS32_MAX_GPR_REGS_FOR_ARGS + - (crtl->args.pretend_args_size / UNITS_PER_WORD); + cfun->machine->va_args_last_regno + = NDS32_GPR_ARG_FIRST_REGNUM + NDS32_MAX_GPR_REGS_FOR_ARGS - 1; + } + else + { + cfun->machine->va_args_first_regno = SP_REGNUM; + cfun->machine->va_args_last_regno = SP_REGNUM; + } + + /* Important: We need to make sure that varargs area is 8-byte alignment. */ + block_size = cfun->machine->va_args_size; + if (!NDS32_DOUBLE_WORD_ALIGN_P (block_size)) + { + cfun->machine->va_args_area_padding_bytes + = NDS32_ROUND_UP_DOUBLE_WORD (block_size) - block_size; + } /* Get local variables, incoming variables, and temporary variables size. Note that we need to make sure it is 8-byte alignment because @@ -323,12 +337,10 @@ nds32_compute_stack_frame (void) } /* Important: We need to make sure that - (va_args_size + fp_size + gp_size - + lp_size + callee_saved_regs_size) + (fp_size + gp_size + lp_size + callee_saved_regs_size) is 8-byte alignment. If it is not, calculate the padding bytes. */ - block_size = cfun->machine->va_args_size - + cfun->machine->fp_size + block_size = cfun->machine->fp_size + cfun->machine->gp_size + cfun->machine->lp_size + cfun->machine->callee_saved_regs_size; |