diff options
Diffstat (limited to 'gcc/config/ns32k')
| -rw-r--r-- | gcc/config/ns32k/ns32k.h | 69 |
1 files changed, 52 insertions, 17 deletions
diff --git a/gcc/config/ns32k/ns32k.h b/gcc/config/ns32k/ns32k.h index b483e8b..d05690e 100644 --- a/gcc/config/ns32k/ns32k.h +++ b/gcc/config/ns32k/ns32k.h @@ -511,6 +511,11 @@ enum reg_class { NO_REGS, GENERAL_REGS, FLOAT_REGS, GEN_AND_FP_REGS, * . * * If a frame pointer is not needed we need assembler of the form + * + * # Make space on the stack + * + * adjspd <local stack space + 4> + * * # Save any general purpose registers necessary * * save [<general purpose regs to save>] @@ -529,20 +534,32 @@ enum reg_class { NO_REGS, GENERAL_REGS, FLOAT_REGS, GEN_AND_FP_REGS, for (regno = 0; regno < 8; regno++) \ if (regs_ever_live[regno] \ && ! call_used_regs[regno]) \ - { \ - *bufp++ = regno; g_regs_used++; \ - } \ + { \ + *bufp++ = regno; g_regs_used++; \ + } \ *bufp = -1; \ for (; regno < 16; regno++) \ - if (regs_ever_live[regno] && !call_used_regs[regno]) { \ - *fbufp++ = regno; \ - } \ + if (regs_ever_live[regno] && !call_used_regs[regno]) \ + { \ + *fbufp++ = regno; \ + } \ *fbufp = -1; \ bufp = used_regs_buf; \ if (frame_pointer_needed) \ fprintf (FILE, "\tenter ["); \ - else if (g_regs_used) \ - fprintf (FILE, "\tsave ["); \ + else \ + { \ + if (SIZE) \ + fprintf (FILE, "\tadjspd %d\n", SIZE + 4); \ + if (g_regs_used && g_regs_used > 4) \ + fprintf (FILE, "\tsave ["); \ + else \ + { \ + while (*bufp >= 0) \ + fprintf (FILE, "\tmovd r%d,tos\n", *bufp++); \ + g_regs_used = 0; \ + } \ + } \ while (*bufp >= 0) \ { \ fprintf (FILE, "r%d", *bufp++); \ @@ -610,7 +627,12 @@ enum reg_class { NO_REGS, GENERAL_REGS, FLOAT_REGS, GEN_AND_FP_REGS, . . . - restore [<general purpose regs to save>] */ + restore [<general purpose regs to save>] + + # reclaim space allocated on stack + + adjspd <-(local stack space + 4)> */ + #define FUNCTION_EPILOGUE(FILE, SIZE) \ { register int regno, g_regs_used = 0, f_regs_used = 0; \ @@ -619,16 +641,17 @@ enum reg_class { NO_REGS, GENERAL_REGS, FLOAT_REGS, GEN_AND_FP_REGS, extern char call_used_regs[]; \ *fbufp++ = -2; \ for (regno = 8; regno < 16; regno++) \ - if (regs_ever_live[regno] && !call_used_regs[regno]) { \ + if (regs_ever_live[regno] && !call_used_regs[regno]) \ + { \ *fbufp++ = regno; f_regs_used++; \ - } \ + } \ fbufp--; \ for (regno = 0; regno < 8; regno++) \ if (regs_ever_live[regno] \ && ! call_used_regs[regno]) \ - { \ - *bufp++ = regno; g_regs_used++; \ - } \ + { \ + *bufp++ = regno; g_regs_used++; \ + } \ while (fbufp > used_fregs_buf) \ { \ if ((*fbufp & 1) && fbufp[0] == fbufp[-1] + 1) \ @@ -640,8 +663,17 @@ enum reg_class { NO_REGS, GENERAL_REGS, FLOAT_REGS, GEN_AND_FP_REGS, } \ if (frame_pointer_needed) \ fprintf (FILE, "\texit ["); \ - else if (g_regs_used) \ - fprintf (FILE, "\trestore ["); \ + else \ + { \ + if (g_regs_used && g_regs_used > 4) \ + fprintf (FILE, "\trestore ["); \ + else \ + { \ + while (bufp > used_regs_buf) \ + fprintf (FILE, "\tmovd tos,r%d\n", *--bufp); \ + g_regs_used = 0; \ + } \ + } \ while (bufp > used_regs_buf) \ { \ fprintf (FILE, "r%d", *--bufp); \ @@ -650,6 +682,8 @@ enum reg_class { NO_REGS, GENERAL_REGS, FLOAT_REGS, GEN_AND_FP_REGS, } \ if (g_regs_used || frame_pointer_needed) \ fprintf (FILE, "]\n"); \ + if (SIZE && !frame_pointer_needed) \ + fprintf (FILE, "\tadjspd %d\n", -(SIZE + 4)); \ if (current_function_pops_args) \ fprintf (FILE, "\tret %d\n", current_function_pops_args); \ else fprintf (FILE, "\tret 0\n"); } @@ -666,7 +700,8 @@ enum reg_class { NO_REGS, GENERAL_REGS, FLOAT_REGS, GEN_AND_FP_REGS, for (regno = 0; regno < 16; regno++) \ if (regs_ever_live[regno] && ! call_used_regs[regno]) \ offset += 4; \ - (DEPTH) = offset - get_frame_size (); \ + (DEPTH) = (offset + get_frame_size () \ + + (get_frame_size () == 0 ? 0 : 4)); \ } |