Date: Fri, 16 Sep 2022 15:54:04 GMT From: Warner Losh <imp@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 9758dd3de1cd - main - stand: Allocate bootinfo rather than have it be static Message-ID: <202209161554.28GFs4aA086609@gitrepo.freebsd.org>
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The branch main has been updated by imp: URL: https://cgit.FreeBSD.org/src/commit/?id=9758dd3de1cddc8271be8dd6fee69286c5c86535 commit 9758dd3de1cddc8271be8dd6fee69286c5c86535 Author: Warner Losh <imp@FreeBSD.org> AuthorDate: 2022-09-16 15:09:41 +0000 Commit: Warner Losh <imp@FreeBSD.org> CommitDate: 2022-09-16 15:18:57 +0000 stand: Allocate bootinfo rather than have it be static This saves 80 bytes (the new bootinfo structure was 84 bytes, and a pointer is 4 bytes). The bi_load32 code is the same size. Sponsored by: Netflix Reviewed by: tsoome Differential Revision: https://reviews.freebsd.org/D36575 --- stand/i386/libi386/bootinfo32.c | 29 +++++++++++++++-------------- 1 file changed, 15 insertions(+), 14 deletions(-) diff --git a/stand/i386/libi386/bootinfo32.c b/stand/i386/libi386/bootinfo32.c index 372bced917d6..37a797289f2b 100644 --- a/stand/i386/libi386/bootinfo32.c +++ b/stand/i386/libi386/bootinfo32.c @@ -42,7 +42,7 @@ __FBSDID("$FreeBSD$"); #include "geliboot.h" #endif -static struct bootinfo bi; +static struct bootinfo *bi; /* * Load the information expected by an i386 kernel. @@ -91,11 +91,12 @@ bi_load32(char *args, int *howtop, int *bootdevp, vm_offset_t *bip, vm_offset_t /* XXX - use a default bootdev of 0. Is this ok??? */ bootdevnr = 0; + bi = calloc(sizeof(*bi), 1); switch(rootdev->dd.d_dev->dv_type) { case DEVT_CD: case DEVT_DISK: /* pass in the BIOS device number of the current disk */ - bi.bi_bios_dev = bd_unit2bios(rootdev); + bi->bi_bios_dev = bd_unit2bios(rootdev); bootdevnr = bd_getdev(rootdev); break; @@ -172,22 +173,22 @@ bi_load32(char *args, int *howtop, int *bootdevp, vm_offset_t *bip, vm_offset_t /* legacy bootinfo structure */ kernelname = getenv("kernelname"); i386_getdev(NULL, kernelname, &kernelpath); - bi.bi_version = BOOTINFO_VERSION; - bi.bi_size = sizeof(bi); - bi.bi_memsizes_valid = 1; - bi.bi_basemem = bios_basemem / 1024; - bi.bi_extmem = bios_extmem / 1024; - bi.bi_envp = envp; - bi.bi_modulep = *modulep; - bi.bi_kernend = kernend; - bi.bi_kernelname = VTOP(kernelpath); - bi.bi_symtab = ssym; /* XXX this is only the primary kernel symtab */ - bi.bi_esymtab = esym; + bi->bi_version = BOOTINFO_VERSION; + bi->bi_size = sizeof(bi); + bi->bi_memsizes_valid = 1; + bi->bi_basemem = bios_basemem / 1024; + bi->bi_extmem = bios_extmem / 1024; + bi->bi_envp = envp; + bi->bi_modulep = *modulep; + bi->bi_kernend = kernend; + bi->bi_kernelname = VTOP(kernelpath); + bi->bi_symtab = ssym; /* XXX this is only the primary kernel symtab */ + bi->bi_esymtab = esym; /* legacy boot arguments */ *howtop = howto | RB_BOOTINFO; *bootdevp = bootdevnr; - *bip = VTOP(&bi); + *bip = VTOP(bi); return(0); }
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