diff options
Diffstat (limited to 'src/cmd/dist/buildruntime.c')
| -rw-r--r-- | src/cmd/dist/buildruntime.c | 115 |
1 files changed, 101 insertions, 14 deletions
diff --git a/src/cmd/dist/buildruntime.c b/src/cmd/dist/buildruntime.c index ee867566f..e6e309d92 100644 --- a/src/cmd/dist/buildruntime.c +++ b/src/cmd/dist/buildruntime.c @@ -38,6 +38,34 @@ mkzversion(char *dir, char *file) bfree(&out); } +// mkzexperiment writes zaexperiment.h (sic): +// +// #define GOEXPERIMENT "experiment string" +// +void +mkzexperiment(char *dir, char *file) +{ + Buf b, out, exp; + + USED(dir); + + binit(&b); + binit(&out); + binit(&exp); + + xgetenv(&exp, "GOEXPERIMENT"); + bwritestr(&out, bprintf(&b, + "// auto generated by go tool dist\n" + "\n" + "#define GOEXPERIMENT \"%s\"\n", bstr(&exp))); + + writefile(&out, file, 0); + + bfree(&b); + bfree(&out); + bfree(&exp); +} + // mkzgoarch writes zgoarch_$GOARCH.go: // // package runtime @@ -162,24 +190,27 @@ static struct { "#define m(r) 8(GS)\n" "#define procid(r) 16(GS)\n" }, - {"amd64", "", - "// The offsets 0 and 8 are known to:\n" - "// ../../cmd/6l/pass.c:/D_GS\n" - "// cgo/gcc_linux_amd64.c:/^threadentry\n" - "// cgo/gcc_darwin_amd64.c:/^threadentry\n" - "//\n" - "#define get_tls(r)\n" - "#define g(r) 0(GS)\n" - "#define m(r) 8(GS)\n" + // The TLS accessors here are defined here to use initial exec model. + // If the linker is not outputting a shared library, it will reduce + // the TLS accessors to the local exec model, effectively removing + // get_tls(). + {"amd64", "linux", + "#define get_tls(r) MOVQ runtime·tlsgm(SB), r\n" + "#define g(r) 0(r)(GS*1)\n" + "#define m(r) 8(r)(GS*1)\n" }, - + {"amd64", "", + "#define get_tls(r)\n" + "#define g(r) 0(GS)\n" + "#define m(r) 8(GS)\n" + }, {"arm", "", - "#define g R10\n" - "#define m R9\n" "#define LR R14\n" }, }; +#define MAXWINCB 2000 /* maximum number of windows callbacks allowed */ + // mkzasm writes zasm_$GOOS_$GOARCH.h, // which contains struct offsets for use by // assembly files. It also writes a copy to the work space @@ -190,12 +221,13 @@ mkzasm(char *dir, char *file) { int i, n; char *aggr, *p; - Buf in, b, out; + Buf in, b, out, exp; Vec argv, lines, fields; binit(&in); binit(&b); binit(&out); + binit(&exp); vinit(&argv); vinit(&lines); vinit(&fields); @@ -234,10 +266,11 @@ ok: // Gobuf 24 sched; // 'Y' 48 stack0; // } + // StackMin = 128; // into output like // #define g_sched 24 // #define g_stack0 48 - // + // #define const_StackMin 128 aggr = nil; splitlines(&lines, bstr(&in)); for(i=0; i<lines.len; i++) { @@ -247,10 +280,14 @@ ok: aggr = "g"; else if(streq(fields.p[1], "M")) aggr = "m"; + else if(streq(fields.p[1], "P")) + aggr = "p"; else if(streq(fields.p[1], "Gobuf")) aggr = "gobuf"; else if(streq(fields.p[1], "WinCall")) aggr = "wincall"; + else if(streq(fields.p[1], "WinCallbackContext")) + aggr = "cbctxt"; else if(streq(fields.p[1], "SEH")) aggr = "seh"; } @@ -263,8 +300,22 @@ ok: p[xstrlen(p)-1] = '\0'; bwritestr(&out, bprintf(&b, "#define %s_%s %s\n", aggr, fields.p[n-1], fields.p[n-2])); } + if(fields.len == 3 && streq(fields.p[1], "=")) { // generated from enumerated constants + p = fields.p[2]; + if(p[xstrlen(p)-1] == ';') + p[xstrlen(p)-1] = '\0'; + bwritestr(&out, bprintf(&b, "#define const_%s %s\n", fields.p[0], p)); + } + } + + // Some #defines that are used for .c files. + if(streq(goos, "windows")) { + bwritestr(&out, bprintf(&b, "#define cb_max %d\n", MAXWINCB)); } + xgetenv(&exp, "GOEXPERIMENT"); + bwritestr(&out, bprintf(&b, "#define GOEXPERIMENT \"%s\"\n", bstr(&exp))); + // Write both to file and to workdir/zasm_GOOS_GOARCH.h. writefile(&out, file, 0); writefile(&out, bprintf(&b, "%s/zasm_GOOS_GOARCH.h", workdir), 0); @@ -272,11 +323,47 @@ ok: bfree(&in); bfree(&b); bfree(&out); + bfree(&exp); vfree(&argv); vfree(&lines); vfree(&fields); } +// mkzsys writes zsys_$GOOS_$GOARCH.h, +// which contains arch or os specific asm code. +// +void +mkzsys(char *dir, char *file) +{ + int i; + Buf out; + + USED(dir); + + binit(&out); + + bwritestr(&out, "// auto generated by go tool dist\n\n"); + if(streq(goos, "windows")) { + bwritef(&out, + "// runtime·callbackasm is called by external code to\n" + "// execute Go implemented callback function. It is not\n" + "// called from the start, instead runtime·compilecallback\n" + "// always returns address into runtime·callbackasm offset\n" + "// appropriately so different callbacks start with different\n" + "// CALL instruction in runtime·callbackasm. This determines\n" + "// which Go callback function is executed later on.\n" + "TEXT runtime·callbackasm(SB),7,$0\n"); + for(i=0; i<MAXWINCB; i++) { + bwritef(&out, "\tCALL\truntime·callbackasm1(SB)\n"); + } + bwritef(&out, "\tRET\n"); + } + + writefile(&out, file, 0); + + bfree(&out); +} + static char *runtimedefs[] = { "proc.c", "iface.c", |