scc

Simple C99 Compiler
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commit df8e77f218a09fa630992c262d652586ac18ac95
parent e2fc11a0790f840a9f0f0ce59878f0f0a55fc52d
Author: Roberto E. Vargas Caballero <roberto.vargas@igrid-td.com>
Date:   Thu, 14 Apr 2016 08:01:55 +0200

Revert "[cc2] Remove sigil function from qbe"

This reverts commit 669131252b1f35c13e32a47e22e84026ac69d1a8.

Diffstat:
cc2/arch/qbe/code.c | 33+++++++++++++++++++++++++++++----
1 file changed, 29 insertions(+), 4 deletions(-)

diff --git a/cc2/arch/qbe/code.c b/cc2/arch/qbe/code.c @@ -6,24 +6,49 @@ #include "../../cc2.h" #include "../../../inc/sizes.h" +/* + * : is for user-defined Aggregate Types + * $ is for globals (represented by a pointer) + * % is for function-scope temporaries + * @ is for block labels + */ +static char +sigil(Symbol *sym) +{ + switch (sym->kind) { + case EXTRN: + case GLOB: + case PRIVAT: + case LOCAL: + return '$'; + case AUTO: + case REG: + return '%'; + default: + abort(); + } +} + static char * symname(Symbol *sym) { - static char name[IDENTSIZ+1]; + static char name[IDENTSIZ+2]; static unsigned short id; + char c = sigil(sym); if (sym->name) { switch (sym->kind) { case EXTRN: case GLOB: case PRIVAT: + sprintf(name, "%c%s", c, sym->name); return sym->name; } } if (sym->numid == 0 && (sym->numid = ++id) == 0) error(EIDOVER); - sprintf(name, ".L%d", sym->numid); + sprintf(name, "%c.%d", c, sym->numid); return name; } @@ -115,7 +140,7 @@ defglobal(Symbol *sym) return; if (sym->kind == GLOB) fputs("export ", stdout); - printf("data $%s = {\n", symname(sym)); + printf("data %s = {\n", symname(sym)); if (sym->type.flags & INITF) return; printf("\tz\t%llu\n}\n", (unsigned long long) sym->type.size); @@ -146,7 +171,7 @@ writeout(void) { if (curfun->kind == GLOB) fputs("export ", stdout); - printf("function $%s(", symname(curfun)); + printf("function %s(", symname(curfun)); puts("){"); puts("}"); }