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| author | Michael Meissner <meissner@gcc.gnu.org> | 1992-12-06 12:55:14 +0000 |
|---|---|---|
| committer | Michael Meissner <meissner@gcc.gnu.org> | 1992-12-06 12:55:14 +0000 |
| commit | 5251caf233025a931b174c6b4f173f4e23b87167 (patch) | |
| tree | f356f471b6cb586b2a91c9ebde7da93f311a42c8 | |
| parent | 2649b2ee2e6ea57aab3098201a3d607d2314746e (diff) | |
| download | gcc-5251caf233025a931b174c6b4f173f4e23b87167.zip gcc-5251caf233025a931b174c6b4f173f4e23b87167.tar.gz gcc-5251caf233025a931b174c6b4f173f4e23b87167.tar.bz2 | |
Fix bug when large stack frames (> 32k) are used, and saving both GP and FP registers.
From-SVN: r2840
| -rw-r--r-- | gcc/config/mips/mips.c | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/gcc/config/mips/mips.c b/gcc/config/mips/mips.c index 912a8eb..018e9ab 100644 --- a/gcc/config/mips/mips.c +++ b/gcc/config/mips/mips.c @@ -3914,7 +3914,7 @@ save_restore (file, gp_op, gp_2word_op, fp_op) unsigned long fmask = current_frame_info.fmask; unsigned long gp_offset; unsigned long fp_offset; - unsigned long max_offset; + unsigned long min_offset; char *base_reg; if (mask == 0 && fmask == 0) @@ -3923,17 +3923,17 @@ save_restore (file, gp_op, gp_2word_op, fp_op) base_reg = reg_names[STACK_POINTER_REGNUM]; gp_offset = current_frame_info.gp_sp_offset; fp_offset = current_frame_info.fp_sp_offset; - max_offset = (gp_offset > fp_offset) ? gp_offset : fp_offset; + min_offset = (gp_offset < fp_offset && mask != 0) ? gp_offset : fp_offset; /* Deal with calling functions with a large structure. */ - if (max_offset >= 32768) + if (min_offset >= 32768) { char *temp = reg_names[MIPS_TEMP2_REGNUM]; - fprintf (file, "\tli\t%s,%ld\n", temp, max_offset); + fprintf (file, "\tli\t%s,%ld\n", temp, min_offset); fprintf (file, "\taddu\t%s,%s,%s\n", temp, temp, base_reg); base_reg = temp; - gp_offset = max_offset - gp_offset; - fp_offset = max_offset - fp_offset; + gp_offset = min_offset - gp_offset; + fp_offset = min_offset - fp_offset; } /* Save registers starting from high to low. The debuggers prefer @@ -3982,28 +3982,28 @@ save_restore_insns (store_p) int store_p; /* true if this is prologue */ { int regno; - rtx base_reg_rtx = stack_pointer_rtx; - unsigned long mask = current_frame_info.mask; - unsigned long fmask = current_frame_info.fmask; + rtx base_reg_rtx = stack_pointer_rtx; + unsigned long mask = current_frame_info.mask; + unsigned long fmask = current_frame_info.fmask; unsigned long gp_offset; unsigned long fp_offset; - unsigned long max_offset; + unsigned long min_offset; if (mask == 0 && fmask == 0) return; gp_offset = current_frame_info.gp_sp_offset; fp_offset = current_frame_info.fp_sp_offset; - max_offset = (gp_offset > fp_offset) ? gp_offset : fp_offset; + min_offset = (gp_offset < fp_offset && mask != 0) ? gp_offset : fp_offset; /* Deal with calling functions with a large structure. */ - if (max_offset >= 32768) + if (min_offset >= 32768) { base_reg_rtx = gen_rtx (REG, Pmode, MIPS_TEMP2_REGNUM); - emit_move_insn (base_reg_rtx, GEN_INT (max_offset)); + emit_move_insn (base_reg_rtx, GEN_INT (min_offset)); emit_insn (gen_addsi3 (base_reg_rtx, base_reg_rtx, stack_pointer_rtx)); - gp_offset = max_offset - gp_offset; - fp_offset = max_offset - fp_offset; + gp_offset = min_offset - gp_offset; + fp_offset = min_offset - fp_offset; } /* Save registers starting from high to low. The debuggers prefer |