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Merge pull request #168 from davidgiven/dtrg-i167

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i80: fix large stack frames
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David Given 2019-02-15 23:12:12 +01:00 • committed by GitHub
commit d4d5eee1cd
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2 changed files with 10 additions and 7 deletions
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14
mach/i80/ncg/mach.c
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@ -49,16 +49,18 @@ void con_mult(sz) word sz;
void prolog(full nlocals) void prolog(full nlocals)
{ {
if (nlocals == 0) int16_t adjustment = -nlocals;
if (adjustment == 0)
fprintf(codefile, "\tcall .pro0\n"); fprintf(codefile, "\tcall .pro0\n");
else if (nlocals == 2) else if (adjustment == -2)
fprintf(codefile, "\tcall .pro2\n"); fprintf(codefile, "\tcall .pro2\n");
else if (nlocals == 4) else if (adjustment == -4)
fprintf(codefile, "\tcall .pro4\n"); fprintf(codefile, "\tcall .pro4\n");
else if (nlocals < 0x100) else if ((adjustment >= -128) && (adjustment <= 127))
fprintf(codefile, "\tcall .probyte\n\t.data1 %d\n", -nlocals); fprintf(codefile, "\tcall .probyte\n\t.data1 %d\n", adjustment);
else else
fprintf(codefile, "\tcall .proword\n\t.data2 %d\n", -nlocals); fprintf(codefile, "\tcall .proword\n\t.data2 %d\n", adjustment);
} }
void mes(type) word type; void mes(type) word type;

3
mach/i80/ncg/table
View file

@ -350,12 +350,13 @@ pat lol ($1<0) && ($1>=0-STACKHELPERS)
yields de yields de
pat lol pat lol
uses dereg uses dereg, hlreg={const2, $1}
gen gen
dad lb dad lb
mov e, {m} mov e, {m}
inx hl inx hl
mov d, {m} mov d, {m}
yields de
pat loe pat loe
uses hlreg uses hlreg