[libc-commits] [libc] [libc] Include stdfix.h in baremetal targets (PR #83900)

[Petr Hosek via libc-commits]

https://github.com/petrhosek created https://github.com/llvm/llvm-project/pull/83900

Fixed-point arithmetic support is targeted towards baremetal targets.

>From bc06191d387b5c4fc606003f0a25c7428022217b Mon Sep 17 00:00:00 2001
From: Petr Hosek <phosek at google.com>
Date: Mon, 4 Mar 2024 19:43:27 +0000
Subject: [PATCH] [libc] Include stdfix.h in baremetal targets

Fixed-point arithmetic support is targeted towards baremetal targets.
---
 libc/config/baremetal/api.td                |  1 +
 libc/config/baremetal/arm/entrypoints.txt   | 31 ++++++++++++++++++++-
 libc/config/baremetal/arm/headers.txt       |  1 +
 libc/config/baremetal/riscv/entrypoints.txt | 30 ++++++++++++++++++++
 libc/config/baremetal/riscv/headers.txt     |  1 +
 5 files changed, 63 insertions(+), 1 deletion(-)

diff --git a/libc/config/baremetal/api.td b/libc/config/baremetal/api.td
index 3da83d9eb30cff..a132d8308122f7 100644
--- a/libc/config/baremetal/api.td
+++ b/libc/config/baremetal/api.td
@@ -1,6 +1,7 @@
 include "config/public_api.td"
 
 include "spec/stdc.td"
+include "spec/stdc_ext.td"
 
 def AssertMacro : MacroDef<"assert"> {
   let Defn = [{
diff --git a/libc/config/baremetal/arm/entrypoints.txt b/libc/config/baremetal/arm/entrypoints.txt
index a61d9feac2938d..c9887b6e855a6d 100644
--- a/libc/config/baremetal/arm/entrypoints.txt
+++ b/libc/config/baremetal/arm/entrypoints.txt
@@ -76,7 +76,6 @@ set(TARGET_LIBC_ENTRYPOINTS
     libc.src.stdio.vsprintf
     libc.src.stdio.vsnprintf
 
-
     # stdbit.h entrypoints
     libc.src.stdbit.stdc_leading_zeros_uc
     libc.src.stdbit.stdc_leading_zeros_us
@@ -280,6 +279,36 @@ set(TARGET_LIBM_ENTRYPOINTS
     libc.src.math.truncl
 )
 
+if(LIBC_COMPILER_HAS_FIXED_POINT)
+  list(APPEND TARGET_LIBM_ENTRYPOINTS
+    # stdfix.h _Fract and _Accum entrypoints
+    libc.src.stdfix.abshk
+    libc.src.stdfix.abshr
+    libc.src.stdfix.absk
+    libc.src.stdfix.absr
+    libc.src.stdfix.abslk
+    libc.src.stdfix.abslr
+    libc.src.stdfix.roundhk
+    libc.src.stdfix.roundhr
+    libc.src.stdfix.roundk
+    libc.src.stdfix.roundr
+    libc.src.stdfix.roundlk
+    libc.src.stdfix.roundlr
+    libc.src.stdfix.rounduhk
+    libc.src.stdfix.rounduhr
+    libc.src.stdfix.rounduk
+    libc.src.stdfix.roundur
+    libc.src.stdfix.roundulk
+    libc.src.stdfix.roundulr
+    libc.src.stdfix.sqrtuhk
+    libc.src.stdfix.sqrtuhr
+    libc.src.stdfix.sqrtuk
+    libc.src.stdfix.sqrtur
+    # libc.src.stdfix.sqrtulk
+    libc.src.stdfix.sqrtulr
+  )
+endif()
+
 set(TARGET_LLVMLIBC_ENTRYPOINTS
   ${TARGET_LIBC_ENTRYPOINTS}
   ${TARGET_LIBM_ENTRYPOINTS}
diff --git a/libc/config/baremetal/arm/headers.txt b/libc/config/baremetal/arm/headers.txt
index bc43abf47bbd01..68d7017fda8027 100644
--- a/libc/config/baremetal/arm/headers.txt
+++ b/libc/config/baremetal/arm/headers.txt
@@ -7,6 +7,7 @@ set(TARGET_PUBLIC_HEADERS
     libc.include.stdint
     libc.include.inttypes
     libc.include.math
+    libc.include.stdfix
     libc.include.stdio
     libc.include.stdlib
     libc.include.string
diff --git a/libc/config/baremetal/riscv/entrypoints.txt b/libc/config/baremetal/riscv/entrypoints.txt
index 533f9f9f368506..c9887b6e855a6d 100644
--- a/libc/config/baremetal/riscv/entrypoints.txt
+++ b/libc/config/baremetal/riscv/entrypoints.txt
@@ -279,6 +279,36 @@ set(TARGET_LIBM_ENTRYPOINTS
     libc.src.math.truncl
 )
 
+if(LIBC_COMPILER_HAS_FIXED_POINT)
+  list(APPEND TARGET_LIBM_ENTRYPOINTS
+    # stdfix.h _Fract and _Accum entrypoints
+    libc.src.stdfix.abshk
+    libc.src.stdfix.abshr
+    libc.src.stdfix.absk
+    libc.src.stdfix.absr
+    libc.src.stdfix.abslk
+    libc.src.stdfix.abslr
+    libc.src.stdfix.roundhk
+    libc.src.stdfix.roundhr
+    libc.src.stdfix.roundk
+    libc.src.stdfix.roundr
+    libc.src.stdfix.roundlk
+    libc.src.stdfix.roundlr
+    libc.src.stdfix.rounduhk
+    libc.src.stdfix.rounduhr
+    libc.src.stdfix.rounduk
+    libc.src.stdfix.roundur
+    libc.src.stdfix.roundulk
+    libc.src.stdfix.roundulr
+    libc.src.stdfix.sqrtuhk
+    libc.src.stdfix.sqrtuhr
+    libc.src.stdfix.sqrtuk
+    libc.src.stdfix.sqrtur
+    # libc.src.stdfix.sqrtulk
+    libc.src.stdfix.sqrtulr
+  )
+endif()
+
 set(TARGET_LLVMLIBC_ENTRYPOINTS
   ${TARGET_LIBC_ENTRYPOINTS}
   ${TARGET_LIBM_ENTRYPOINTS}
diff --git a/libc/config/baremetal/riscv/headers.txt b/libc/config/baremetal/riscv/headers.txt
index bc43abf47bbd01..68d7017fda8027 100644
--- a/libc/config/baremetal/riscv/headers.txt
+++ b/libc/config/baremetal/riscv/headers.txt
@@ -7,6 +7,7 @@ set(TARGET_PUBLIC_HEADERS
     libc.include.stdint
     libc.include.inttypes
     libc.include.math
+    libc.include.stdfix
     libc.include.stdio
     libc.include.stdlib
     libc.include.string